1966 AMC Classic Performance Engines
Keep Your 1966 AMC Classic 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 1966 AMC Classic 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 Lock, and Performance Engine Timing Sets and Components. 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 1966 AMC Classic Performance Engine at Advance Auto Parts is around $41.74, with a range that starts at $31.99 and goes up to $73.99. With 3 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like "Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16" and Competition Cams High Energy Timing Set for ’69-’81 AMC 290-401 V8, 3218 start at just $43.99 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 Distributors and Performance Fuel Systems. At Advance Auto Parts, we’re here to help you keep your 1966 AMC Classic in peak condition, inside and out.
Essential 1966 AMC Classic 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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Competition Cams – "Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16" (Part No.612-16)
from
$43.99
Inside tang-to-taper relationship held tightly for repeatable valve spring installed heights
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Competition Cams – Competition Cams High Energy Timing Set for ’69-’81 AMC 290-401 V8, 3218 (Part No.3218)
Popular 1966 AMC Classic Performance Engines Categories
Most Popular Performance Engine Coolant Thermostat for 1966 AMC Classics
Enhance your 1966 AMC Classic 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 1966 AMC Classic Performance Engine Valve Lock
Upgrade your Classic with our best-selling Performance Engine Valve Lock.
Competition Cams – "Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16" (Part No.612-16)
from
$43.99
Inside tang-to-taper relationship held tightly for repeatable valve spring installed heights
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Top-Quality Performance Engine Timing Sets and Components for 1966 AMC Classics
Choose a high-quality OEM or aftermarket Performance Engine Timing Sets and Component for AMC Classics and enjoy top-notch performance from $73.99.
Competition Cams – Competition Cams High Energy Timing Set for ’69-’81 AMC 290-401 V8, 3218 (Part No.3218)
FAQs for 1966 AMC Classic Performance Engines
What are the best-selling Performance Engines for 1966 AMC Classics?
Out of 3 Performance Engines that fit 1966 AMC Classics, the following parts are the top sellers:
- "Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16" (10203685) – $43.99
- Competition Cams High Energy Timing Set for ’69-’81 AMC 290-401 V8, 3218 (50287893) – $73.99
What’s the price range for 1966 AMC Classic Performance Engines?
The prices of Performance Engines for the 1966 AMC Classic range from $31.99 up to $73.99 for the most premium parts.
What is the average price of a Performance Engine for a 1966 AMC Classic?
The average price for Performance Engines for the 1966 AMC Classic is $41.74. 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 1966 AMC Classic?
The cheapest 1966 AMC Classic Performance Engines we carry are:
- Mr. Gasket High Performance Thermostat – 160 Degree Brass & Copper, 4363 (17360031) – $31.99
- "Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16" (10203685) – $43.99
- Competition Cams High Energy Timing Set for ’69-’81 AMC 290-401 V8, 3218 (50287893) – $73.99
Does Advance Auto Parts sell Performance Engines for any other 1966 AMC models?
Yes. We stock Performance Engines for 4 other popular 1966 AMC models. Some of the most popular are 1966 Ambassador Performance Engines, 1966 Rebel Performance Engines, 1966 Marlin Performance Engines, 1966 American Performance Engines, and 1966 Rogue Performance Engines.
What are the top-rated Performance Engines that fit the 1966 AMC Classic?
The one 1966 AMC Classic Performance Engine we have in stock is the Mr. Gasket High Performance Thermostat – 160 Degree Brass & Copper, 4363. It is rated 4 stars and costs $31.99.
What types of Performance Engines do you sell for my 1966 AMC Classic?
As of 8/2/26, these are some of the most in-demand types of Performance Engines for a 1966 AMC Classic:
Can I get help with 1966 AMC Classic Performance Engine orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about AMC Performance Engines and more.
What is your return policy for AMC Classic Performance Engines?
Advance Auto Parts keeps returns simple. For new AMC Classic Performance Engines and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.