1966 Avanti II Performance Engines

Keep Your 1966 Avanti II in Top Shape with Quality Performance Engines

Whether you’re repairing or upgrading your Performance Engine, using high-quality parts is key to keeping your 1966 Avanti II looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Oil Pan Gaskets, Performance Engine Cylinder Head Gaskets, and Performance Engine Main Bearing Gasket Sets. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Performance Engines from Trusted Brands

Looking for a reliable Performance Engine? We’ve got you covered with options from brands you know and trust like FEL-PRO Performance, Edelbrock, and Competition Cams. For example, FEL-PRO Performance Performance Engines start at just $31.99 with an average 4.2 star rating. Edelbrock and Competition Cams offer similar pricing and quality, backed by strong customer feedback. With over 33 reviews and a solid 5 star average, you can shop with confidence knowing other Avanti II owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1966 Avanti II Performance Engine at Advance Auto Parts is around $430.08, with a range that starts at $21.99 and goes up to $1,645.99. With 40 options in stock from 4 trusted brands, finding the right fit is easy. Popular picks like Performer EPS Intake Manifold for 1955-86 Small-Block Chevy, Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts, and Cylinder Head Gasket: Steel Core Composite, Without Head Bolts start at just $42.49 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Performance Engine, don’t forget to check out other key components like Performance Exhaust Products and Performance Fuel Systems. At Advance Auto Parts, we’re here to help you keep your 1966 Avanti II in peak condition, inside and out.

Essential 1966 Avanti II Performance Engines

Competition Cams – XFI XE-R 238/240 Hydraulic Roller Cam (Part No.54-448-11)

XFI XE-R 238/240 Hydraulic Roller Cam

from

$541.99
Designed to take advantage of the GM LS engine’s larger camshaft journal diameter, the XFI RPM camshaft line takes Xtreme Energy technology to deliver excellent power.

Product Features:
  • Designed with Xtreme Energy technology to provide excellent power with the LS engine’s enhanced cylinder head design and high RPM potential.
  • Takes advantage of the LS engine’s larger journal diameter, base circle and 1.7+ rocker arm ratio.
  • Provides outstanding low RPM torque with increased stability.
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Competition Cams – Big Mutha’ Thumpr 243/257 Hydraulic Roller Cam (Part No.12-602-8)

Big Mutha' Thumpr 243/257 Hydraulic Roller Cam

from

$549.99
Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods.

Product Features:
  • Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note.
  • Best with aftermarket converters and more rear gear.
  • Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods.
See More

Edelbrock – Performer Intake Manifold for 1987-95 Small Block Chevy, Satin Finish (Part No.2104)

Performer Intake Manifold for 1987-95 Small Block Chevy, Satin Finish

from

$346.99


Product Features:
  • For Idle to 5500 RPM Street-Driven Performance
  • Dual-Plane Low-Rise Intake w/180 Deg Firing Order
  • Patented Runner Design Ensures Broad Torque Curve
  • Excellent Throttle Response and Mid-Range Power
  • 50-State Street Legal if Correct Carburetor Used
  • Accepts Late-Model Choke; Waterneck; and HEI
  • Accepts A/C And Alternator
  • Accepts Exhaust Heated Chokes
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Edelbrock – Performer RPM AIR-Gap Small Block Chevy Black Intake Manifold (Part No.75013)

Performer RPM AIR-Gap Small Block Chevy Black Intake Manifold

from

$552.99
Edelbrock part #75013 RPM Air-Gap RPM intake manifold is designed for 1955-86 262-400 c.i.d. Chevrolet V8’s. The award-winning RPM Air-Gap intake manifold incorporates the same race-winning technology that’s used on our Victor Series competition intakes.

Product Features:
  • 1500-6500 RPM Range
  • Dual Plane Type-4150 Style Flange
  • 4.2 in. Front Height, 4.72 in. Center Height, 5.25 in. Rear Height
  • Black Powder Coated Finish
  • Non-EGR
See More

FEL-PRO Performance – Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts (Part No.1003)

Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts

from

$42.49
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
  • NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
  • SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
  • STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
  • DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
See More

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1004)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

from

$44.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Fel-Pro Performance head gaskets accommodate the high cylinder pressures and cylinder head movement associated with performance engines.
  • Inserted within a stainless steel armor surrounding each cylinder, wire ring design provides highly concentrated sealing around the combustion chamber.
  • Raises combustion sealing force to roughly three times that of standard head gaskets.
  • Steel wire rings for the greatest combustion seal strength.
  • Not intended for use in emission controlled vehicles.
See More

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1010)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

from

$51.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
  • NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
  • SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
  • STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
  • DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
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Edelbrock – Sure Seat Valve Springs for Chevy 262-400 V8 1957-95 (Part No.5802)

Sure Seat Valve Springs for Chevy 262-400 V8 1957-95

from

$64.99
Springs made of highest quality spring wire. Springs precision wound to close tolerances. Non-Rotator style: Dyno tested and street proven. Great match to Edelbrock camshaft kit.

Product Features:
  • For Use With Cast Iron Heads
  • Springs Made of Highest Quality Spring Wire
  • Springs Precision Wound To Close Tolerances
  • Use with Original Equipment Heads Only
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Edelbrock – Sure Seat Valve Springs for S/B Chevy O.E Cast iron Cylinder Heads (Part No.5703)

Sure Seat Valve Springs for S/B Chevy O.E Cast iron Cylinder Heads

from

$69.99
Springs made of highest quality spring wire. Springs precision wound to close tolerances. Non-Rotator style: Dyno tested and street proven. Great match to Edelbrock camshaft kit.

Product Features:
  • For Use With Cast Iron Heads
  • Springs Made of Highest Quality Spring Wire
  • Springs Precision Wound To Close Tolerances
  • Use with Original Equipment Heads Only
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Competition Cams – VALVE SPRING KIT, FOR LS 1.310" BEEHIVE 1 KT (Part No.26918CS-KIT)

VALVE SPRING KIT, FOR LS 1.310" BEEHIVE 1 KT

from

$528.99
This Beehive Valve Spring Kit for LS engines is designed for hydraulic roller cams and includes carefully matched Beehive Springs, steel retainers, locks, seals and spring seats. With a .625″ maximum lift, these Beehive Valve Springs deliver increased valve train stability and a much lighter valve train. This is achieved with less spring pressure for better valve control and reduced weight of both the spring and retainer. The unique Beehive shape handles valve train stress more efficiently to eliminate damaging harmonics and increases high RPM horsepower and durability. The oval/multi-arc wire shape places the maximum area of the wire at the point of highest stress to handle valve train stress more efficiently and allow better heat dissipation for longer life.Kit Includes:26918-16 Beehive Valve Springs774-16 Steel Retainers623-16 7° Steel Valve Locks511-16 Valve Seals4705-16 Spring Seats

Product Features:
  • Kit includes part #26918-16 Beehive valve springs and matching steel retainers, 7° valve locks, valve seals and spring seats
  • Kits designed for hydraulic roller cams
  • .625″ maximum lift springs
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B & M – Holeshot 2400 (Part No.20412)

Holeshot 2400

from

$549.99
HoleShot 2400 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) Application: HoleShot 2400 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) A higher than stock stall speed as delivered by the Holeshot c

Product Features:
  • Furnace Brazed Impeller
  • Steel Alloy Pump Drive Tube
  • Heavy Duty Needle Bearing
  • Between Stator and Turbine
  • Furnace Brazed Turbine
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B & M – Holeshot 3000 (Part No.20413)

Holeshot 3000

from

$899.99
HoleShot 3000 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) APPLICATION: HoleShot 3000 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) A higher than stock stall speed as delivered by the Holeshot c

Product Features:
  • Furnace Brazed Impeller
  • Steel Alloy Pump Drive Tube
  • Heavy Duty Needle Bearing
  • Between Stator and Turbine
  • Furnace Brazed Turbine
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B & M – Holeshot 3600 (Part No.20425)

Holeshot 3600

from

$949.99
HoleShot 3600 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) APPLICATION: HoleShot 3600 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) A higher than stock stall speed as delivered by the Holeshot converter will provide several advantages and benefits in vehicles with modified engines. Many modifications, particularly big cams, tend to reduce low end power and torque. The high stall converter allows the engine to launch the car at higher rpm where more torque is available. The Holeshot is generally a very good choice for the typical street machine that is looking for better launch capability and more strength. Street rods with modified engines will also benefit from a Holeshot converter. If your vehicle is equipped with a plate type nitrous system, you will need a Nitrous Holeshot!! Stall speed listings are based on engines producing 230lb. ft. of torque at 2,500 rpm. More torque at 2,500 rpm will give you more stall speed, less torque at 2,500 rpm will give you less stall speed than the stall speed ratings indicated. Furnace brazed impeller. New precision steel alloy pump drive tube. New heavy duty needle bearing between stator and impeller (not a thrust washer). Needle bearing between stator and turbine. Furnace brazed turbine. Dual pattern drive lugs on some GM Holeshots. New turbine hub. New springs and rollers in stator.

Product Features:
  • Furnace Brazed Impeller
  • Steel Alloy Pump Drive Tube
  • Heavy Duty Needle Bearing
  • Between Stator and Turbine
  • Furnace Brazed Turbine
  • Dual Pattern Drive Lugs
  • New Turbine Hub
  • New Springs/Rollers In Stator
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FEL-PRO Performance – Engine Crankshaft Seal Kit (Part No.2919)

Engine Crankshaft Seal Kit

from

$37.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Fluoroelastomer compound combines optimum resistance to heat, oils and abrasion for longivity.
  • Optimizes performance under high crankcase vacuum conditions, elevated temperatures and high RPM levels.
  • Not intended for use in emission controlled vehicles.
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FEL-PRO Performance – Engine Crankshaft Seal Kit (Part No.2912)

Engine Crankshaft Seal Kit

from

$37.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:
  • Fluoroelastomer compound combines optimum resistance to heat, oils and abrasion for longevity.
  • Optimizes performance under high crankcase vacuum conditions, elevated temperatures and high RPM levels.
  • Not intended for use in emission controlled vehicles.
  • Not intended for use in emission controlled vehicles.
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FEL-PRO Performance – Oil Pan Gasket Set: High-Temperature Rubber-Coated Fiber, 5 Piece Set (Part No.1802)

Oil Pan Gasket Set: High-Temperature Rubber-Coated Fiber, 5 Piece Set

from

$25.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Felcoid/Plus gaskets have a fiber sheet core and a latex rubber coating to eliminate potential leakage paths. The core material resists crushing and splitting, while providing excellent blowout resistance.
  • With steel core to provide ultimate excellent blowout resistance.
  • Not intended for use in emission controlled vehicles.
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FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1818)

PERFORMANCE OIL PAN GASKET SET

from

$27.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Felcoid/Plus gaskets have a fiber sheet core and a latex rubber coating to eliminate potential leakage paths. The core material resists crushing and splitting, while providing excellent blowout resistance.
  • With steel core to provide ultimate excellent blowout resistance.
  • Not intended for use in emission controlled vehicles.
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FEL-PRO Performance – Oil Pan Gasket Set: High-Temperature Rubber-Coated Fiber, 5 Piece Set (Part No.1803)

Oil Pan Gasket Set: High-Temperature Rubber-Coated Fiber, 5 Piece Set

from

$26.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Felcoid/Plus gaskets have a fiber sheet core and a latex rubber coating to eliminate potential leakage paths. The core material resists crushing and splitting, while providing excellent blowout resistance.
  • With steel core to provide ultimate excellent blowout resistance.
  • Not intended for use in emission controlled vehicles.
See More

FEL-PRO Performance – Engine Timing Cover Gasket (Part No.2335)

Engine Timing Cover Gasket

from

$21.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Steel core gasket construction
  • Exclusive design permits significantly faster gasket installation while eliminating potential sealing leak paths.
  • Not intended for use in emission controlled vehicles.
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Competition Cams – High Energy 206/206 Hydraulic Flat Cam K-Kit (Part No.K12-205-2)

High Energy 206/206 Hydraulic Flat Cam K-Kit

from

$1201.99
Ideal for use with mainly stock components like rocker arms, intake manifolds, cylinder heads, compression ratio, torque converters and rear gear ratios, the High Energy camshaft grind family is a great choice for street performance applications.

Product Features:
  • Good blend of efficiency and performance.
  • Perfect choice for performance street rebuilds.
  • Work well with mainly stock components such as rockers, manifolds, heads, compression, torque converters and gears.
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Edelbrock – Performer-Plus Camshaft Kit for 1957-86 Small-Block Chevrolet (Part No.2102)

Performer-Plus Camshaft Kit for 1957-86 Small-Block Chevrolet

from

$302.99
Product Features:
  • Designed for Optimum Torque and Acceleration
  • Maximum Performance From Idle through Mid-Range
  • Matched to Edelbrock Performer Intakes
  • Includes Hydraulic Lifters and Assembly Lube
  • Major Improvement in Throttle Response and Torque
  • Use For Daily Drivers/Trucks/Vans/RVs/4x4s
  • Take The Guesswork Out Of Camshaft Selection
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Competition Cams – Mutha’ Thumpr 235/249 Hydraulic Roller Cam and Lifter Kit (Part No.CL12-601-8)

Mutha' Thumpr 235/249 Hydraulic Roller Cam and Lifter Kit

from

$1152.99
Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods.

Product Features:
  • Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note.
  • Best with aftermarket converters and more rear gear.
  • Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods.
See More

Competition Cams – Big Mutha’ Thumpr 243/257 Hydraulic Roller Cam/Lifter Kit (Part No.CL12-602-8)

Big Mutha' Thumpr 243/257 Hydraulic Roller Cam/Lifter Kit

from

$1152.99
Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods.

Product Features:
  • Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note.
  • Best with aftermarket converters and more rear gear.
  • Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods.
See More

FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1603)

Engine Valve Cover Gasket Set

from

$31.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Blue Stripe performance cork-rubber gaskets use cork particles evenly distributed throughout a rubber binder resulting in a compressible gasket without leak paths.
  • Not intended for use in emission controlled vehicles.
See More

FEL-PRO Performance – PERFORMANCE VALVE COVER GASKET SET (Part No.1602)

PERFORMANCE VALVE COVER GASKET SET

from

$23.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Die cut silicone rubber gaskets conform to out-of-flat covers
  • Great for on-again/off-again situations
  • Not intended for use in emission controlled vehicles.
See More

Most Popular Performance Engine Oil Pan Gasket for 1966 Avanti IIs

Enhance your 1966 Avanti II with this popular Performance Engine Oil Pan Gasket we have in stock, for $25.99.

FEL-PRO Performance – Oil Pan Gasket Set: High-Temperature Rubber-Coated Fiber, 5 Piece Set (Part No.1802)

Oil Pan Gasket Set: High-Temperature Rubber-Coated Fiber, 5 Piece Set

from

$25.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Felcoid/Plus gaskets have a fiber sheet core and a latex rubber coating to eliminate potential leakage paths. The core material resists crushing and splitting, while providing excellent blowout resistance.
  • With steel core to provide ultimate excellent blowout resistance.
  • Not intended for use in emission controlled vehicles.
See More

Best-Selling 1966 Avanti II Performance Engine Cylinder Head Gaskets

Upgrade your II with one of our 4 best-selling Performance Engine Cylinder Head Gaskets, earning an average 5 stars rating across 2 reviews.

FEL-PRO Performance – Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts (Part No.1003)

Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts

from

$42.49
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
  • NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
  • SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
  • STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
  • DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
See More

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1004)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

from

$44.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Fel-Pro Performance head gaskets accommodate the high cylinder pressures and cylinder head movement associated with performance engines.
  • Inserted within a stainless steel armor surrounding each cylinder, wire ring design provides highly concentrated sealing around the combustion chamber.
  • Raises combustion sealing force to roughly three times that of standard head gaskets.
  • Steel wire rings for the greatest combustion seal strength.
  • Not intended for use in emission controlled vehicles.
See More

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1010)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

from

$51.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
  • NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
  • SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
  • STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
  • DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
See More

Edelbrock – Cylinder Head Gasket Set for Chevrolet (Part No.7310)

Cylinder Head Gasket Set for Chevrolet

from

$61.99
Product Features:
  • 4.125 in. Cylinder Bore Diameter
  • 0.039 in. Thickness
  • 8.7cc Volume
  • Charcoal Color
  • Two Piece Configuration
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Top-Quality Performance Engine Main Bearing Gasket Sets for 1966 Avanti IIs

Choose a high-quality OEM or aftermarket Performance Engine Main Bearing Gasket Set for Avanti IIs and enjoy top-notch performance from $37.99.

FEL-PRO Performance – Engine Crankshaft Seal Kit (Part No.2912)

Engine Crankshaft Seal Kit

from

$37.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:
  • Fluoroelastomer compound combines optimum resistance to heat, oils and abrasion for longevity.
  • Optimizes performance under high crankcase vacuum conditions, elevated temperatures and high RPM levels.
  • Not intended for use in emission controlled vehicles.
  • Not intended for use in emission controlled vehicles.
See More

Top Picks for 1966 Avanti II Performance Engine Valve Cover Gasket Sets

Invest in one of our 2 durable Performance Engine Valve Cover Gasket Sets for your 1966 Avanti, knowing you’re getting trusted brands and expert craftsmanship.

FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1603)

Engine Valve Cover Gasket Set

from

$31.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Blue Stripe performance cork-rubber gaskets use cork particles evenly distributed throughout a rubber binder resulting in a compressible gasket without leak paths.
  • Not intended for use in emission controlled vehicles.
See More

FEL-PRO Performance – PERFORMANCE VALVE COVER GASKET SET (Part No.1602)

PERFORMANCE VALVE COVER GASKET SET

from

$23.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Die cut silicone rubber gaskets conform to out-of-flat covers
  • Great for on-again/off-again situations
  • Not intended for use in emission controlled vehicles.
See More

Top-Rated Performance Intake Manifolds for 1966 Avanti IIs

Make a smart move for your 1966 Avanti II with products all priced from $195.99 to $552.99.

Edelbrock – Performer EPS Intake Manifold for 1955-86 Small-Block Chevy (Part No.2701)

Performer EPS Intake Manifold for 1955-86 Small-Block Chevy

from

$195.99
Edelbrock part No. 2701 Performer EPS intake manifold is designed for 1986 and earlier 262-400 cubic-inch Chevys. Edelbrock’s Patented Dual-plane, low-rise design with a 180-degree firing order greatly improves torque over a wide rpm range for excellent throttle response. With that the Edelbrock Performer EPS intake manifold has a runner design that’s “tuned” for peak torque at 3500 rpm on a 350-inch engine making it ideal for power from off-idle to 5500 rpm. Dyno tests showed gains of 5 hp and 9 ft-lbs. of torque over the Edelbrock Performer manifold No. 2101 on a 350 Chevy. From 3000 to 4500 rpm, the power increases averaged 5+ ft-lbs. of torque for more performance where you need it most. PLEASE NOTE: Will not fit under stock Corvette hood!

Product Features:
  • Maximizes Performance with Edelbrock Carburetors
  • Runners Tuned to Match Square Bore Carburetor
  • Maximizes Peak Torque Around 3500 RPM
  • Excellent Throttle Response and Mid-Range Power
  • For Idle to 5500 RPM Street-Driven Performance
  • Dual-Plane Low-Rise Intake w/180 deg. Firing Order
  • Prod. +5 HP and +9 ft/lbs. of Torque Over PN[2101]
  • PLEASE NOTE: Will not fit under stock Corvette hood!
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Edelbrock – Torker II Intake Manifold Small-Block Chevy (Part No.5001)

Torker II Intake Manifold Small-Block Chevy

from

$281.99
2500-6500 RPM high-performance street engines. Single-plane low-rise intake good for high RPM. Ideal for applications with limited hood clearance. For top-end HP and adequate throttle response. Not for mileage or emissions applications. For trucks or vans use PN(2701) instead. Not for LT1 or Chevy bowtie heads. Not for 1987 and later stock aluminum heads. Available in cast or polished.

Product Features:
  • 2500 to 6500 RPM High Performance Street Engines
  • Single-Plane Low-Rise Intake Good for High RPM
  • Ideal for Applications with Limited Hood Clearance
  • For Top-End HP and Adequate Throttle Response
  • Not for Mileage or Emissions Applications
  • For Trucks or Vans Use PN[2701] Instead
  • Not for LT1 or Chevy Bowtie Heads
  • Not for 1987 and Later Stock Aluminum Heads
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Edelbrock – Performer EPS Intake Manifold w/ Oil Fill Tube for 1955-86 Small-Block Chevy (Part No.2703)

Performer EPS Intake Manifold w/ Oil Fill Tube for 1955-86 Small-Block Chevy

from

$339.99
Edelbrock part #2703 Performer EPS intake manifold is designed for 1986 and earlier 262-400 cubic-inch Chevys. Edelbrock’s Patented Dual-plane, low-rise design with a 180-degree firing order greatly improves torque over a wide rpm range for excellent thro

Product Features:
  • Idle-5500 RPM Range
  • Dual Plane Type-4150 Style Flange
  • 3.74 in. Front Height, 4.27 in. Center Height, 4.8 in. Rear Height
  • Satin Finish
  • Non-EGR W/ Oil Fill Tube
See More

Edelbrock – Performer RPM AIR-Gap Small Block Chevy Black Intake Manifold (Part No.75013)

Performer RPM AIR-Gap Small Block Chevy Black Intake Manifold

from

$552.99
Edelbrock part #75013 RPM Air-Gap RPM intake manifold is designed for 1955-86 262-400 c.i.d. Chevrolet V8’s. The award-winning RPM Air-Gap intake manifold incorporates the same race-winning technology that’s used on our Victor Series competition intakes.

Product Features:
  • 1500-6500 RPM Range
  • Dual Plane Type-4150 Style Flange
  • 4.2 in. Front Height, 4.72 in. Center Height, 5.25 in. Rear Height
  • Black Powder Coated Finish
  • Non-EGR
See More

Top-Rated Performance Engine Brands For Your 1966 Avanti II

When it comes to finding the perfect Performance Engine for your 1966 Avanti II, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 4 trusted brands. We carry the most popular Performance Engine brands including Edelbrock, FEL-PRO Performance, and Competition Cams, and more, all known for their exceptional customer ratings (average brand rating of 4.4 stars) and competitive prices, as low as $31.99. Purchasing a Performance Engine from us here at Advance Auto Parts is a smart move for both you and your 1966 Avanti II, providing peace of mind with parts that meet or exceed OEM standards.

Popular Edelbrock 1966 Avanti II Performance Engines

If you’re looking for a top-quality Performance Engine for your 1966 Avanti II, Advance Auto Parts has exactly what you need with our selection of Edelbrock Performance Engines. We have 3 Edelbrock Performance Engines in stock for this fitment, all known for their durability and precision fit. With prices starting at just $64.99 and an average cost of $140.32, you’ll find the perfect Performance Engine for your needs and budget. Edelbrock Performance Engines for the 1966 Avanti II come highly rated, with over 10 customer reviews and an impressive average rating of 4.4 stars. Choosing a Edelbrock Performance Engine from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Performer EPS Intake Manifold for 1955-86 Small-Block Chevy
from $195.99
(7)
Performer EPS Intake Manifold for 1955-86 Small-Block Chevy
“Removed a Weiand Stealth manifold and replaced with the Edelbrock, while doing a dyno test – increased HP & Torque on a modified 350, very good for st”
Complete Sure Seat Valve Spring Kit for Chevy 262-400 V8 1957-95
from $159.99
(1)
Complete Sure Seat Valve Spring Kit for Chevy 262-400 V8 1957-95
“Excellent product.”
Sure Seat Valve Springs for Chevy 262-400 V8 1957-95
from $64.99
(2)
Sure Seat Valve Springs for Chevy 262-400 V8 1957-95
“Used with the smallest Comp Thumpr Cam, good to 5500 RPM, Cost is great, No valve float. I would use again with a samll to medium cam and 416 heads.”

Top-Quality FEL-PRO Performance 1966 Avanti II Performance Engines

For those in search of a high-quality Performance Engine for their 1966 Avanti II, Advance Auto Parts offers a great selection of FEL-PRO Performance Performance Engines. With 3 FEL-PRO Performance Performance Engines in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Performance Engines start at just $31.99, with an average price of $39.82, giving you a range of options to suit your budget. Backed by over 3 customer ratings and an average rating of 4.2 stars, FEL-PRO Performance Performance Engines provide both reliability and excellent performance. Choosing a FEL-PRO Performance Performance Engine from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts
from $42.49
(1)
Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts
“Real good products”
Engine Valve Cover Gasket Set
from $31.99
(1)
Engine Valve Cover Gasket Set
“Perfect fit”
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
from $44.99
(1)
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
“Racing application”

FAQs for 1966 Avanti II Performance Engines

What are the best-selling Performance Engines for 1966 Avanti IIs?

Out of 40 Performance Engines that fit 1966 Avanti IIs, the following parts are the top sellers:

What’s the price range for 1966 Avanti II Performance Engines?

The prices of Performance Engines for the 1966 Avanti II range from $21.99 up to $1,645.99 for the most premium parts.

What is the average price of a Performance Engine for a 1966 Avanti II?

The average price for Performance Engines for the 1966 Avanti II is $430.08. Keep in mind the variety of part types within our Performance Engine category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Performance Engines for other Avanti II model years?

Yes, we carry Performance Engines for 28 model years of Avanti IIs between 1965 and 2004. The following model years are the most popular for Performance Engine purchases: 2004, 2003, 2002, 2001, 1991, 1990, 1989, 1988, and 1987.

What are the cheapest Performance Engines for my 1966 Avanti II?

The cheapest 1966 Avanti II Performance Engines we carry are:

What are the top-rated Performance Engines that fit the 1966 Avanti II?

Based on 33 reviews by customers, our 1966 Avanti II Performance Engines have an average customer rating of 5 stars. These are the highest-rated categories of Performance Engines for the 1966 Avanti II and their top-rated products:

What types of Performance Engines do you sell for my 1966 Avanti II?

As of 11/2/25, these are some of the most in-demand types of Performance Engines for a 1966 Avanti II:

Can I get help with 1966 Avanti II Performance Engine orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Avanti Performance Engines and more.

What is your return policy for Avanti II Performance Engines?

Advance Auto Parts keeps returns simple. For new Avanti II Performance Engines and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.