1966 GMC G1000 Series Performance Engines
Keep Your 1966 GMC G1000 Series 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 GMC G1000 Series looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Cylinder Head Gaskets, Performance Engine Main Bearing Gasket Sets, and Performance Engine Oil Pan 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 1966 GMC G1000 Series Performance Engine at Advance Auto Parts is around $249.99, with a range that starts at $15.99 and goes up to $899.99. With 10 options in stock from 4 trusted brands, finding the right fit is easy. Popular picks like High Performance Thermostat, Engine Valve Cover Gasket Set, and PERFORMANCE OIL PAN GASKET SET start at just $22.99 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 GMC G1000 Series in peak condition, inside and out.
Find Your Specific 1966 GMC G1000 Series Performance Engines
Looking for the perfect Performance Engine for your 1966 GMC G1000 Series? 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 GMC G1000 Series. Whether you’re driving a 1966 model or another popular model year like
1963,
1964, and
1965, 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 GMC G1000 Series Performance Engines
FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1640)
from
$22.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
Product Features:
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Product Features:
- Blue Stripe performance cork-rubber gaskets use cork particles evenly distributed throughout a rubber binder resulting in a compressible gasket without leak paths.
- Not intended for use in emission controlled vehicles.
B & M – Torque Converter, Nitrous Holeshot 3600 (Part No.20482)
from
$749.99
Nitrous Holeshot Converters are Built with the same features as the other B&M Holeshots, with the addition of anti-balloon plates. The anti-balloon plates will allow these converters to stand up to the instant horsepower nitrous delivers.
Product Features:
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Product Features:
- 3400-3800 RPM
- Small And Big Blocks
- Serious Performance
- Furnace Brazed
- Fully Balanced
B & M – Torque Converter, Nitrous Holeshot 3000 (Part No.20481)
from
$899.99
Nitrous Holeshot Converters are Built with the same features as the other B&M Holeshots, with the addition of anti-balloon plates. The anti-balloon plates will allow these converters to stand up to the instant horsepower nitrous delivers.
Product Features:
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Product Features:
- 2800-3200 RPM
- Small And Big Blocks
- Serious Performance
- Furnace Brazed
- Fully Balanced
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:
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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:
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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 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:
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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
FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1819)
from
$31.49
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
Product Features:
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Product Features:
- Felcoid/Plus gaskets have a fiber sheet core and a latex rubber coating to eliminate potential leakage paths. The core material resists crushing and splitting, while providing excellent blowout resistance.
- With steel core to provide ultimate excellent blowout resistance.
- Not intended for use in emission controlled vehicles.
FEL-PRO Performance – Engine Crankshaft Seal Kit (Part No.2912)
from
$37.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
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Product Features:
- Fluoroelastomer compound combines optimum resistance to heat, oils and abrasion for longevity.
- Optimizes performance under high crankcase vacuum conditions, elevated temperatures and high RPM levels.
- Not intended for use in emission controlled vehicles.
- Not intended for use in emission controlled vehicles.
FEL-PRO Performance – Performance Cylinder Head Gasket (Part No.1025)
from
$74.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.
Product Features:
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Product Features:
- Fel-Pro Performance head gaskets accommodate the high cylinder pressures and cylinder head movement associated with performance engines.
- Inserted within a stainless steel armor surrounding each cylinder, wire ring design provides highly concentrated sealing around the combustion chamber.
- Raises combustion sealing force to roughly three times that of standard head gaskets.
- Steel wire rings for the greatest combustion seal strength.
- Not intended for use in emission controlled vehicles.
Popular 1966 GMC G1000 Series Performance Engines Categories
Most Popular Performance Engine Cylinder Head Gasket for 1966 GMC G1000 Series
Enhance your 1966 GMC G1000 Series with this popular Performance Engine Cylinder Head Gasket we have in stock, for $74.99.
FEL-PRO Performance – Performance Cylinder Head Gasket (Part No.1025)
from
$74.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.
Product Features:
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Product Features:
- Fel-Pro Performance head gaskets accommodate the high cylinder pressures and cylinder head movement associated with performance engines.
- Inserted within a stainless steel armor surrounding each cylinder, wire ring design provides highly concentrated sealing around the combustion chamber.
- Raises combustion sealing force to roughly three times that of standard head gaskets.
- Steel wire rings for the greatest combustion seal strength.
- Not intended for use in emission controlled vehicles.
Best-Selling 1966 GMC G1000 Series Performance Engine Main Bearing Gasket Set
Upgrade your G1000 Series with our best-selling Performance Engine Main Bearing Gasket Set.
FEL-PRO Performance – Engine Crankshaft Seal Kit (Part No.2912)
from
$37.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
See More
Product Features:
- Fluoroelastomer compound combines optimum resistance to heat, oils and abrasion for longevity.
- Optimizes performance under high crankcase vacuum conditions, elevated temperatures and high RPM levels.
- Not intended for use in emission controlled vehicles.
- Not intended for use in emission controlled vehicles.
Top-Quality Performance Engine Oil Pan Gaskets for 1966 GMC G1000 Series
Choose a high-quality OEM or aftermarket Performance Engine Oil Pan Gasket for GMC G1000 Series and enjoy top-notch performance from $31.49.
FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1819)
from
$31.49
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
Product Features:
See More
Product Features:
- Felcoid/Plus gaskets have a fiber sheet core and a latex rubber coating to eliminate potential leakage paths. The core material resists crushing and splitting, while providing excellent blowout resistance.
- With steel core to provide ultimate excellent blowout resistance.
- Not intended for use in emission controlled vehicles.
Top Picks for 1966 GMC G1000 Series Performance Engine Coolant Thermostats
Invest in one of our 3 durable Performance Engine Coolant Thermostats for your 1966 GMC, knowing you’re getting trusted brands and expert craftsmanship.
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
Our Performance Engine Valve Cover Gasket Sets for 1966 GMC G1000 Series
Make a smart move for your 1966 GMC G1000 Series with our Performance Engine Valve Cover Gasket Set for $22.99.
FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1640)
from
$22.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
Product Features:
See More
Product Features:
- Blue Stripe performance cork-rubber gaskets use cork particles evenly distributed throughout a rubber binder resulting in a compressible gasket without leak paths.
- Not intended for use in emission controlled vehicles.
FAQs for 1966 GMC G1000 Series Performance Engines
What are the best-selling Performance Engines for 1966 GMC G1000 Series?
Out of 10 Performance Engines that fit 1966 GMC G1000 Series, the following parts are the top sellers:
- High Performance Thermostat (22903641) – $31.99
- Engine Valve Cover Gasket Set (19781133) – $22.99
- PERFORMANCE OIL PAN GASKET SET (19781547) – $31.49
What’s the price range for 1966 GMC G1000 Series Performance Engines?
The prices of Performance Engines for the 1966 GMC G1000 Series range from $15.99 up to $899.99 for the most premium parts.
What is the average price of a Performance Engine for a 1966 GMC G1000 Series?
The average price for Performance Engines for the 1966 GMC G1000 Series is $249.99. 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 GMC G1000 Series model years?
What are the cheapest Performance Engines for my 1966 GMC G1000 Series?
The cheapest 1966 GMC G1000 Series Performance Engines we carry are:
- Performance Series Solid Lifter for Cadillac, Chevrolet, Oldsmobile and Pontiac (50287860) – $15.99
- Engine Valve Cover Gasket Set (19781133) – $22.99
- High Performance Thermostat – 160 Degree Brass & Copper (17360031) – $29.49
- High Performance 180 Degree Thermostat for Increased Flow (17360033) – $29.99
- PERFORMANCE OIL PAN GASKET SET (19781547) – $31.49
Does Advance Auto Parts sell Performance Engines for any other 1966 GMC models?
Yes. We stock Performance Engines for 13 other popular 1966 GMC models. Some of the most popular are 1966 K15/K1500 Pickup Performance Engines, 1966 Suburban Performance Engines, 1966 PB1000 Series Performance Engines, 1966 I1500 Performance Engines, and 1966 PB15 Series Performance Engines.
What are the top-rated Performance Engines that fit the 1966 GMC G1000 Series?
The one 1966 GMC G1000 Series Performance Engine we have in stock is the Performance Series Solid Lifter for Cadillac, Chevrolet, Oldsmobile and Pontiac. It costs $15.99.
What types of Performance Engines do you sell for my 1966 GMC G1000 Series?
As of 11/2/25, these are some of the most in-demand types of Performance Engines for a 1966 GMC G1000 Series:
Can I get help with 1966 GMC G1000 Series Performance Engine orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about GMC Performance Engines and more.
What is your return policy for GMC G1000 Series Performance Engines?
Advance Auto Parts keeps returns simple. For new GMC G1000 Series Performance Engines and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.