1968 Mercury Marquis Performance Engines

Essential 1968 Mercury Marquis Performance Engines

Edelbrock – Sure Seat Valve Springs for Ford 429/460 V8 1969-1987 (Part No.5767)

Sure Seat Valve Springs for Ford 429/460 V8 1969-1987

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$111.99
Complete kit includes retainers and locks. Springs made of highest quality spring wire. Springs precision wound to close tolerances. Includes superior quality steel retainers. Includes 7 degree heat-treated valve stem locks. Retainers and locks black oxide coated. 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 Chrysler 383-400-413-440 V8 1969-79 (Part No.5792)

Sure Seat Valve Springs for Chrysler 383-400-413-440 V8 1969-79

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$141.99
Product Features:
  • Non-Rotator Type
  • 1.550 in. Outer Diameter
  • .190 Wire Size
  • Single Coil Spring Type
  • Set of 16
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Edelbrock – Sure Seat Valve Springs for Ford 289-302 (Part No.5822)

Sure Seat Valve Springs for Ford 289-302

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$54.99
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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Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)

High Performance 180 Degree Thermostat for Increased Flow

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$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 – Ultra Seal: Intake Gasket (Part No.5838)

Ultra Seal: Intake Gasket

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$42.99
Ultra-Seal intake manifold gaskets are manufactured from cellulose/nitrile composition gasket material. Provides excellent sealing and durability. Incorporates Silicone beading around each intake and water outlet port to provide additional sealing strength on both sides of each gasket. No gasket sealer required. For OE replacement, high performance street, drag race and oval track use. Includes manifold end seals.

Product Features:
  • Manufactured from cellulose/nitrile composition gasket material
  • Provides excellent sealing and durability
  • Silicone beading on both sides of each gasket
  • Complete with manifold end seals
  • For OE replacement, high performance street, drag race and oval track use
  • Creates Tight Leak proof Seal
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FEL-PRO Performance – Lower Intake Manifold Gasket Set: 11 Piece Set (Part No.1250)

Lower Intake Manifold Gasket Set: 11 Piece Set

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$33.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
  • SEALING TECHNOLOGIES — Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
  • ENGINEERING EXPERTISE — Parts are designed, reviewed, validated and approved by Fel-Pro engineers through rigorous research and development
  • REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
  • EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
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Edelbrock – Intake Manifold Gasket for 1963-1996 Small-Block Fords (Part No.7220)

Intake Manifold Gasket for 1963-1996 Small-Block Fords

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$28.99


Product Features:
  • Clean Positive Seal
  • Embossed Silicone Bead Surrounding The Port
  • Matched To Manifolds And Cylinder Heads
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Mr. Gasket – Valve Cover Gasket Set (Part No.276)

Valve Cover Gasket Set

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$30.19
Mr. Gasket Performance Valve Cover Gaskets are high-density cork/rubber blend gaskets that use evenly sized cork particles distributed evenly throughout the rubber binder. The result is a compressible valve cover gasket without leak paths. These gaskets create a positive seal by controlled swelling of the gasket material when exposed to hot engine oil. Provides excellent flange sealing and durability. For original equipment replacement, high performance street, drag race and oval track use.

Product Features:
  • Manufactured from high-density cork/rubber blend gasket material
  • Provides excellent sealing and durability
  • For OE replacement, high performance street, drag race and oval track use
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FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1684)

Engine Valve Cover Gasket Set

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$46.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Rigid core, molded silicone rubber gaskets provide for ease of installation, and are great for on-again/off-again situations (like setting valve lash).
  • Features high-tech silicone material for long life, a solid steel core for strength and durability, and stainless steel compression limiters to prevent
  • Not intended for use in emission controlled vehicles.
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Mr. Gasket – Valve Cover Gasket Set (Part No.278)

Valve Cover Gasket Set

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$41.49
Mr. Gasket Performance Valve Cover Gaskets are high-density cork/rubber blend gaskets that use evenly sized cork particles distributed evenly throughout the rubber binder. The result is a compressible valve cover gasket without leak paths. These gaskets create a positive seal by controlled swelling of the gasket material when exposed to hot engine oil. Provides excellent flange sealing and durability. For original equipment replacement, high performance street, drag race and oval track use.

Product Features:
  • Manufactured from high-density cork/rubber blend gasket material
  • Provides excellent sealing and durability
  • For OE replacement, high performance street, drag race and oval track use
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Mr. Gasket – Water Neck (Part No.9713)

Water Neck

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$48.09
Precision die cast, these water necks or thermostat housings are first polished to a high luster, then chrome plated. Comes with gasket and Allen head mounting bolts. Fits 1979-1997 Ford 5.0/5.8L V8s.

Product Features:
  • Chrome Plated For Great Looks
  • Includes Gasket & Mounting Bolts
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Spectre – Water Neck; Ford 429-460 (Part No.4734)

Water Neck; Ford 429-460

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$54.99
Spectre’s Ford V8 water neck fits Ford 429 – 460 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 sealing O-ring, and has a 3/8 inch NPT threaded hole for the Ford temp sensor.

Product Features:
  • Fits Ford 429 – 460 engines
  • Has a 3/8 inch NPT threaded hole for temperature sensor
  • Includes sealing O-ring
  • Chrome plated
  • Easy to install
  • Hardware not included
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Spectre – Water Neck; 351C (Part No.4735)

Water Neck; 351C

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$28.99
Spectre’s Ford water neck fits Ford 351 Cleveland 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 and sealing O-ring.

Product Features:
  • Fits Ford 351 Cleveland
  • Includes sealing O-ring and bolts
  • Chrome plated
  • Easy to install
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Edelbrock – Performer Small-Block Ford 5.0L/ 5.8L Cylinder Head 1.90 Polished (Part No.603719)

Performer Small-Block Ford 5.0L/ 5.8L Cylinder Head 1.90 Polished

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$975.99
Product Features:
  • Complete Single For Hydraulic Flat Tappet
  • 60cc Combustion Chamber Volume
  • 170cc Intake/60cc Exhaust Runner Volume
  • 1.9 in. Intake/1.6 in. Exhaust Valve Diameter
  • 0.625 in. Deck Thickness
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Edelbrock – Performer Small-Block Ford 5.0L/ 5.8L Cylinder Head 1.90" (Part No.60379)

Performer Small-Block Ford 5.0L/ 5.8L Cylinder Head 1.90"

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$1035.99
Product Features:
  • Capable of 300 plus horsepower when matched with the Edelbrock Performer Power Package
  • 1.90 in. intake valves are for use with stock pistons
  • Exhaust valve is 1.60 in.
  • 60cc combustion with 170cc intake port
  • Flat Tappet Camshaft Type
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Edelbrock – Performer Small-Block Ford 2.02" Cylinder Head Hydraulic Flat Tappet (Part No.60359)

Performer Small-Block Ford 2.02" Cylinder Head Hydraulic Flat Tappet

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$893.99
Product Features:
  • Made of aluminum with a natural finish
  • 60cc chambers with 170cc intake ports
  • 2.02 in. intake and 1.60 in. exhaust valves
  • Includes intake valves, exhaust valve, valve springs, retainers, locks, guide plate and valve stem seals
  • Does not include damper spring, rocker arms, nuts and drilled steam holes
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FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1811)

PERFORMANCE OIL PAN GASKET SET

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$30.49
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 – 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.1812)

PERFORMANCE OIL PAN GASKET SET

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$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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FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1817)

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 – Mls Head Gasket (Part No.3175G)

Mls Head Gasket

from

$110.99
Our unique Multi-Layered steel head gasket embossment formation process optimizes the embossment radius, reduces stress points, enhances gasket conformability, and provides uniform clamp load distribution. This all results in superior surface contact between block and cylinder head. All head gasket layers/spacers go through an additional process to significantly reduce forming induced stress. Advantages are reduced brittleness in material, increased flexibility and deformation retention. This stabilizes the gasket, resulting in reduced cylinder bore distortion and improved combustion seal fro the extreme cylinder pressures found in high compression, supercharged and turbocharged applications. A proprietary polymer coating ensures the micro-seal of engine coolant and oil fluids.brbrA typical MLS head gasket requires a smoother (30Ra) surface finish than composite head gaskets. Mr. Gasket’s proprietary polymer coating will seal a surface finish twice as rough (60Ra) as a typical MLS head gasket. For high performance street, drag race and oval track use.

Product Features:
  • Gasket bore – 4.030 inch: Compressed thickness – .040 inch
  • Manufactured from 3-layer premium grade stainless steel and state of the art laser cutting
  • Optimized sealing embossments seals extreme cylinder pressure
  • Provides excellent stability and reduces cylinder bore distortion.
  • Proprietary polymer coating ensures the micro seal of engine coolant and oil fluids.
  • Ideal for supercharged, turbocharged, nitrous oxide and extreme compression ratio engines
  • For high-performance street, drag race and oval track use
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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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Edelbrock – Engine Gasket Set (Head / Intake / Exhaust / Valve Cover) for Ford (Part No.7365)

Engine Gasket Set (Head / Intake / Exhaust / Valve Cover) for Ford

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$186.99
Product Features:
  • Head: 4.500″ Bore/0.048″ Thick/12.5cc Vol.
  • Intake: 1.98″x2.26″ Port/.060″ Thick
  • Exhaust: 1.50″x2.10″ Port
  • 5/16″ Valve Cover
  • Multi Piece Configuration
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Mr. Gasket – Head Gasket (Part No.1132G)

Head Gasket

from

$37.59
Mr. Gasket Embossed Steel Shim Cylinder Head Gaskets are for high performance street machines, drag racing and oval track racing. This is a very unique design that has a solid metal on metal fold at the combustion seal. This fold makes for a very stout seal that is almost the equivalent of a higher-end MLS (multi-layer steel) gasket with a gas stopper layer, but at a much lower cost. This gasket also has embossments around the coolant and oil passages and has a thick aluminum flake coating. All of these features result in a steel shim head gasket that handles extreme cylinder pressures very well. It’s probably the best steel shim head gasket you could ask for. Sold individually.

Product Features:
  • Embossed steel with aluminum flake coating
  • Solid metal over metal fold at the combustion seal
  • Embossed seals at coolant and oil passages
  • Approximately .020″ compressed thickness
  • For high performance street, drag race and oval track use.
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Edelbrock – Victor Jr. 302 Intake Manifold Small-Block Ford (Part No.2921)

Victor Jr. 302 Intake Manifold Small-Block Ford

from

$451.99
Race winning design for all types of competition. Single plane maximizes torque and horsepower. Runners feature extra material for custom porting. For performance in 3500 to 7500 RPM range. For modified OE or aftermarket Windsor aluminum heads. Match with Edelbrock heads for maximum performance. Port exits can be opened to 2.10 x 1.18 inch. 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:
  • Race Winning Design for all Types of Competition
  • Single Plane Maximizes Torque and Horsepower
  • Runners Feature Extra Material for Custom Porting
  • For Performance in 3500 to 7500 RPM Range
  • For Modified OE or Aftermarket Windsor Alum Heads
  • Match with Edelbrock Heads for Max Performance
  • Port Exits Can be Opened to 2.10 x 1.18 in.
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Edelbrock – Performer 460 EGR Intake Manifold Big-Block Ford (Part No.3766)

Performer 460 EGR Intake Manifold Big-Block Ford

from

$371.99


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
  • Accepts Late-Model Choke; Waterneck; and HEI
  • Accepts A/C And Alternator
  • Accepts Exhaust Heated Chokes
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Edelbrock – RPM Air-Gap Small Block Ford 351C Intake Manifold (Part No.7564)

RPM Air-Gap Small Block Ford 351C Intake Manifold

from

$513.99
Product Features:
  • 1500-6500 RPM Range
  • Dual Plane Type-4150 Style Flange
  • 4.48 in. Front Height, 5.02 in. Center Height, 5.56 in. Rear Height
  • Satin Finish
  • Non-EGR
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Edelbrock – Torker II Small Block Ford 351W Intake Manifold (Part No.5081)

Torker II Small Block Ford 351W Intake Manifold

from

$403.99
Edelbrock part #5081 Torker II 351W intake manifold is designed for 1969 and later 351 Windsor Ford V8 high-performance engines with Edelbrock heads, OEM 12- or 16-bolt heads or equivalent. Will not fit “Boss 351” Cleveland. Manifold not equipped with EGR

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
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1968 Mercury Marquis Performance Engines

Maybe you’re in the middle of a full rebuild of that 1968 Mercury Marquis. Maybe you just need a couple of Performance Engines. Either way, Advance Auto Parts has 12 different Performance Engines in our inventory ranging from $26.99 to $597.99. That means you can find the exact parts or products you need to keep that 1968 Mercury Marquis running smoothly.

Performance Engines are only as good as their brand. We stock 4 different brands to make sure you have plenty of trusted parts to choose from for your 1968 Mercury Marquis. 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 1968 Mercury Marquis, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 58 reviews in this category, some of the top rated parts include Cylinder Head Gasket: Steel Core Composite, Without Head Bolts with 1.0 stars.

So if you’re in the market for aftermarket Performance Engines to keep your 1968 Mercury Marquis 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 1968 Mercury Marquis Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1968 Mercury Marquis 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 Marquis the best it can be. Be sure to browse some of our top Performance Engines brands and parts.

Popular Edelbrock Performance Engines

We carry Edelbrock parts in our stock across Performance Intake Manifolds categories, plus more. For a 1968 Mercury Marquis, our most popular Edelbrock Performance Engines include:
Performer 390 Intake Manifold for Ford FE, Satin Finish
from $597.99
(1)
Performer 390 Intake Manifold for Ford FE, Satin Finish
Performance Intake Manifolds

Top 1968 Mercury Marquis Performance Engines from Mr. Gasket

Mr. Gasket products are another trusted brand when it comes to Performance Engines for your 1968 Mercury Marquis. 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

FAQs for 1968 Mercury Marquis Performance Engines

What are the most purchased Performance Engines for the 1968 Mercury Marquis?

Out of 12 Performance Engines for the 1968 Mercury Marquis, the most popular in our inventory are:
PERFORMANCE OIL PAN GASKET SET
from $27.49
This product is not rated
PERFORMANCE OIL PAN GASKET SET
Performance Engine Oil Pan Gaskets
Lower Intake Manifold Gasket Set: 5 Piece Set
from $39.99
This product is not rated
Lower Intake Manifold Gasket Set: 5 Piece Set
Performance Engine Intake Manifold Gaskets
Water Neck; Ford 390-428
from $47.99
(1)
Water Neck; Ford 390-428
Performance Water Outlets

What are the top-rated 1968 Mercury Marquis Performance Engines?

Top-rated Performance Engines for your 1968 Mercury Marquis based on customer reviews/ratings are:
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
from $41.99
(1)
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
“Had to call and talk to 3 operators 3 separate times to get this straightened out .On item description should say 1 gasket requires 2.”