Shop Best Upgrade Engine for a 1981 Corvette

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$13,399.00
GM Big Block Compatible 502 C.I. Pro Series Engine - 627 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$13,399.00
GM Big Block Compatible 502 C.I. Pro Series Engine - 627 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$28,999.00
GM Big Block Compatible 632 C.I. Pro Series Engine - 1000 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$28,999.00
GM Big Block Compatible 632 C.I. Pro Series Engine - 1000 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$6,799.00
GM Small Block 350 C.I. Engine - 341 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$6,799.00
GM Small Block 350 C.I. Engine - 341 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$9,299.00
GM Small Block Compatible 383 C.I. Low Profile Engine - 436 Horsepower - Deluxe Dressed - Fuel Injected
American Powertrain
$9,299.00
GM Small Block Compatible 383 C.I. Low Profile Engine - 436 Horsepower - Deluxe Dressed - Fuel Injected
American Powertrain
$15,799.00
GM Big Block Compatible 572 C.I. Pro Series Engine - 750 Horsepower - Base Dressed - Carbureted
American Powertrain
$15,799.00
GM Big Block Compatible 572 C.I. Pro Series Engine - 750 Horsepower - Base Dressed - Carbureted
American Powertrain
$630.99
$999.79
1981 Chevrolet Corvette 5.7L V8 16V OHV Engine Rebuild Kit EK3102DM For VIN 6 16V OHV
PartsOlogy
36% off
$630.99
$999.79
1981 Chevrolet Corvette 5.7L V8 16V OHV Engine Rebuild Kit EK3102DM For VIN 6 16V OHV
PartsOlogy
$19,999.00
GM Big Block Compatible 632 C.I. Pro Series Engine - 815 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$19,999.00
GM Big Block Compatible 632 C.I. Pro Series Engine - 815 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$23,699.00
GM LS Compatible 427 C.I. Pro Series Engine - 800 Horsepower - Base Dressed - Holley Terminator X EFI System
American Powertrain
$23,699.00
GM LS Compatible 427 C.I. Pro Series Engine - 800 Horsepower - Base Dressed - Holley Terminator X EFI System
American Powertrain
$15,199.00
GM Big Block Compatible 598 C.I. Pro Series Engine - 741 Horsepower - Base Dressed - Carbureted
American Powertrain
$15,199.00
GM Big Block Compatible 598 C.I. Pro Series Engine - 741 Horsepower - Base Dressed - Carbureted
American Powertrain
$7,599.00
Blueprint Engines GM Small Block Compatible 400 C.I. Engine - 500 HP - Long Block
Amazon.com
1
$7,599.00
Blueprint Engines GM Small Block Compatible 400 C.I. Engine - 500 HP - Long Block
Amazon.com
$133.99
AJP Distributors Tri Core 3-Row Full Aluminum Radiator Engine Motor Cooling Upgrade Compatible/Replacement For Corvette C3 Vette 5.0L 5.7L V8 MT 1977
Amazon.com
Free shipping
$133.99
AJP Distributors Tri Core 3-Row Full Aluminum Radiator Engine Motor Cooling Upgrade Compatible/Replacement For Corvette C3 Vette 5.0L 5.7L V8 MT 1977
Amazon.com
$12,399.00
GM Big Block Compatible 502 C.I. Pro Series Engine - 627 Horsepower - Base Dressed - Carbureted
American Powertrain
$12,399.00
GM Big Block Compatible 502 C.I. Pro Series Engine - 627 Horsepower - Base Dressed - Carbureted
American Powertrain
$95.99
High Performance Parts Short Ram Air Intake Kit & Blue Filter Combo Compatible For 2001-2004 Chevy Corvette C5 5.7L V8 Engine (With 2 Filters)
Amazon.com
Free shipping
$95.99
High Performance Parts Short Ram Air Intake Kit & Blue Filter Combo Compatible For 2001-2004 Chevy Corvette C5 5.7L V8 Engine (With 2 Filters)
Amazon.com
$466.99
$738.73
1981 Chevrolet Corvette 5.7L V8 16V OHV Engine Rebuild Kit EK3102D For VIN 6 16V OHV
PartsOlogy
36% off
$466.99
$738.73
1981 Chevrolet Corvette 5.7L V8 16V OHV Engine Rebuild Kit EK3102D For VIN 6 16V OHV
PartsOlogy
$29,899.00
GM Big Block Compatible 632 C.I. Pro Series Engine - 1015 Horsepower - Base Dressed - Carbureted
American Powertrain
$29,899.00
GM Big Block Compatible 632 C.I. Pro Series Engine - 1015 Horsepower - Base Dressed - Carbureted
American Powertrain
$15,599.00
GM LS Compatible 427 C.I. Pro Series Engine - 605 Horsepower - Base Dressed - Holley Terminator X EFI System
American Powertrain
$15,599.00
GM LS Compatible 427 C.I. Pro Series Engine - 605 Horsepower - Base Dressed - Holley Terminator X EFI System
American Powertrain
$11,399.00
Blueprint Engines GM 383 Fuel Injected Crate Engine Deluxe Dressed Low-Profile 436 HP W/ Polished Pulley Kit
Classic Muscle Parts
Free shipping
$11,399.00
Blueprint Engines GM 383 Fuel Injected Crate Engine Deluxe Dressed Low-Profile 436 HP W/ Polished Pulley Kit
Classic Muscle Parts
$14,599.00
GM LS Compatible 427 C.I. Pro Series Engine - 585 Horsepower - Base Dressed - Holley Terminator X EFI System
American Powertrain
$14,599.00
GM LS Compatible 427 C.I. Pro Series Engine - 585 Horsepower - Base Dressed - Holley Terminator X EFI System
American Powertrain
$8,399.00
Blueprint Engines GM 383 Crate Engine Fuel Injected Deluxe Dressed 436 HP
Classic Muscle Parts
Free shipping
$8,399.00
Blueprint Engines GM 383 Crate Engine Fuel Injected Deluxe Dressed 436 HP
Classic Muscle Parts
$14,599.00
GM LS Compatible 427 C.I. Pro Series Engine - 600 Horsepower - Base Dressed - Holley Terminator X EFI System
American Powertrain
$14,599.00
GM LS Compatible 427 C.I. Pro Series Engine - 600 Horsepower - Base Dressed - Holley Terminator X EFI System
American Powertrain
$29.99
Mechanical Fuel Pump Compatible With 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 Chevrolet Corvette V8 5.0L 5.7L SP1060MP
Amazon.com
$29.99
Mechanical Fuel Pump Compatible With 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 Chevrolet Corvette V8 5.0L 5.7L SP1060MP
Amazon.com
$279.00
3 Row Radiator Shroud Fan Relay For 1977 1978 1979 1980 1981 1982 Chevy Corvette C3 5.0L 5.7L 350 V8, Replacement Radiator, Aluminum Radiator,
Amazon.com
Free shipping
$279.00
3 Row Radiator Shroud Fan Relay For 1977 1978 1979 1980 1981 1982 Chevy Corvette C3 5.0L 5.7L 350 V8, Replacement Radiator, Aluminum Radiator,
Amazon.com
$10,299.00
GM Big Block Compatible 454 C.I. Engine - 460 Horsepower - Base Dressed - Carbureted
American Powertrain
$10,299.00
GM Big Block Compatible 454 C.I. Engine - 460 Horsepower - Base Dressed - Carbureted
American Powertrain
$5,899.00
GM Small Block 350 C.I. Engine - 390 Horsepower - Base Dressed - Carbureted
American Powertrain
$5,899.00
GM Small Block 350 C.I. Engine - 390 Horsepower - Base Dressed - Carbureted
American Powertrain
$12,399.00
Blueprint Motorsports GM LS Compatible 427 C.I. Pro Series Engine - Power Adder - Long Block
American Powertrain
$12,399.00
Blueprint Motorsports GM LS Compatible 427 C.I. Pro Series Engine - Power Adder - Long Block
American Powertrain
$8,199.00
GM Small Block Compatible 383 C.I. Low Profile Engine - 436 Horsepower - Deluxe Dressed - Carbureted
American Powertrain
$8,199.00
GM Small Block Compatible 383 C.I. Low Profile Engine - 436 Horsepower - Deluxe Dressed - Carbureted
American Powertrain
$11,199.00
GM Small Block Compatible 427 C.I. Proseries Engine - 540 Horsepower - Base Dressed - Carbureted
American Powertrain
$11,199.00
GM Small Block Compatible 427 C.I. Proseries Engine - 540 Horsepower - Base Dressed - Carbureted
American Powertrain
$16,399.00
GM Big Block Compatible 632 C.I. Pro Series Engine - 815 Horsepower - Long Block
American Powertrain
$16,399.00
GM Big Block Compatible 632 C.I. Pro Series Engine - 815 Horsepower - Long Block
American Powertrain
$6,199.00
GM Small Block Compatible 350 C.I. Engine - 341 Horsepower - Deluxe Dressed - Carbureted
American Powertrain
$6,199.00
GM Small Block Compatible 350 C.I. Engine - 341 Horsepower - Deluxe Dressed - Carbureted
American Powertrain
$19,799.00
Blueprint Engines Motorsports Pro Series GM 632 Big-Block Crate Engine Carb Deluxe Dressed 815 HP W/ Polished Pulley Kit
Classic Muscle Parts
Free shipping
$19,799.00
Blueprint Engines Motorsports Pro Series GM 632 Big-Block Crate Engine Carb Deluxe Dressed 815 HP W/ Polished Pulley Kit
Classic Muscle Parts
$10,399.00
Blueprint Engines GM 383 Fuel Injected Crate Engine Deluxe Dressed 436 HP W/ Black Pulley Kit
Classic Muscle Parts
1
Free shipping
$10,399.00
Blueprint Engines GM 383 Fuel Injected Crate Engine Deluxe Dressed 436 HP W/ Black Pulley Kit
Classic Muscle Parts
$66,873.99
Speedway Motors Custom Aluminum 410 Chevy Sprint Car Engine
Speedway Motors
$66,873.99
Speedway Motors Custom Aluminum 410 Chevy Sprint Car Engine
Speedway Motors
$33.73
US Motor Works Chevrolet Corvette Heavy Duty Applications 1957-1960 1962-1981 | USEP8012SP
AutoNation Parts
$33.73
US Motor Works Chevrolet Corvette Heavy Duty Applications 1957-1960 1962-1981 | USEP8012SP
AutoNation Parts
$344.02
1965-1968, 1974, 1976-1978, 1981-1982, 1984-1991 Chevrolet Corvette Intake Manifold Autopart Premium 65-68, 74, 76-78, 81-82, 84-91 Chevrolet Intake Manifold
Parts Geek
$344.02
1965-1968, 1974, 1976-1978, 1981-1982, 1984-1991 Chevrolet Corvette Intake Manifold Autopart Premium 65-68, 74, 76-78, 81-82, 84-91 Chevrolet Intake Manifold
Parts Geek
$11,599.00
GM Small Block 327 C.I. Engine - 350 Horsepower - Deluxe Dressed - Polished Pulley Kit - Fuel Injected
American Powertrain
$11,599.00
GM Small Block 327 C.I. Engine - 350 Horsepower - Deluxe Dressed - Polished Pulley Kit - Fuel Injected
American Powertrain
$10,762.99
Speedway Motors Stage 2 IMCA Stock Car 360 Spec Engine
Speedway Motors
$10,762.99
Speedway Motors Stage 2 IMCA Stock Car 360 Spec Engine
Speedway Motors
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Shop Best Upgrade Engine for a 1981 Corvette

Sponsored
About our ads
$13,399.00
GM Big Block Compatible 502 C.I. Pro Series Engine - 627 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$13,399.00
GM Big Block Compatible 502 C.I. Pro Series Engine - 627 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$28,999.00
GM Big Block Compatible 632 C.I. Pro Series Engine - 1000 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$28,999.00
GM Big Block Compatible 632 C.I. Pro Series Engine - 1000 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$6,799.00
GM Small Block 350 C.I. Engine - 341 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$6,799.00
GM Small Block 350 C.I. Engine - 341 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$9,299.00
GM Small Block Compatible 383 C.I. Low Profile Engine - 436 Horsepower - Deluxe Dressed - Fuel Injected
American Powertrain
$9,299.00
GM Small Block Compatible 383 C.I. Low Profile Engine - 436 Horsepower - Deluxe Dressed - Fuel Injected
American Powertrain
$15,799.00
GM Big Block Compatible 572 C.I. Pro Series Engine - 750 Horsepower - Base Dressed - Carbureted
American Powertrain
$15,799.00
GM Big Block Compatible 572 C.I. Pro Series Engine - 750 Horsepower - Base Dressed - Carbureted
American Powertrain
$630.99
$999.79
1981 Chevrolet Corvette 5.7L V8 16V OHV Engine Rebuild Kit EK3102DM For VIN 6 16V OHV
PartsOlogy
36% off
$630.99
$999.79
1981 Chevrolet Corvette 5.7L V8 16V OHV Engine Rebuild Kit EK3102DM For VIN 6 16V OHV
PartsOlogy
$19,999.00
GM Big Block Compatible 632 C.I. Pro Series Engine - 815 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$19,999.00
GM Big Block Compatible 632 C.I. Pro Series Engine - 815 Horsepower - Base Dressed - Fuel Injected
American Powertrain
$23,699.00
GM LS Compatible 427 C.I. Pro Series Engine - 800 Horsepower - Base Dressed - Holley Terminator X EFI System
American Powertrain
$23,699.00
GM LS Compatible 427 C.I. Pro Series Engine - 800 Horsepower - Base Dressed - Holley Terminator X EFI System
American Powertrain
$15,199.00
GM Big Block Compatible 598 C.I. Pro Series Engine - 741 Horsepower - Base Dressed - Carbureted
American Powertrain
$15,199.00
GM Big Block Compatible 598 C.I. Pro Series Engine - 741 Horsepower - Base Dressed - Carbureted
American Powertrain
$7,599.00
Blueprint Engines GM Small Block Compatible 400 C.I. Engine - 500 HP - Long Block
Amazon.com
1
$7,599.00
Blueprint Engines GM Small Block Compatible 400 C.I. Engine - 500 HP - Long Block
Amazon.com
$133.99
AJP Distributors Tri Core 3-Row Full Aluminum Radiator Engine Motor Cooling Upgrade Compatible/Replacement For Corvette C3 Vette 5.0L 5.7L V8 MT 1977
Amazon.com
Free shipping
$133.99
AJP Distributors Tri Core 3-Row Full Aluminum Radiator Engine Motor Cooling Upgrade Compatible/Replacement For Corvette C3 Vette 5.0L 5.7L V8 MT 1977
Amazon.com
$12,399.00
GM Big Block Compatible 502 C.I. Pro Series Engine - 627 Horsepower - Base Dressed - Carbureted
American Powertrain
$12,399.00
GM Big Block Compatible 502 C.I. Pro Series Engine - 627 Horsepower - Base Dressed - Carbureted
American Powertrain
$95.99
High Performance Parts Short Ram Air Intake Kit & Blue Filter Combo Compatible For 2001-2004 Chevy Corvette C5 5.7L V8 Engine (With 2 Filters)
Amazon.com
Free shipping
$95.99
High Performance Parts Short Ram Air Intake Kit & Blue Filter Combo Compatible For 2001-2004 Chevy Corvette C5 5.7L V8 Engine (With 2 Filters)
Amazon.com
$466.99
$738.73
1981 Chevrolet Corvette 5.7L V8 16V OHV Engine Rebuild Kit EK3102D For VIN 6 16V OHV
PartsOlogy
36% off
$466.99
$738.73
1981 Chevrolet Corvette 5.7L V8 16V OHV Engine Rebuild Kit EK3102D For VIN 6 16V OHV
PartsOlogy
$29,899.00
GM Big Block Compatible 632 C.I. Pro Series Engine - 1015 Horsepower - Base Dressed - Carbureted
American Powertrain
$29,899.00
GM Big Block Compatible 632 C.I. Pro Series Engine - 1015 Horsepower - Base Dressed - Carbureted
American Powertrain
$15,599.00
GM LS Compatible 427 C.I. Pro Series Engine - 605 Horsepower - Base Dressed - Holley Terminator X EFI System
American Powertrain
$15,599.00
GM LS Compatible 427 C.I. Pro Series Engine - 605 Horsepower - Base Dressed - Holley Terminator X EFI System
American Powertrain
$11,399.00
Blueprint Engines GM 383 Fuel Injected Crate Engine Deluxe Dressed Low-Profile 436 HP W/ Polished Pulley Kit
Classic Muscle Parts
Free shipping
$11,399.00
Blueprint Engines GM 383 Fuel Injected Crate Engine Deluxe Dressed Low-Profile 436 HP W/ Polished Pulley Kit
Classic Muscle Parts
$14,599.00
GM LS Compatible 427 C.I. Pro Series Engine - 585 Horsepower - Base Dressed - Holley Terminator X EFI System
American Powertrain
$14,599.00
GM LS Compatible 427 C.I. Pro Series Engine - 585 Horsepower - Base Dressed - Holley Terminator X EFI System
American Powertrain