1968 Buick GS 400 Performance Engines
Keep Your 1968 Buick GS 400 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 Buick GS 400 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Coolant Thermostats, Performance Engine Valve Springs, and Performance Engine Cylinder Head Gaskets. 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 1968 Buick GS 400 Performance Engine at Advance Auto Parts is around $82.11, with a range that starts at $31.99 and goes up to $157.99. With 5 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Mr. Gasket O-Ring Style Chrome Water Neck, 2557, Edelbrock Sure Seat Valve Springs, 5792, and FEL-PRO Performance Performance Cylinder Head Gasket, 1125 start at just $33.59 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 Air Filters and Performance Fuel Systems. At Advance Auto Parts, we’re here to help you keep your 1968 Buick GS 400 in peak condition, inside and out.
Find Your Specific 1968 Buick GS 400 Performance Engines
Looking for the perfect Performance Engine for your 1968 Buick GS 400? You’re in the right place. Below, you’ll find links to various types of Performance Engines that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Performance Engines, ensuring durability and a precise fit for your Buick GS 400. Whether you’re driving a 1968 model or another popular model year like
1969, we’ve got you covered. Purchasing Performance Engines 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 Engines that fit your vehicle.
Essential 1968 Buick GS 400 Performance Engines
Mr. Gasket – Mr. Gasket High Performance Thermostat – 160 Degree Brass & Copper, 4363 (Part No.4363)
from
$31.99
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.
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FEL-PRO Performance – FEL-PRO Performance Performance Cylinder Head Gasket, 1125 (Part No.1125)
from
$109.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.
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Edelbrock – Edelbrock Cylinder Head Gasket Set, 7346 (Part No.7346)
from
$76.99
“Edelbrock part No: 7346 head gasket is intended for 400-455 C.I.D. Buick V8 engines. This gasket comes as a set and has a 4.400″” bore size, .050″” compressed thickness and 12.5 cc volume.”
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Mr. Gasket – Mr. Gasket O-Ring Style Chrome Water Neck, 2557 (Part No.2557)
from
$33.59
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.
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Edelbrock – Edelbrock Sure Seat Valve Springs, 5792 (Part No.5792)
from
$157.99
The Edelbrock No: 5792 Sure Seat Valve Spring for Chrysler 383-400-413-440 V8 1969-79 O.E Cast iron cylinder heads are made of highest quality spring wire and precision wound to close tolerances, our Sure Seat Valve Spring sets are for use on original equipment heads when installing Edelbrock Performer-Plus, Performer RPM and Torker-Plus camshafts. These are the same high-performance springs used on Edelbrock Performer and RPM cylinder heads. For camshaft warranty compliance, use only the springs recommended by Edelbrock for each camshaft application.
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Popular 1968 Buick GS 400 Performance Engines Categories
Most Popular Performance Engine Coolant Thermostat for 1968 Buick GS 400s
Enhance your 1968 Buick GS 400 with this popular Performance Engine Coolant Thermostat we have in stock, for $31.99.
Mr. Gasket – Mr. Gasket High Performance Thermostat – 160 Degree Brass & Copper, 4363 (Part No.4363)
from
$31.99
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.
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Best-Selling 1968 Buick GS 400 Performance Engine Valve Spring
Upgrade your GS 400 with our best-selling Performance Engine Valve Spring.
Edelbrock – Edelbrock Sure Seat Valve Springs, 5792 (Part No.5792)
from
$157.99
The Edelbrock No: 5792 Sure Seat Valve Spring for Chrysler 383-400-413-440 V8 1969-79 O.E Cast iron cylinder heads are made of highest quality spring wire and precision wound to close tolerances, our Sure Seat Valve Spring sets are for use on original equipment heads when installing Edelbrock Performer-Plus, Performer RPM and Torker-Plus camshafts. These are the same high-performance springs used on Edelbrock Performer and RPM cylinder heads. For camshaft warranty compliance, use only the springs recommended by Edelbrock for each camshaft application.
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Top-Quality Performance Engine Cylinder Head Gaskets for 1968 Buick GS 400s
Choose a high-quality OEM or aftermarket Performance Engine Cylinder Head Gasket for Buick GS 400s and enjoy top-notch performance from $76.99.
FEL-PRO Performance – FEL-PRO Performance Performance Cylinder Head Gasket, 1125 (Part No.1125)
from
$109.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.
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Edelbrock – Edelbrock Cylinder Head Gasket Set, 7346 (Part No.7346)
from
$76.99
“Edelbrock part No: 7346 head gasket is intended for 400-455 C.I.D. Buick V8 engines. This gasket comes as a set and has a 4.400″” bore size, .050″” compressed thickness and 12.5 cc volume.”
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Our Top Pick for a 1968 Buick GS 400 Performance Water Outlet
Invest in a
durable Performance Water Outlet for your 1968 Buick, knowing you’re getting trusted brands and expert craftsmanship.
Mr. Gasket – Mr. Gasket O-Ring Style Chrome Water Neck, 2557 (Part No.2557)
from
$33.59
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.
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FAQs for 1968 Buick GS 400 Performance Engines
What are the best-selling Performance Engines for 1968 Buick GS 400s?
Out of 5 Performance Engines that fit 1968 Buick GS 400s, the following parts are the top sellers:
- Mr. Gasket O-Ring Style Chrome Water Neck, 2557 (22901052) – $33.59
- Edelbrock Sure Seat Valve Springs, 5792 (22341071) – $157.99
- FEL-PRO Performance Performance Cylinder Head Gasket, 1125 (20680215) – $109.99
What’s the price range for 1968 Buick GS 400 Performance Engines?
The prices of Performance Engines for the 1968 Buick GS 400 range from $31.99 up to $157.99 for the most premium parts.
What is the average price of a Performance Engine for a 1968 Buick GS 400?
The average price for Performance Engines for the 1968 Buick GS 400 is $82.11. 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.
What are the cheapest Performance Engines for my 1968 Buick GS 400?
The cheapest 1968 Buick GS 400 Performance Engines we carry are:
- Mr. Gasket High Performance Thermostat – 160 Degree Brass & Copper, 4363 (17360031) – $31.99
- Mr. Gasket O-Ring Style Chrome Water Neck, 2557 (22901052) – $33.59
- Edelbrock Cylinder Head Gasket Set, 7346 (50279097) – $76.99
- FEL-PRO Performance Performance Cylinder Head Gasket, 1125 (20680215) – $109.99
- Edelbrock Sure Seat Valve Springs, 5792 (22341071) – $157.99
Does Advance Auto Parts sell Performance Engines for any other 1968 Buick models?
Yes. We stock Performance Engines for 7 other popular 1968 Buick models. Some of the most popular are 1968 LeSabre Performance Engines, 1968 Skylark Performance Engines, 1968 Riviera Performance Engines, 1968 Electra Performance Engines, and 1968 Special Performance Engines.
What types of Performance Engines do you sell for my 1968 Buick GS 400?
As of 8/2/26, these are some of the most in-demand types of Performance Engines for a 1968 Buick GS 400:
Can I get help with 1968 Buick GS 400 Performance Engine orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Buick Performance Engines and more.
What is your return policy for Buick GS 400 Performance Engines?
Advance Auto Parts keeps returns simple. For new Buick GS 400 Performance Engines and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.