GM ENGINES

Active Engines offers pre-designed GM engine configurations for the following:

350/330 HP 383/360 HP 383/425 HP 454/450 HP 496/530 HP 572/620 HP
GM 350/330 HP  Back to top
Item Description
Engine Type GM small block
Bore X Stroke 4.00 X 3.48
Engine Displacement 350
Block Cast 4-bolt main
Crankshaft Nodular iron
Connecting Rods Powdered metal steel
Piston Cast aluminum
Camshaft Type Hydraulic flat ttappet
Camshaft Lift .464/.470
Camshaft Duration 218/224
Valve lash  
Cylinder Heads Vortec iron; 64 CC
Valve Size 1.94/1.50
Compression Ratio 9.1:1
Rocker Arms Stamped steel
Rocker Ratio 1.5:1
Balancer External
Flywheel External
Ignition Timing 36BTDC@4500
Recommended Fuel 87
Oil Capacity 5 quarts
Peak Horsepower 330
Peak Torque 380
Max RPM 5500
Part # GMS350330
GM 383/360 HP  Back to top
Item Description
Engine Type GM small block
Bore X Stroke 4.00 X 3.80
Engine Displacement 383
Block Cast 4-bolt main
Crankshaft Eagle powder coated
Connecting Rods ARP
Piston Keith Black hypeuticnic
Camshaft Type Hydraulic roller
Camshaft Lift .458/.451
Camshaft Duration At .050 206/210
Valve lash  
Cylinder Heads GM Vortec iron; 64 CC
Valve Size 1.94/1.50
Compression Ratio 9.1:1
Rocker Arms Stamped steel
Rocker Ratio 1.5:1
Balancer External
Flywheel External
Ignition Timing 34@4500RPM
Recommended Fuel 87
Oil Capacity 5 quarts
Peak Horsepower 360
Peak Torque 435
Max RPM 5000
Part # GMS350330
GM 383/425 HP  Back to top
Item Description
Engine Type GM small block
Bore X Stroke 4.00 X 3.80
Engine Displacement 383
Block Cast 4-bolt main
Crankshaft Forged steel
Connecting Rods Heavy-duty PM steel
Piston Cast aluminum
Camshaft Type Hydraulic roller
Camshaft Lift .535/.544
Camshaft Duration At .050 224/280
Valve lash  
Cylinder Heads AFR 180 CC
Valve Size 2.02/1.60
Compression Ratio 10.0:1
Rocker Arms Auminum roller
Rocker Ratio 1.6:1
Balancer External
Flywheel External
Ignition Timing 36@4000RPM
Recommended Fuel 92
Oil Capacity 5 quarts
Peak Horsepower 425
Peak Torque 435
Max RPM 6000
Part # GMS383425
GM 454/450 HP  Back to top
Item Description
Engine Type GM big block
Bore X Stroke 4.25 X 4.00
Engine Displacement 454
Block Cast 4-bolt main
Crankshaft Eagle ESP cast steel
Connecting Rods Eagle
Piston Forged aluminum
Camshaft Type Hydraulic roller
Camshaft Lift .510/.510
Camshaft Duration 224/230
Valve lash 2.19/1.88
Cylinder Heads Edelbrock 118CC
Valve Size 2.19/1.88
Compression Ratio 10.0:1
Rocker Arms Stamped steel
Rocker Ratio 1.7:1
Balancer External
Flywheel External
Ignition Timing 36BTDC
Recommended Fuel 87
Oil Capacity 5 quarts
Peak Horsepower 425
Peak Torque 500
Max RPM 5500
Part # GMB454425
GM 496/530 HP  Back to top
Item Description
Engine Type GM big block
Bore X Stroke 4.25 X 4.25
Engine Displacement 496
Block Cast 4-bolt main
Crankshaft Eagle
Connecting Rods Eagle I-Beam
Piston Forged aluminum
Camshaft Type Crane hydraulic roller
Camshaft Lift .610/.632
Camshaft Duration AT .050 236/244
Valve lash  
Cylinder Heads Aluminum round port 110CC
Valve Size 2.25/1.88
Compression Ratio 10.0:1
Rocker Arms Crane gold race
Rocker Ratio 1.7:1
Balancer External
Flywheel External
Ignition Timing 36BTDC
Recommended Fuel 92
Oil Capacity 7 quarts
Peak Horsepower 530
Peak Torque 590
Max RPM 5500
Part # GMB496590
GM 572/620 HP  Back to top
Item Description
Engine Type GM big block
Bore X Stroke 4.500 X 4.500
Engine Displacement 572
Block Merlin 3-cast 4-bolt main
Crankshaft Eagle forged steel
Connecting Rods Eagle I-Beam
Piston Forged aluminum
Camshaft Type Hydraulic roller
Camshaft Lift .632/.632
Camshaft Duration AT .050 243/264
Valve lash  
Cylinder Heads Edelbrock 2190 118CC
Valve Size 2.25/1.88
Compression Ratio 10.0:1
Rocker Arms Aluminum roller style
Rocker Ratio 1.7:1
Balancer External
Flywheel External
Ignition Timing 36@5000
Recommended Fuel 92
Oil Capacity 7 quarts
Peak Horsepower 620
Peak Torque 650
Max RPM 6000
Part # GMB572620