1978 Cadillac Fleetwood Performance Transmissions
Keep Your 1978 Cadillac Fleetwood in Top Shape with Quality Performance Transmissions
Whether you’re repairing or upgrading your Performance Transmission, using high-quality parts is key to keeping your 1978 Cadillac Fleetwood looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Transmission Rebuild Kits and Performance Engine and Transmission Mounts. 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.
Competitive Prices and Extensive Inventory
The average price for a 1978 Cadillac Fleetwood Performance Transmission at Advance Auto Parts is around $247.49, with a range that starts at $84.99 and goes up to $409.99. With 2 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Trans Mount: Urethane-Chevy and Transmission Kit, Master Overhaul Kit For TH400 start at just $84.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Performance Transmission, don’t forget to check out other key components like Performance Distributors and Performance Fuel Systems. At Advance Auto Parts, we’re here to help you keep your 1978 Cadillac Fleetwood in peak condition, inside and out.
Find Your Specific 1978 Cadillac Fleetwood Performance Transmissions
Looking for the perfect Performance Transmission for your 1978 Cadillac Fleetwood? You’re in the right place. Below, you’ll find links to various types of Performance Transmissions that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Performance Transmissions, ensuring durability and a precise fit for your Cadillac Fleetwood. Whether you’re driving a 1978 model or another popular model year like
1981,
1982,
1983,
1984,
1985,
1986,
1994,
1995, and
1996, we’ve got you covered. Purchasing Performance Transmissions from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Performance Transmissions that fit your vehicle.
Essential 1978 Cadillac Fleetwood Performance Transmissions
B & M – Master Overhaul Kit, TH350 Transmission (Part No.21042)
from
$327.99
The Master Racing overhaul kits are supplied with all of the gaskets, seals, bushings, and friction material required for a complete high performance or racing trans overhaul. Does not come with transbrake gaskets or components.
Product Features:
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Product Features:
- Complete High Perf. Or Racing Trans. Overhaul
- Includes Only OEM Valvebody Gaskets
- Instructions Not Included
B & M – Transmission Kit, Master Overhaul Kit For TH400 (Part No.21041)
from
$409.99
These kits include all of the necessary components to rebuild your automatic transmission. OEM style gaskets included. Kits do not include overhaul instructions – please refer to factory shop manual for proper assembly procedures.
Product Features:
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Product Features:
- Complete High Perf. Or Racing Trans. Overhaul
- Includes Only OEM Valvebody Gaskets
- Instructions Not Included
B & M – Transmission Kit, Transkit 68-81 TH-350 Transmission (Part No.30229)
from
$389.99
B&M Transkits give you the same high-quality components that are used in all B&M Street and Strip transmissions. They also include special directions on how to modify your case, pump, and components.
Product Features:
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Product Features:
- High Perf. Friction Materials
- Complete Overhaul Gasket Set
- Modification Components
- Replacement Valves
- Replacement Springs
Lakewood – Trans Mount: Urethane-Chevy (Part No.24350)
from
$84.99
Constructed of durable polyurethane to handle the stress oh high horsepower. Absorbs vibration and lasts longer than rubber Features unique built-in safety lock to keep from separating under high torque loads. Ideal for use on street or strip applications. Complete with grade-8 mounting hardware.
Product Features:
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Product Features:
- Durable Polyurethane
- Absorbs Vibration
- Last Longer Than Rubber
- Built-In Safety Lock
Energy Suspension – Motor Mount (Part No.3.1116G)
from
$38.99
A true performance application component for cars, trucks, hot rods and racing/competition vehicles – yet designed to be also used for street vehicles. Soft-running enough to absorb vibrations for street use yet rugged for racing use. When required- a torque resistant safety interlock design is used that is comparable in strength to those too hard-running metal mounts. Replaces the original, short lived and typically too-soft rubber mounts and outdates those hard-running metal motor mounts. The popular early style mounts for General Motors vehicles are available in either zinc or chrome metal finishes. Made of Hyper-Flex performance polyurethane. Resistant to under vehicle fluids such as: oils, coolants, road contaminants, etc.
Product Features:
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Product Features:
- Gains Both Performance and Longevity
- Will Handle Any and All Torque
- Out Lasts Rubber
Energy Suspension – Motor Mount (Part No.3.1116R)
from
$38.99
A true performance application component for cars, trucks, hot rods and racing/competition vehicles – yet designed to be also used for street vehicles. Soft-running enough to absorb vibrations for street use yet rugged for racing use. When required- a torque resistant safety interlock design is used that is comparable in strength to those too hard-running metal mounts. Replaces the original, short lived and typically too-soft rubber mounts and outdates those hard-running metal motor mounts. The popular early style mounts for General Motors vehicles are available in either zinc or chrome metal finishes. Made of Hyper-Flex performance polyurethane. Resistant to under vehicle fluids such as: oils, coolants, road contaminants, etc.
Product Features:
See More
Product Features:
- Gains Both Performance and Longevity
- Will Handle Any and All Torque
- Out Lasts Rubber
Popular 1978 Cadillac Fleetwood Performance Transmissions Categories
Most Popular Performance Transmission Rebuild Kit for 1978 Cadillac Fleetwoods
Enhance your 1978 Cadillac Fleetwood with this popular Performance Transmission Rebuild Kit we have in stock, for $409.99.
B & M – Transmission Kit, Master Overhaul Kit For TH400 (Part No.21041)
from
$409.99
These kits include all of the necessary components to rebuild your automatic transmission. OEM style gaskets included. Kits do not include overhaul instructions – please refer to factory shop manual for proper assembly procedures.
Product Features:
See More
Product Features:
- Complete High Perf. Or Racing Trans. Overhaul
- Includes Only OEM Valvebody Gaskets
- Instructions Not Included
Best-Selling 1978 Cadillac Fleetwood Performance Engine and Transmission Mount
Upgrade your Fleetwood with our best-selling Performance Engine and Transmission Mount.
Lakewood – Trans Mount: Urethane-Chevy (Part No.24350)
from
$84.99
Constructed of durable polyurethane to handle the stress oh high horsepower. Absorbs vibration and lasts longer than rubber Features unique built-in safety lock to keep from separating under high torque loads. Ideal for use on street or strip applications. Complete with grade-8 mounting hardware.
Product Features:
See More
Product Features:
- Durable Polyurethane
- Absorbs Vibration
- Last Longer Than Rubber
- Built-In Safety Lock
FAQs for 1978 Cadillac Fleetwood Performance Transmissions
What are the best-selling Performance Transmissions for 1978 Cadillac Fleetwoods?
Out of 2 Performance Transmissions that fit 1978 Cadillac Fleetwoods, the following parts are the top sellers:
- Trans Mount: Urethane-Chevy (22901287) – $84.99
- Transmission Kit, Master Overhaul Kit For TH400 (17130093) – $409.99
What’s the price range for 1978 Cadillac Fleetwood Performance Transmissions?
The prices of Performance Transmissions for the 1978 Cadillac Fleetwood range from $84.99 up to $409.99 for the most premium parts.
What is the average price of a Performance Transmissions Performance Transmission for a 1978 Cadillac Fleetwood?
The average price for Performance Transmissions for the 1978 Cadillac Fleetwood is $247.49. Keep in mind the variety of part types within our Performance Transmission 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 Transmissions for other Cadillac Fleetwood model years?
What are the cheapest Performance Transmissions for my 1978 Cadillac Fleetwood?
The cheapest 1978 Cadillac Fleetwood Performance Transmissions we carry are:
- Trans Mount: Urethane-Chevy (22901287) – $84.99
- Transmission Kit, Master Overhaul Kit For TH400 (17130093) – $409.99
Does Advance Auto Parts sell Performance Transmissions for any other 1978 Cadillac models?
Yes. We stock Performance Transmissions for 2 other popular 1978 Cadillac models. Some of the most popular are 1978 DeVille Performance Transmissions, 1978 Seville Performance Transmissions, and 1978 Commercial Chassis Performance Transmissions.
What types of Performance Transmissions do you sell for my 1978 Cadillac Fleetwood?
As of 4/10/25, these are some of the most in-demand types of Performance Transmissions for a 1978 Cadillac Fleetwood:
Can I get help with 1978 Cadillac Fleetwood Performance Transmission orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Cadillac Performance Transmissions and more.
What is your return policy for Cadillac Fleetwood Performance Transmissions?
Advance Auto Parts keeps returns simple. For new Cadillac Fleetwood Performance Transmissions and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.