BP3961CT BluePrint Engines 396 c.i SB Longblock BluePrint Engines 396 c.i. Small Block GM style engine - longblock. incl. 30 month / 50,000 warranty & Dyno Part #: BP3961CT.
Description:
- Horsepower & Torque: 491 Horsepower / 509 FT. LBS. Torque
- Compression Ratio: 10.4:1
- Aluminum Heads
- Hydraulic Roller Cam
- Forged Crank
- Forged Pistons
Block:
- BluePrint Engines High Strength Cast Iron Block
- Manufactured and Machined in the USA!
- Align Honed Main Bearing Bore
- Cylinders Honed on Computer-Controlled Machine to Within .0002 Straightness and Roundness
- Cylinders are Sonic Tested for Thickness
- 4-Bolt Main
- 4.000" Bore
- 1-Piece Rear Main Seal
- Mech Fuel Pump Provision: Yes
- Passenger Side Dipstick
- Drilled and Tapped for Clutch Linkage
Rotating Assembly:
- New BluePrint Forged Crankshaft
- 3.875 " Stroke
- Forged I-beam 6.000" Connecting Rods
- Forged Pistons
- Internal Front / External Rear
Cylinder Heads:
- BluePrint Aluminum Cylinder Heads - HP8103
- 64cc Chamber
- 2.08" Intake / 1.60" Exhaust Valves
- 220cc Intake / 67cc Exhaust Runners
Cam Specs:
- Cam Type: Roller
- .544 Intake / .555 Exhaust Lift
- 230 Intake / 236 Exhaust Duration
- @ .050, 110 Degree Lobe Separation
Ignition Timing:
- 34 Degrees Total at 3500 RPM
Also includes:
- Valve Covers
- Oil Pan
- Timing Cover
Notes:
- Not for use in pollution-controlled vehicles.
- This engine features a true 4-inch bore, which mathematically yields 389 CID with a 3.875-inch stroke.
- 93 octane or higher is recommended for this engine.
- The performance aluminum cylinder heads on this engine feature a .500 raised port vs OEM.
*A bronze distributor gear is NOT recommended on this engine