1966 AMC American Performance Engines
Keep Your 1966 AMC American 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 American looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Camshaft and Lifter Kits, Performance Engine Valve Lifters, and Performance Engine Coolant Thermostats. 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 American Performance Engine at Advance Auto Parts is around $83.91, with a range that starts at $10.99 and goes up to $656.99. With 9 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like High Performance Thermostat, ENGINE TIMING SET, and 7 Degree Steel Retainer for 3/8" Valve with 1.437"-1.500" Spring start at just $10.99 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 Ignition Products and Performance Radiators. At Advance Auto Parts, we’re here to help you keep your 1966 AMC American in peak condition, inside and out.
Find Your Specific 1966 AMC American Performance Engines
Looking for the perfect Performance Engine for your 1966 AMC American? 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 AMC American. Whether you’re driving a 1966 model or another popular model year like
1964,
1965,
1967, and
1968, 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 1966 AMC American Performance Engines
Mr. Gasket – High Performance Thermostat (Part No.4365)
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.
Product Features:
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Product Features:
- Opens At 195 Degrees
- Designed to Resist Large Variations of Coolant Pressure at High RPM
- Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
- For High Performance Street, Drag Race, and Oval Track
- Copper & Brass Construction – Resists Corrosion
- High Flow
Mr. Gasket – High Performance Thermostat – 160 Degree Brass & Copper (Part No.4363)
from
$29.49
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.
Product Features:
See More
Product Features:
- Opens at 160 Degrees
- Designed to Resist Large Variations of Coolant Pressure at High RPM
- Fully opens at Correct Temperature Consistently Regardless of engine RPM
- For High Performance Street, Drag Race, and Oval Track
- Copper & Brass Construction – Resists Corrosion
- High Flow
Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)
from
$29.99
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.
Product Features:
See More
Product Features:
- Opens At 180 Degrees
- Designed to Resist Large Variations of Coolant Pressure at High RPM
- Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
- For High Performance Street, Drag Race, and Oval Track
- Copper & Brass Construction – Resists Corrosion
- High Flow
Popular 1966 AMC American Performance Engines Categories
Most Popular Performance Engine Camshaft and Lifter Kit for 1966 AMC Americans
Enhance your 1966 AMC American with this popular Performance Engine Camshaft and Lifter Kit we have in stock, for $656.99.
Competition Cams – Thumpr 227/241 Hydraulic Flat Cam and Lifter Kit for AMC 290-401 (Part No.CL10-600-5)
from
$656.99
Thumpr 227/241 Hydraulic Flat Cam and Lifter Kit for AMC 290-401
Best-Selling 1966 AMC American Performance Engine Valve Lifters
Upgrade your American with one of our 2 best-selling Performance Engine Valve Lifters.
Competition Cams – Pro Magnum Hydraulic Lifter for AMC 199-258, 290-401, Chrysler 273-360/383-440 (Part No.867-1)
from
$14.99
Pro Magnum Hydraulic Lifter for AMC 199-258, 290-401, Chrysler 273-360/383-440
Competition Cams – High Energy Hydraulic Flat Lifter for AMC 199-258 and Chrysler 273-360/383-440 (Part No.822-1)
from
$13.99
High Energy Hydraulic Flat Lifter for AMC 199-258 and Chrysler 273-360/383-440
Top-Quality Performance Engine Coolant Thermostats for 1966 AMC Americans
Choose a high-quality OEM or aftermarket Performance Engine Coolant Thermostat for AMC Americans and enjoy top-notch performance from $29.49.
Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)
from
$29.99
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.
Product Features:
See More
Product Features:
- Opens At 180 Degrees
- Designed to Resist Large Variations of Coolant Pressure at High RPM
- Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
- For High Performance Street, Drag Race, and Oval Track
- Copper & Brass Construction – Resists Corrosion
- High Flow
Mr. Gasket – High Performance Thermostat – 160 Degree Brass & Copper (Part No.4363)
from
$29.49
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.
Product Features:
See More
Product Features:
- Opens at 160 Degrees
- Designed to Resist Large Variations of Coolant Pressure at High RPM
- Fully opens at Correct Temperature Consistently Regardless of engine RPM
- For High Performance Street, Drag Race, and Oval Track
- Copper & Brass Construction – Resists Corrosion
- High Flow
Mr. Gasket – High Performance Thermostat (Part No.4365)
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.
Product Features:
See More
Product Features:
- Opens At 195 Degrees
- Designed to Resist Large Variations of Coolant Pressure at High RPM
- Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
- For High Performance Street, Drag Race, and Oval Track
- Copper & Brass Construction – Resists Corrosion
- High Flow
Top Picks for 1966 AMC American Performance Engine Valve Spring Retainer
Invest in one of our 2 durable Performance Engine Valve Spring Retainer for your 1966 AMC, knowing you’re getting trusted brands and expert craftsmanship.
Competition Cams – 7 Degree Steel Retainer Set of 12 for 3/8" Valve with 1.437"-1.500" Spring (Part No.744-12)
from
$61.99
7 Degree Steel Retainer Set of 12 for 3/8" Valve with 1.437"-1.500" Spring
Competition Cams – 7 Degree Steel Retainer for 3/8" Valve with 1.437"-1.500" Spring (Part No.744-1)
from
$10.99
7 Degree Steel Retainer for 3/8" Valve with 1.437"-1.500" Spring
Our Performance Engine Timing Sets and Components for 1966 AMC Americans
Make a smart move for your 1966 AMC American with our Performance Engine Timing Sets and Component for $64.99.
Competition Cams – ENGINE TIMING SET (Part No.3219)
from
$64.99
ENGINE TIMING SET
FAQs for 1966 AMC American Performance Engines
What are the best-selling Performance Engines for 1966 AMC Americans?
Out of 9 Performance Engines that fit 1966 AMC Americans, the following parts are the top sellers:
- High Performance Thermostat (22903641) – $31.99
- ENGINE TIMING SET (50288716) – $64.99
- 7 Degree Steel Retainer for 3/8" Valve with 1.437"-1.500" Spring (50289111) – $10.99
What’s the price range for 1966 AMC American Performance Engines?
The prices of Performance Engines for the 1966 AMC American range from $10.99 up to $656.99 for the most premium parts.
What is the average price of a Performance Engine for a 1966 AMC American?
The average price for Performance Engines for the 1966 AMC American is $83.91. 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 American model years?
What are the cheapest Performance Engines for my 1966 AMC American?
The cheapest 1966 AMC American Performance Engines we carry are:
- 7 Degree Steel Retainer for 3/8" Valve with 1.437"-1.500" Spring (50289111) – $10.99
- High Energy Hydraulic Flat Lifter for AMC 199-258 and Chrysler 273-360/383-440 (50289523) – $13.99
- Pro Magnum Hydraulic Lifter for AMC 199-258, 290-401, Chrysler 273-360/383-440 (50286582) – $14.99
- High Performance Thermostat – 160 Degree Brass & Copper (17360031) – $29.49
- High Performance 180 Degree Thermostat for Increased Flow (17360033) – $29.99
Does Advance Auto Parts sell Performance Engines for any other 1966 AMC models?
Yes. We stock Performance Engines for 2 other popular 1966 AMC models. Some of the most popular are 1966 Ambassador Performance Engines, 1966 Marlin Performance Engines, and 1966 Classic Performance Engines.
What are the top-rated Performance Engines that fit the 1966 AMC American?
The one 1966 AMC American Performance Engine we have in stock is the 7 Degree Steel Retainer for 3/8" Valve with 1.437"-1.500" Spring. It costs $10.99.
What types of Performance Engines do you sell for my 1966 AMC American?
As of 11/2/25, these are some of the most in-demand types of Performance Engines for a 1966 AMC American:
Can I get help with 1966 AMC American 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 American Performance Engines?
Advance Auto Parts keeps returns simple. For new AMC American Performance Engines and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.