1966 AMC Ambassador Performance Engines

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Keep Your 1966 AMC Ambassador 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 Ambassador looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Timing Sets and Components, Performance Engine Coolant Thermostats, and Performance Engine Valve Lock. 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 Ambassador Performance Engine at Advance Auto Parts is around $53.85, with a range that starts at $31.99 and goes up to $130.99. With 4 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like "Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16", Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7818, 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 Ambassador in peak condition, inside and out.

Essential 1966 AMC Ambassador Performance Engines

Edelbrock – Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7818 (Part No.7818)

Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7818

from

$130.99
Edelbrock part No: 7818 Performer-Link timing chain is for use with Edelbrock or stock cams. They have a solid-bushing chain for a true bearing surface that rolls with the sprockets, eliminating chain stretch. Cam sprockets are made from 35,000 psi tensile strength cast iron. Crank sprockets are made from billet SAE-1144 steel and induction heat treated. Four Performer-Link sets are stock replacement parts and 50-state legal (see listings in bold type). All other sets have three keyway setting points to ensure accurate timing selection for early or late-model vehicles. Performer-Link timing sets are not for use above 6500 rpm. Performer roller chain sets are engineered to operate up to 6500 rpm. Never hammer directly on chain or sprockets. You can crack the hardened links and pins and cause early failures. Use a sleeve for installations that require hammering, a brass drift punch may be used if you carefully alternate blows on either side of the sprocket to avoid cocking. Never stretch the chain with a screwdriver. Check for clearance between the timing chain and block and between the chain and front cover before reassembly. Be sure that both cam and crank sprockets are exactly in line with each other. Misalignment can cause chain to break.
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Competition Cams – Competition Cams High Energy Timing Set for ’69-’81 AMC 290-401 V8, 3218 (Part No.3218)

Competition Cams High Energy Timing Set for '69-'81 AMC 290-401 V8, 3218

from

$73.99
Competition Cams High Energy Timing Set for ’69-’81 AMC 290-401 V8, 3218.
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Competition Cams – "Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16" (Part No.612-16)

"Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16"

from

$43.99
Inside tang-to-taper relationship held tightly for repeatable valve spring installed heights
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Mr. Gasket – Mr. Gasket High Performance Thermostat – 160 Degree Brass & Copper, 4363 (Part No.4363)

Mr. Gasket High Performance Thermostat - 160 Degree Brass & Copper, 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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Most Popular Performance Engine Timing Sets and Components for 1966 AMC Ambassadors

Enhance your 1966 AMC Ambassador with one of the 2 Performance Engine Timing Sets and Components we have in stock, starting at just $73.99.

Edelbrock – Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7818 (Part No.7818)

Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7818

from

$130.99
Edelbrock part No: 7818 Performer-Link timing chain is for use with Edelbrock or stock cams. They have a solid-bushing chain for a true bearing surface that rolls with the sprockets, eliminating chain stretch. Cam sprockets are made from 35,000 psi tensile strength cast iron. Crank sprockets are made from billet SAE-1144 steel and induction heat treated. Four Performer-Link sets are stock replacement parts and 50-state legal (see listings in bold type). All other sets have three keyway setting points to ensure accurate timing selection for early or late-model vehicles. Performer-Link timing sets are not for use above 6500 rpm. Performer roller chain sets are engineered to operate up to 6500 rpm. Never hammer directly on chain or sprockets. You can crack the hardened links and pins and cause early failures. Use a sleeve for installations that require hammering, a brass drift punch may be used if you carefully alternate blows on either side of the sprocket to avoid cocking. Never stretch the chain with a screwdriver. Check for clearance between the timing chain and block and between the chain and front cover before reassembly. Be sure that both cam and crank sprockets are exactly in line with each other. Misalignment can cause chain to break.
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Competition Cams – Competition Cams High Energy Timing Set for ’69-’81 AMC 290-401 V8, 3218 (Part No.3218)

Competition Cams High Energy Timing Set for '69-'81 AMC 290-401 V8, 3218

from

$73.99
Competition Cams High Energy Timing Set for ’69-’81 AMC 290-401 V8, 3218.
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Best-Selling 1966 AMC Ambassador Performance Engine Coolant Thermostat

Upgrade your Ambassador with our best-selling Performance Engine Coolant Thermostat with a 4 Starts rating across 12 reviews.

Mr. Gasket – Mr. Gasket High Performance Thermostat – 160 Degree Brass & Copper, 4363 (Part No.4363)

Mr. Gasket High Performance Thermostat - 160 Degree Brass & Copper, 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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Top-Quality Performance Engine Valve Lock for 1966 AMC Ambassadors

Choose a high-quality OEM or aftermarket Performance Engine Valve Lock for AMC Ambassadors and enjoy top-notch performance from $43.99.

Competition Cams – "Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16" (Part No.612-16)

"Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16"

from

$43.99
Inside tang-to-taper relationship held tightly for repeatable valve spring installed heights
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FAQs for 1966 AMC Ambassador Performance Engines

What are the best-selling Performance Engines for 1966 AMC Ambassadors?

Out of 4 Performance Engines that fit 1966 AMC Ambassadors, the following parts are the top sellers:

What’s the price range for 1966 AMC Ambassador Performance Engines?

The prices of Performance Engines for the 1966 AMC Ambassador range from $31.99 up to $130.99 for the most premium parts.

What is the average price of a Performance Engine for a 1966 AMC Ambassador?

The average price for Performance Engines for the 1966 AMC Ambassador is $53.85. 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 AMC Ambassador model years?

Yes, we carry Performance Engines for 7 model years of AMC Ambassadors between 1967 and 1974. The following model years are the most popular for Performance Engine purchases: 1974, 1973, 1972, 1971, 1970, 1969, 1968, and 1967.

What are the cheapest Performance Engines for my 1966 AMC Ambassador?

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 Rebel Performance Engines, 1966 Marlin Performance Engines, 1966 American Performance Engines, 1966 Classic Performance Engines, and 1966 Rogue Performance Engines.

What are the top-rated Performance Engines that fit the 1966 AMC Ambassador?

The one 1966 AMC Ambassador 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 Ambassador?

As of 8/2/26, these are some of the most in-demand types of Performance Engines for a 1966 AMC Ambassador:

Can I get help with 1966 AMC Ambassador 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 Ambassador Performance Engines?

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