BP3961CT Small Block Crate Engine by BluePrint Engines 396 CI 491 HP GM Style Longblock Aluminum Heads Roller Cam

BluePrint GM engines give you brute, honest horsepower that'll leave others in your rear view mirror. Produced new four-bolt main blocks and precision built to exacting specifications.

Specifications:
HP & Torque: 491 HP / 509 FT LBS
Compression Ratio: 10.4:1
Aluminum Heads
Forged Pistons
Roller Cam
Forged Crank
Recommended Fuel: 91 Octane

Block:
4 bolt main, small block
1pc rear seal block w/Passenger side dipstick only
Square and parallel decked
Align honed main bearing bore
Cylinders honed on computer controlled machine to within .0002 straightness and roundness
Cylinders are sonic tested for thickness

Rotating Assembly:
New forged steel crankshaft
New forged pistons and connecting rods

Cylinder Heads:
BluePrint Performance aluminium HP8103
64cc
2.08" Intake / 1.60" Exhaust valves
220cc Intake / 67cc Exhaust Runners

Cam Specs:
Cam Type: Roller
.544 Intake .555 Exhaust
230 Intake / 236 Exhaust duration @ .050

Ignition Timing:
34 degrees at 3500 RPM

Also Includes:
Valve covers, oil pan and timing cover

Dyno tested and shipped with results

Notes:
*A bronze distributor gear is NOT recommended on this engine
93 or higher octane is recommended for this engine

Not for use in pollution controlled vehicles.