1968 Cadillac Eldorado Performance Engines

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Keep Your 1968 Cadillac Eldorado 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 1968 Cadillac Eldorado looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Valve Springs, Performance Water Outlets, and Performance Engine Camshafts. 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 B & M. For example, B & M Performance Engines start at just $382.99 with an average 4.3 star rating. With over 2 reviews and a solid 5 star average, you can shop with confidence knowing other Cadillac Eldorado owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1968 Cadillac Eldorado Performance Engine at Advance Auto Parts is around $356.02, with a range that starts at $10.99 and goes up to $972.99. With 17 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like O-Ring Style Chrome Water Neck, VALVE SEALS, 11/32" TEFLON 1 ST, and Performance Torque Converter for GM TH400, 350, & 375 Transmissions start at just $32.49 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 Fuel Systems and Performance Ignition Products. At Advance Auto Parts, we’re here to help you keep your 1968 Cadillac Eldorado in peak condition, inside and out.

Essential 1968 Cadillac Eldorado Performance Engines

Competition Cams – 10 Degree Steel Retainer for 26120 Beehive Spring (Part No.795-1)

10 Degree Steel Retainer for 26120 Beehive Spring

from

$10.99
10 Degree Steel Retainer for 26120 Beehive Spring

B & M – Torque Converter, Nitrous Holeshot 3000 (Part No.20481)

Torque Converter, Nitrous Holeshot 3000

from

$921.99
Nitrous Holeshot Converters are Built with the same features as the other B&M Holeshots, with the addition of anti-balloon plates. The anti-balloon plates will allow these converters to stand up to the instant horsepower nitrous delivers.

Product Features:
  • 2800-3200 RPM
  • Small And Big Blocks
  • Serious Performance
  • Furnace Brazed
  • Fully Balanced
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B & M – Holeshot 2400 (Part No.20412)

Holeshot 2400

from

$562.99
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 – Tork Master 3000 (Part No.20402)

Tork Master 3000

from

$562.99
Torque Converter – Tork Master 3000 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) APPLICATION: Tork Master 3000 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) The Tork Master is B&M’s lowest cost performance torque converter. The Tork Master is an excellent all-around performance street converter. The best ‘value priced’ street converters available, Tork Master converters come with a new precision pump drive tube and all are pressure tested and fully balanced. The Tork Master torque converter is not recommended for big block or supercharged applications. New allow steel pump drive tube. Needle thrust bearing when factory equipped. New thrust washer between turbine and cover when required.

Product Features:
  • New Precision Pump Drive Tube
  • Pressure Tested
  • Fully Balanced
  • Needle Thrust Bearing
  • New Thrust Washer
  • Washer Between Turbine and Cover
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B & M – Holeshot 3600 (Part No.20425)

Holeshot 3600

from

$972.99
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
See More

B & M – Tork Master 2400 (Part No.20404)

Tork Master 2400

from

$382.99
Torque Converter – Tork Master 2400 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) APPLICATION: Tork Master 2400 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) The Tork Master is B&M’s lowest cost performance torque converter. The Tork Master is an excellent all-around performance street converter. The best value priced street converters available, Tork Master converters come with a new precision pump drive tube and all are pressure tested and fully balanced. The Tork Master torque converter is not recommended for big block or supercharged applications. New alloy steel pump drive tube. Needle thrust bearing when factory equipped. New thrust washer between turbine and cover when required. Due to torque converter core availability, the actual converter size may vary but performance functionality will be as advertised.

Product Features:
  • New Precision Pump Drive Tube
  • Pressure Tested
  • Fully Balanced
  • Needle Thrust Bearing
  • New Thrust Washer
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B & M – Performance Torque Converter for GM TH400, 350, & 375 Transmissions (Part No.20400)

Performance Torque Converter for GM TH400, 350, & 375 Transmissions

from

$337.99
Torque Converter – Tork Master 2000 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) APPLICATION: Tork Master 2000 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) The Tork Master is B&M’s lowest cost

Product Features:
  • New Precision Pump Drive Tube
  • Pressure Tested
  • Fully Balanced
  • Needle Thrust Bearing
  • New Thrust Washer
See More

Competition Cams – VALVE SEALS, 11/32" TEFLON 1 ST (Part No.503-16)

VALVE SEALS, 11/32" TEFLON 1 ST

from

$223.99
COMP Cams offers a complete line of valve stem seals, from the umbrella seals to the positive-stop Teflon seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The umbrella seal is normally used when a larger-than-stock diameter spring is used, in the case of a double spring, the positive-stop Teflon seal is used. The umbrella seals require no machining, but with the Teflon seal it is necessary to disassemble the heads and machine the top of the guide with a special .530 diameter cutter. Whenever you are planning an engine overhaul or a cam change, don’t forget the valve seals.

Product Features:
  • Work with .530″ guides and 11/32″ valve stem diameter
  • Valve stem oil seals keep unwanted oil from entering the combustion chamber
  • Several different types of valve seals are offered
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Spectre – Water Neck; Olds (Part No.4733)

Water Neck; Olds

from

$26.99
Spectre’s Oldsmobile V8 water neck fits Oldsmobile 330, 350, 425 and 455 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 has an additional by-pass hose connection and includes the bolts.

Product Features:
  • Fits Oldsmobile 330, 350, 425 and 455 engines
  • Chrome plated
  • Bolts included
  • Designed for OEM fit
  • Easy to install
  • O-ring/gasket not included
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Mr. Gasket – O-Ring Style Chrome Water Neck (Part No.2557)

O-Ring Style Chrome Water Neck

from

$32.49
Precision die cast, these water necks are first polished to a high luster, then chrome plated. Features an O-ring style seal to prevent water leaks. Comes with O-ring gasket and mounting bolts.

Product Features:
  • Complete with o-rings and mounting bolts
  • Features an o-ring style seal to prevent water leaks
  • Chrome plated
  • 1/2″ NPT port can be used for various coolant temp related sensors or switches
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Competition Cams – Mutha’ Thumpr 234/249 Hydraulic Flat Cam (Part No.42-601-5)

Mutha' Thumpr 234/249 Hydraulic Flat Cam

from

$341.99
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.
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Competition Cams – Thumpr 226/241 Hydraulic Flat Cam (Part No.42-600-5)

Thumpr 226/241 Hydraulic Flat Cam

from

$341.99
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

Most Popular Performance Engine Valve Springs for 1968 Cadillac Eldorados

Enhance your 1968 Cadillac Eldorado with one of the 4 Performance Engine Valve Springs we have in stock, starting at just $11.99.

Competition Cams – 16 Springs (Part No.26986-16)

16 Springs

from

$401.99
16 Springs

Competition Cams – 16 Springs (Part No.26981-16)

16 Springs

from

$336.99
16 Springs

Competition Cams – 1 Spring (Part No.26981-1)

1 Spring

from

$20.99
1 Spring

Competition Cams – Engine Valve Spring (Part No.981-1)

Engine Valve Spring

from

$11.99
Engine Valve Spring

Best-Selling 1968 Cadillac Eldorado Performance Water Outlet

Upgrade your Eldorado with our best-selling Performance Water Outlet.

Mr. Gasket – O-Ring Style Chrome Water Neck (Part No.2557)

O-Ring Style Chrome Water Neck

from

$32.49
Precision die cast, these water necks are first polished to a high luster, then chrome plated. Features an O-ring style seal to prevent water leaks. Comes with O-ring gasket and mounting bolts.

Product Features:
  • Complete with o-rings and mounting bolts
  • Features an o-ring style seal to prevent water leaks
  • Chrome plated
  • 1/2″ NPT port can be used for various coolant temp related sensors or switches
See More

Top-Quality Performance Engine Camshafts for 1968 Cadillac Eldorados

Choose a high-quality OEM or aftermarket Performance Engine Camshaft for Cadillac Eldorados and enjoy top-notch performance from $614.99.

Competition Cams – High Energy 218/218 Hydraulic Flat Cam for Cadillac 425, 472, 500 (Part No.94-304-5)

High Energy 218/218 Hydraulic Flat Cam for Cadillac 425, 472, 500

from

$625.99
High Energy 218/218 Hydraulic Flat Cam for Cadillac 425, 472, 500

Competition Cams – High Energy 212/212 Hydraulic Flat Cam for Cadillac 425, 472, 500 (Part No.94-302-5)

High Energy 212/212 Hydraulic Flat Cam for Cadillac 425, 472, 500

from

$614.99
High Energy 212/212 Hydraulic Flat Cam for Cadillac 425, 472, 500

Our Top Pick for a 1968 Cadillac Eldorado Performance Engine Valve Stem Seal Set

Invest in a durable Performance Engine Valve Stem Seal Set for your 1968 Cadillac, knowing you’re getting trusted brands and expert craftsmanship.

Competition Cams – VALVE SEALS, 11/32" TEFLON 1 ST (Part No.503-16)

VALVE SEALS, 11/32" TEFLON 1 ST

from

$223.99
COMP Cams offers a complete line of valve stem seals, from the umbrella seals to the positive-stop Teflon seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The umbrella seal is normally used when a larger-than-stock diameter spring is used, in the case of a double spring, the positive-stop Teflon seal is used. The umbrella seals require no machining, but with the Teflon seal it is necessary to disassemble the heads and machine the top of the guide with a special .530 diameter cutter. Whenever you are planning an engine overhaul or a cam change, don’t forget the valve seals.

Product Features:
  • Work with .530″ guides and 11/32″ valve stem diameter
  • Valve stem oil seals keep unwanted oil from entering the combustion chamber
  • Several different types of valve seals are offered
See More

Our Performance Engine Valve Spring Retainer for 1968 Cadillac Eldorados

Make a smart move for your 1968 Cadillac Eldorado with our Performance Engine Valve Spring Retainer for $10.99.

Competition Cams – 10 Degree Steel Retainer for 26120 Beehive Spring (Part No.795-1)

10 Degree Steel Retainer for 26120 Beehive Spring

from

$10.99
10 Degree Steel Retainer for 26120 Beehive Spring

Top-Rated Performance Engine Brands For Your 1968 Cadillac Eldorado

When it comes to finding the perfect Performance Engine for your 1968 Cadillac Eldorado, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 3 trusted brands. We carry the most popular Performance Engine brands including B & M, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $382.99. Purchasing a Performance Engine from us here at Advance Auto Parts is a smart move for both you and your 1968 Cadillac Eldorado, providing peace of mind with parts that meet or exceed OEM standards.

Popular B & M 1968 Cadillac Eldorado Performance Engines

If you’re looking for a top-quality Performance Engine for your 1968 Cadillac Eldorado, Advance Auto Parts has exactly what you need with our selection of B & M Performance Engines. We have 2 B & M Performance Engines in stock for this fitment, all known for their durability and precision fit. With prices starting at just $382.99 and an average cost of $472.99, you’ll find the perfect Performance Engine for your needs and budget. B & M Performance Engines for the 1968 Cadillac Eldorado come highly rated, with over 2 customer reviews and an impressive average rating of 4.3 stars. Choosing a B & M Performance Engine from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Tork Master 2400
from $382.99
(1)
Tork Master 2400
“The B&M 2400 stall converter was a great choice for my application. It works well on the street and track, increased performance by leaps and bounds. ”
Tork Master 3000
from $562.99
(1)
Tork Master 3000
“good parts and very strong”

FAQs for 1968 Cadillac Eldorado Performance Engines

What are the best-selling Performance Engines for 1968 Cadillac Eldorados?

Out of 17 Performance Engines that fit 1968 Cadillac Eldorados, the following parts are the top sellers:

What’s the price range for 1968 Cadillac Eldorado Performance Engines?

The prices of Performance Engines for the 1968 Cadillac Eldorado range from $10.99 up to $972.99 for the most premium parts.

What is the average price of a Performance Engine for a 1968 Cadillac Eldorado?

The average price for Performance Engines for the 1968 Cadillac Eldorado is $356.02. 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 Cadillac Eldorado model years?

Yes, we carry Performance Engines for 26 model years of Cadillac Eldorados between 1964 and 1991. The following model years are the most popular for Performance Engine purchases: 1989, 1988, 1987, 1986, 1982, 1981, 1980, 1979, and 1978.

What are the cheapest Performance Engines for my 1968 Cadillac Eldorado?

The cheapest 1968 Cadillac Eldorado Performance Engines we carry are:

Does Advance Auto Parts sell Performance Engines for any other 1968 Cadillac models?

Yes. We stock Performance Engines for 3 other popular 1968 Cadillac models. Some of the most popular are 1968 DeVille Performance Engines, 1968 Fleetwood Performance Engines, 1968 Calais Performance Engines, and 1968 Commercial Chassis Performance Engines.

What types of Performance Engines do you sell for my 1968 Cadillac Eldorado?

As of 6/2/26, these are some of the most in-demand types of Performance Engines for a 1968 Cadillac Eldorado:

Can I get help with 1968 Cadillac Eldorado Performance Engine orders?

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

What is your return policy for Cadillac Eldorado Performance Engines?

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