1978 Mercury Cougar Performance Engines

Essential 1978 Mercury Cougar Performance Engines

Spectre – Water Neck; Ford 390-428 (Part No.4736)

Water Neck; Ford 390-428

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$47.99
Spectre’s Ford water neck fits Ford 390, 427 and 428 engines. This water neck has been designed around the OEM specifications and has a chrome plated finish for a lasting look that fits great. This water neck includes bolts.

Product Features:
  • Fits Ford 390, 427 and 428 engines
  • Includes bolts and gasket
  • Chrome plated
  • Easy to install
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FEL-PRO Performance – Lower Intake Manifold Gasket Set: 7 Piece Set (Part No.1240)

Lower Intake Manifold Gasket Set: 7 Piece Set

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$39.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Fel-Pro performance intake manifold gaskets have been tested with virtually all aftermarket cylinder head and intake manifold combinations.
  • Performance intake manifold gaskets designed without a metal core, to allow engine builders to trim the gasket for exact fit on modified ports.
  • 1970-82; w/2 Bbl. Cylinder heads
  • Printoseal elastomeric sealing beads to provide extra sealing strength around the intake port.
  • Not intended for use in emission controlled vehicles.
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Edelbrock – TIMING CHAIN (Part No.7844)

TIMING CHAIN

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$29.99
Product Features:
  • Timing Chain Only
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Edelbrock – Performer-Plus camshaft for Small-Block Ford 351W V-8 applications (Part No.2182)

Performer-Plus camshaft for Small-Block Ford 351W V-8 applications

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$339.99


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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Mr. Gasket – Ultra Seal: Harmonic Balancer Bolt/Washer Kit (Part No.7847)

Ultra Seal: Harmonic Balancer Bolt/Washer Kit

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$38.49
Mr. Gasket Harmonic Balancer Bolt for Ford V8 except 351C. Fits 221,260,289,302,351W small block Windsor engines, 332,352,360,390,406,410,427,428 FEs, and 429,460 385 series big blocks. 5/8-18 x 2 inch long heat treated black oxide coated Grade 8 alloy steel with a thick parallel ground washer to provide accurate, uniform torque.

Product Features:
  • Heat treated black oxide coated Grade 8 alloy steel
  • Thick parallel ground washer provides more accurate, uniform torque
  • Hex Prevents Socket Slippage
  • Accurate And Uniform Torque
  • Black Plated Finish
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Edelbrock – Performer 289 Intake Manifold for Small-Block Ford (Part No.2121)

Performer 289 Intake Manifold for Small-Block Ford

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$299.99


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
  • Available in Multiple Finishes
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Edelbrock – Valve Cover Gasket Set for Ford (Part No.7563)

Valve Cover Gasket Set for Ford

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$60.99
Product Features:
  • Valve Cover Gasket
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B & M – Torque Converter, Tork Master 2000 (Part No.40427)

Torque Converter, Tork Master 2000

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$349.99
A higher than stock stall speed as delivered by a B&M Converter will provide several advantages. The high stall converter allows the engine to launch the car at a higher RPM where more torque is available and increased strength.

Product Features:
  • New Precision Pump Drive Tube
  • Pressure Tested
  • Fully Balanced
  • Needle Thrust Bearing
  • New Thrust Washer
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Edelbrock – Front Timing Cover Gasket Set #6991 For Small-Block Ford, With Front Seal (Part No.6991)

Front Timing Cover Gasket Set #6991 For Small-Block Ford, With Front Seal

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$28.99
Available in kits including front cover gasket, crankshaft seal, fuel pump and water pump gasket or including cover gasket and front seal.

Product Features:
  • Timing Cover Gasket And Oil Seal Kit
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Competition Cams – Xtreme Energy 218/224 Hydraulic Flat Cam for Ford 221-302 (Part No.31-238-3)

Xtreme Energy 218/224 Hydraulic Flat Cam for Ford 221-302

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$257.99
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts,

Product Features:
  • Excellent performance in street carbureted applications.
  • More vacuum allows an increase in duration for improved performance and assists power brakes.
  • Quicker opening lobe profiles deliver increased responsiveness and more area under the lift curve.
  • Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.
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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

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$592.99
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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Competition Cams – VALVE SPRINGS, 1.509" DUAL 1 ST (Part No.924-16)

VALVE SPRINGS, 1.509" DUAL 1 ST

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$788.99
Dual Valve Springs from COMP Cams are manufactured from Super Clean wire and subject to extensive quality control testing to deliver a valve spring assembly with superior strength, durability and valve train stability, no matter what the application. The dual spring design creates a stronger valve spring that can easily handle the increased lift found in extreme stress applications. COMP Cams Dual Valve Springs exceed the expectations of today’s engine builders and racers.

Product Features:
  • Seat pressure: 112 lbs. @ 1.900″, Open Pressure: 355 lbs. @ 1.200″
  • O.D.: 1.509″, I.D.: 0.697″
  • Dual valve springs with damper
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FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1035)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

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$82.99
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.
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FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1011-2)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

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$52.99
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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Competition Cams – ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST (Part No.17043-16)

ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST

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$237.99
The COMP Cams High Energy Die-Cast Aluminum Roller Rocker Arms are new rocker arms from the valve train leader that have been designed for street and moderate race use. They feature a die-cast body created from aluminum with a needle bearing fulcrum and roller tip. The die-cast, larger than stock body offers the strength properties and light weight of aluminum while the specially engineered fulcrum and roller tip decrease friction and lower oil temperatures, thus improving response and horsepower.

Product Features:
  • Cost effective aluminum construction provides superior strength to weight ratio
  • Needle bearing fulcrum and roller tip reduce friction and lower oil temperatures for improved response and horsepower
  • Durable design increases valve lift while withstanding the rigors of moderate race use
  • Die-formed aluminum body is larger than stock, and may require modifications to stock valve covers for clearance.
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Mr. Gasket – Ultra Seal: Sure-Lock Rocker Arm Nuts (Part No.923G)

Ultra Seal: Sure-Lock Rocker Arm Nuts

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$87.19
Designed to keep the rocker arms positively locked for precise and critical valve train adjustments. Manufactured from quality grade steel, then heat-treated for extra strength and plated with a durable finish. Kits include 16 rocker arm nuts with socket head set screws and one hex key wrench.

Product Features:
  • (16) Rocker Arm Nuts w/ Locks 3/8″-24 Threads
  • Shank O.D. .540″
  • Includes Locks and Hex Wrench
  • High-Quality Grade Steel
  • Heat-Treated For Ex Strength
  • Plated With Durable Gold Tone Finish
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Edelbrock – Pushrod Set for Ford 289-302 (Part No.9655)

Pushrod Set for Ford 289-302

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$208.99
Edelbrock part #9655 Pushrods are designed for small-block Ford 289-302 V-8 engine applications. These one-piece pushrods are manufactured from high quality 4130 Chromoly steel tubing that has been surface hardened for maximum durability. They have precis

Product Features:
  • 6.4 in. Length
  • 0.312 in. Diameter
  • 4130 Chromoly Steel Material
  • Black Oxide Finish
  • Made In The USA
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Edelbrock – Pushrod Set for Ford 351W (Part No.9659)

Pushrod Set for Ford 351W

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$190.99
Edelbrock part #9659 Pushrods are designed for small-block Ford 351W V-8 engine applications. These one-piece pushrods are manufactured from high quality 4130 Chromoly steel tubing that has been surface hardened for maximum durability. They have precise f

Product Features:
  • 7.7 in. Length
  • 0.312 in. Diameter
  • 4130 Chromoly Steel Material
  • Black Oxide Finish
  • Made In The USA
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Edelbrock – Water Pump Ford FE 352-428 1965-76 in Satin Finish (Part No.8805)

Water Pump Ford FE 352-428 1965-76 in Satin Finish

from

$381.99
Maximum cooling for street and racing engines. Internal passages are balanced for maximum flow. Impeller is larger than others for maximum pressure. Impeller vanes dramatically increase flow rates. Equal distribution to both sides of block. Only flows in one direction for optimum efficiency. In the early days of the automotive performance industry, you either ran what was available, or you fabricated something you thought met your needs. Such needs were the building blocks of this industry, and it was through the efforts of many that we have the automotive aftermarket, but it was through the work of one name in particular to which many in the industry owe a great debt, and that name is Edelbrock.

Product Features:
  • Maximum Cooling for Street and Racing Engines
  • Internal Passages Are Balanced for Maximum Flow
  • Impeller is Larger than Others For Max Pressure
  • Impeller Vanes Dramatically Increase Flow Rates
  • Equal Distribution to Both Sides of Block
  • Only Flows in One-Direction for Optimum Efficiency
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Edelbrock – Water Pump #8845 For Small-Block Ford 1986-93, 5.0L V8, Rev. Rotation, Polished (Part No.8845)

Water Pump #8845 For Small-Block Ford 1986-93, 5.0L V8, Rev. Rotation, Polished

from

$461.99
Maximum cooling for street and racing engines. Internal passages are balanced for maximum flow. Impeller is larger than others for maximum pressure. Impeller vanes dramatically increase flow rates. Equal distribution to both sides of block. Only flows in one direction for optimum efficiency. In the early days of the automotive performance industry, you either ran what was available, or you fabricated something you thought met your needs. Such needs were the building blocks of this industry, and it was through the efforts of many that we have the automotive aftermarket, but it was through the work of one name in particular to which many in the industry owe a great debt, and that name is Edelbrock.

Product Features:
  • Maximum Cooling for Street and Racing Engines
  • Internal Passages Are Balanced for Maximum Flow
  • Impeller is Larger than Others For Max Pressure
  • Impeller Vanes Dramatically Increase Flow Rates
  • Equal Distribution to Both Sides of Block
  • Only Flows in One-Direction for Optimum Efficiency
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Edelbrock – Performer Series Retainer (Qty 16) (Part No.9724)

Performer Series Retainer (Qty 16)

from

$100.99
Product Features:
  • Use W/ Valve Springs Part #5822, 5882, 5896, 5872, 5867, 5812, 5857
  • Set of 16
  • 1.50 in. Outside Diameter
  • Steel Material
  • Black Oxide Finish
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Mr. Gasket – Super Intake Manifold Bolts (Part No.6082)

Super Intake Manifold Bolts

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$43.99
Super Intake Manifold Bolts

Mr. Gasket – Ultra Seal: Oil Pan Gasket (Part No.6683)

Ultra Seal: Oil Pan Gasket

from

$59.19
High performance, race quality gasket with molded rubber coating over a steel core. Steel core provides rigidity and durability, preventing prevent push out while the molded rubber coating helps seal minor oil pan rail irregularities. The one piece design eliminates the need for separate end seals to make installation easier and even further reduce the possibility of oil leakage. Provides excellent sealing and durability. Excellent replacement for stock original equipment, high performance street, drag race and oval track. Includes gasket and new oil pan bolts.

Product Features:
  • Steel core provides rigidity, durability and prevents gasket push out
  • Molded rubber coating seals minor irregularities in pan surface
  • One piece design is easier to install and even less prone to leak
  • Direct replacement suitable for all uses – street, racing, heavy duty
  • Include both gasket and new oil pan bolts
  • No Cork Particles
  • Easy Removal For Disassembly
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FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1809)

PERFORMANCE OIL PAN GASKET SET

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$25.49
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.1812)

PERFORMANCE OIL PAN GASKET SET

from

$27.49
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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Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)

High Performance 180 Degree Thermostat for Increased Flow

from

$26.99
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.

Product Features:
  • Opens At 180 Degrees
  • Designed to Resist Large Variations of Coolant Pressure at High RPM
  • Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
  • For High Performance Street, Drag Race, and Oval Track
  • Copper & Brass Construction – Resists Corrosion
  • High Flow
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Mr. Gasket – High Performance Thermostat (Part No.4365)

High Performance Thermostat

from

$27.49
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.

Product Features:
  • Opens At 195 Degrees
  • Designed to Resist Large Variations of Coolant Pressure at High RPM
  • Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
  • For High Performance Street, Drag Race, and Oval Track
  • Copper & Brass Construction – Resists Corrosion
  • High Flow
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1978 Mercury Cougar Performance Engines

Maybe you’re in the middle of a full rebuild of that 1978 Mercury Cougar. Maybe you just need a couple of Performance Engines. Either way, Advance Auto Parts has 60 different Performance Engines in our inventory ranging from $19.99 to $788.99. That means you can find the exact parts or products you need to keep that 1978 Mercury Cougar running smoothly.

Performance Engines are only as good as their brand. We stock 7 different brands to make sure you have plenty of trusted parts to choose from for your 1978 Mercury Cougar. Mr. Gasket, FEL-PRO Performance, and Edelbrock are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Performance Engines for your 1978 Mercury Cougar, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 200 reviews in this category, some of the top rated parts include PERFORMANCE OIL PAN GASKET SET with 2.0 stars and Action +Plus; Intake Manifold with 3.5 stars.

So if you’re in the market for aftermarket Performance Engines to keep your 1978 Mercury Cougar rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Performance Engines Brands To Make Your 1978 Mercury Cougar Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1978 Mercury Cougar demands trusted brand parts and products to keep it running. Many trusted brands of Performance Engines make up Advance Auto Parts’ inventory, and all are ready to help make your Cougar the best it can be. Be sure to browse some of our top Performance Engines brands and parts.

Popular FEL-PRO Performance Performance Engines

We carry FEL-PRO Performance parts in our stock across Performance Engine Intake Manifold Gaskets categories, plus more. For a 1978 Mercury Cougar, our most popular FEL-PRO Performance Performance Engines include:
Lower Intake Manifold Gasket Set: 5 Piece Set
from $31.49
(1)
Lower Intake Manifold Gasket Set: 5 Piece Set
Performance Engine Intake Manifold Gaskets
Lower Intake Manifold Gasket Set: 11 Piece Set
from $33.99
(4)
Lower Intake Manifold Gasket Set: 11 Piece Set
Performance Engine Intake Manifold Gaskets
Engine Valve Cover Gasket Set
from $46.99
(1)
Engine Valve Cover Gasket Set
Performance Engine Valve Cover Gasket Sets

Top 1978 Mercury Cougar Performance Engines from Mr. Gasket

Mr. Gasket products are another trusted brand when it comes to Performance Engines for your 1978 Mercury Cougar. Popular Mr. Gasket parts include:
High Performance 180 Degree Thermostat for Increased Flow
from $26.99
(20)
High Performance 180 Degree Thermostat for Increased Flow
Performance Engine Coolant Thermostats
Water Neck
from $19.99
(12)
Water Neck
Performance Water Outlets
Intake Manifold Bolts
from $19.99
(1)
Intake Manifold Bolts
Performance Intake Manifolds

FAQs for 1978 Mercury Cougar Performance Engines

What are the most purchased Performance Engines for the 1978 Mercury Cougar?

Out of 60 Performance Engines for the 1978 Mercury Cougar, the most popular in our inventory are:
High Performance Thermostat
from $27.49
This product is not rated
High Performance Thermostat
Performance Engine Coolant Thermostats
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
from $51.99
(2)
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
Performance Engine Cylinder Head Gaskets
Water Neck
from $23.99
(2)
Water Neck
Performance Water Outlets

What are the top-rated 1978 Mercury Cougar Performance Engines?

Top-rated Performance Engines for your 1978 Mercury Cougar based on customer reviews/ratings are:
PERFORMANCE OIL PAN GASKET SET
from $25.49
(3)
PERFORMANCE OIL PAN GASKET SET
“Good product at a reasonable price. Works great.”
Action +Plus; Intake Manifold
from $349.99
(2)
Action +Plus; Intake Manifold
“Nice clean intake lookes better than edelbrock”