Parts intended for competition use
Proposition 65
Classic Small-Block Strokers
Classic Small-Block Strokers
Parts intended for competition use
Proposition 65
Up to
450 hp
Horsepower
Up to
455 lb.-ft.
Up to
6,000
Max Recommended RPM
Up to
383 cu. in. (6.3L)
Displacement
383 Engines
-
HT383
Serious pulling power for the non-stock truck rebuild.
View HT383
Serious pulling power for the non-stock truck rebuild.
View HT383
Tech Specs
Performance
Horsepower:
323 hp @ 4,200 rpm
Torque:
444 lb.-ft. @ 3,000 rpm
Max Rec RPM:
5,000
Internal Components
Crankshaft:
4340 forged steel; includes 4X crankshaft position sensor
Connecting Rods:
Heavy-duty forged steel
Pistons:
Hypereutectic aluminum
Intake Manifold:
Dual plane aluminum
Camshaft Type:
Hydraulic roller
Rocker Arms:
Stamped steel
Engine Basics
Part Number:
19433036
Engine Type:
Chevy Small-Block V-8
Displacement:
383 cu. in. (6.3L)
Block:
Cast iron with 4-bolt main caps
Balanced:
External
Measurements
Bore x Stroke:
4.005 in. x 3.800 in.
Valve Lift (in):
.431 intake / .451 exhaust
Camshaft Duration (@.050 in):
196° intake / 206° exhaust
Compression Ratio:
9.1:1
Rocker Arm Ratio:
1.5:1
Cylinder Head and Valves
Cylinder Heads:
Vortec iron; 62cc chambers
Valve Size (in.):
1.940 intake / 1.500 exhaust
Water Pump:
Cast iron
Fuel and Ignition
Ignition Timing:
32° Total @ 4,000 rpm
Flexplate:
12.750”
Recommended Fuel:
Regular pump
Show Less
Tech Specs
Performance
Horsepower:
323 hp @ 4,200 rpm
Torque:
444 lb.-ft. @ 3,000 rpm
Max Rec RPM:
5,000
Engine Basics
Part Number:
19433036
Engine Type:
Chevy Small-Block V-8
Displacement:
383 cu. in. (6.3L)
Block:
Cast iron with 4-bolt main caps
Balanced:
External
Measurements
Bore x Stroke:
4.005 in. x 3.800 in.
Valve Lift (in):
.431 intake / .451 exhaust
Camshaft Duration (@.050 in):
196° intake / 206° exhaust
Compression Ratio:
9.1:1
Rocker Arm Ratio:
1.5:1
Internal Components
Crankshaft:
4340 forged steel; includes 4X crankshaft position sensor
Connecting Rods:
Heavy-duty forged steel
Pistons:
Hypereutectic aluminum
Intake Manifold:
Dual plane aluminum
Camshaft Type:
Hydraulic roller
Rocker Arms:
Stamped steel
Cylinder Head and Valves
Cylinder Heads:
Vortec iron; 62cc chambers
Valve Size (in.):
1.940 intake / 1.500 exhaust
Water Pump:
Cast iron
Fuel and Ignition
Ignition Timing:
32° Total @ 4,000 rpm
Flexplate:
12.750”
Recommended Fuel:
Regular pump
-
HT383E
Bigger is better — the high torque bolt-in engine for half-ton trucks.
View HT383E
Bigger is better — the high torque bolt-in engine for half-ton trucks.
View HT383E
Tech Specs
Performance
Horsepower:
323 hp @ 4,200 rpm
Torque:
444 lb.-ft. @ 3,000 rpm
Max Rec RPM:
5,000
Internal Components
Crankshaft:
4340 forged steel; includes 4X crankshaft position sensor
Connecting Rods:
Heavy-duty forged steel
Pistons:
Hypereutectic aluminum
Camshaft Type:
Hydraulic roller
Rocker Arms:
Stamped steel
Engine Basics
Part Number:
19435449
Engine Type:
Chevy Small-Block V-8
Displacement:
383 cu. in. (6.3L)
Block:
Cast iron with 4-bolt main caps
Balanced:
External
Measurements
Bore x Stroke:
4.005 in. x 3.800 in.
Valve Lift (in):
.431 intake / .451 exhaust
Camshaft Duration (@.050 in):
196° intake / 206° exhaust
Compression Ratio:
9.4:1
Rocker Arm Ratio:
1.5:1
Cylinder Head and Valves
Cylinder Heads:
Vortec iron; 62cc chambers
Valve Size (in.):
1.940 intake / 1.500 exhaust
Water Pump:
Cast iron
Fuel and Ignition
Flexplate:
12.750”
Recommended Fuel:
Regular pump
Show Less
Tech Specs
Performance
Horsepower:
323 hp @ 4,200 rpm
Torque:
444 lb.-ft. @ 3,000 rpm
Max Rec RPM:
5,000
Engine Basics
Part Number:
19435449
Engine Type:
Chevy Small-Block V-8
Displacement:
383 cu. in. (6.3L)
Block:
Cast iron with 4-bolt main caps
Balanced:
External
Measurements
Bore x Stroke:
4.005 in. x 3.800 in.
Valve Lift (in):
.431 intake / .451 exhaust
Camshaft Duration (@.050 in):
196° intake / 206° exhaust
Compression Ratio:
9.4:1
Rocker Arm Ratio:
1.5:1
Internal Components
Crankshaft:
4340 forged steel; includes 4X crankshaft position sensor
Connecting Rods:
Heavy-duty forged steel
Pistons:
Hypereutectic aluminum
Camshaft Type:
Hydraulic roller
Rocker Arms:
Stamped steel
Cylinder Head and Valves
Cylinder Heads:
Vortec iron; 62cc chambers
Valve Size (in.):
1.940 intake / 1.500 exhaust
Water Pump:
Cast iron
Fuel and Ignition
Flexplate:
12.750”
Recommended Fuel:
Regular pump
-
SP383 Turnkey
Rev higher and haul harder — expanded RPM range and horsepower.
View SP383 Turnkey
Rev higher and haul harder — expanded RPM range and horsepower.
View SP383 Turnkey
Tech Specs
Performance
Horsepower:
435 hp @ 5,600 rpm
Torque:
445 lb.-ft. @ 4,600 rpm
Max Rec RPM:
6,000
Internal Components
Crankshaft:
Forged steel
Connecting Rods:
Heavy-duty forged steel
Pistons:
Hypereutectic aluminum
Intake Manifold:
Single-plane aluminum
Camshaft Type:
Hydraulic roller
Rocker Arms:
Aluminum roller style
Engine Basics
Part Number:
19435452
Engine Type:
Chevy Small-Block V-8
Displacement:
383 cu. in. (6.3L)
Block:
Cast iron with 4-bolt main caps
Balanced:
External
Measurements
Bore x Stroke:
4.005 in. x 3.800 in.
Valve Lift (in):
.509 intake / .528 exhaust
Camshaft Duration (@.050 in):
222° intake / 230° exhaust
Compression Ratio:
9.72:1
Rocker Arm Ratio:
1.5:1
Cylinder Head and Valves
Cylinder Heads:
Fast Burn aluminum; 62cc chambers
Valve Size (in.):
2.000 intake / 1.550 exhaust
Fuel and Ignition
Ignition Timing:
36° Total @ 4,000 rpm
Flexplate:
12.750”
Recommended Fuel:
Premium pump
Show Less
Tech Specs
Performance
Horsepower:
435 hp @ 5,600 rpm
Torque:
445 lb.-ft. @ 4,600 rpm
Max Rec RPM:
6,000
Engine Basics
Part Number:
19435452
Engine Type:
Chevy Small-Block V-8
Displacement:
383 cu. in. (6.3L)
Block:
Cast iron with 4-bolt main caps
Balanced:
External
Measurements
Bore x Stroke:
4.005 in. x 3.800 in.
Valve Lift (in):
.509 intake / .528 exhaust
Camshaft Duration (@.050 in):
222° intake / 230° exhaust
Compression Ratio:
9.72:1
Rocker Arm Ratio:
1.5:1
Internal Components
Crankshaft:
Forged steel
Connecting Rods:
Heavy-duty forged steel
Pistons:
Hypereutectic aluminum
Intake Manifold:
Single-plane aluminum
Camshaft Type:
Hydraulic roller
Rocker Arms:
Aluminum roller style
Cylinder Head and Valves
Cylinder Heads:
Fast Burn aluminum; 62cc chambers
Valve Size (in.):
2.000 intake / 1.550 exhaust
Fuel and Ignition
Ignition Timing:
36° Total @ 4,000 rpm
Flexplate:
12.750”
Recommended Fuel:
Premium pump
-
SP383 EFI Turnkey
Classic performance paired with Fast Burn cylinder heads and EFI.
Tech Specs
Performance
Horsepower:
450 hp @ 5,800 rpm
Torque:
436 lb.-ft. @ 4,800 rpm
Max Rec RPM:
6,000
Internal Components
Crankshaft:
Forged steel
Connecting Rods:
Heavy-duty forged steel
Pistons:
Hypereutectic aluminum
Camshaft Type:
Steel hydraulic roller
Rocker Arms:
Aluminum roller style
Engine Basics
Part Number:
19433046
Engine Type:
Chevy Small-Block V-8
Displacement:
383 cu. in. (6.3L)
Block:
Cast iron with 4-bolt main caps
Balanced:
External
Measurements
Bore x Stroke:
4.005 in. x 3.800 in.
Valve Lift (in):
.509 intake / .528 exhaust
Camshaft Duration (@.050 in):
220° intake / 230° exhaust
Compression Ratio:
9.9:1 (nominal)
Rocker Arm Ratio:
1.5:1
Cylinder Head and Valves
Cylinder Heads:
Fast Burn aluminum; 62cc chambers
Valve Size (in.):
2.000 intake / 1.550 exhaust
Fuel and Ignition
Ignition Timing:
36° Total @ 4,000 rpm
Flexplate:
12.750”
Recommended Fuel:
Premium pump
Show Less
Tech Specs
Performance
Horsepower:
450 hp @ 5,800 rpm
Torque:
436 lb.-ft. @ 4,800 rpm
Max Rec RPM:
6,000
Engine Basics