Item #
63253
BRAND: BluePrint Engines
BluePrint Engines GM 396 ci. 491 HP Dressed Long Block Crate Engine BP3961CTC
396CI Stroker Crate Engine | Small Block GM Style | Dressed Longblock with Carburetor | Aluminum Heads | Roller Cam
396CI Stroker Crate Engine | Small Block GM Style | Dressed Longblock with Carburetor | Aluminum Heads | Roller Cam
396CI Stroker Crate Engine | Small Block GM Style | Dressed Longblock with Carburetor | Aluminum Heads | Roller Cam
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Product Overview:
Description
- HP and Torque: 491 HP / 509 FT LBS
- Compression Ratio: 10.4:1
- Aluminum Heads
- Hydraulic Roller Cam
- Forged Crank
- Forged Pistons
Block:
- NEW BluePrint 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
- 230 Intake / 236 Exhaust duration
- @ .050, 110 degrees lobe separation angle
Ignition Timing
- 34 degreess total at 3500 RPM
Notes
- Not for use in pollution controlled vehicles.
- The Aftermarket intake manifold installed on this engine may not be compatible with OEM accessory brackets that use intake mounted bosses.
- This engine features a true 4-inch bore, which mathematically yields 389 CID with a 3.875-inch stroke
Warranty
Click here for warranty information
Specifications
RECOMMENDATIONS
Your BluePrint engine was dyno tested with the parts and specifications listed below. If you prefer to install a different part, your engine may not produce the horsepower recorded on your dyno sheet.
- Part Number: BP3961CTC
- Fuel Delivery Type: Carbureted, 850cfm, manual choke
- Spark Plug: BPP7938 NGK 7938 BKR5E
- Spark Plug Gap: .035"
- Harmonic Balancer: BPP350 - Non Weighted, 8" diameter
- Flexplate/Flywheel: Late 350 Weighted
- Stall Converter: 2000-2400 rpm
- Intake Manifold: Dual plane, satin aluminum
- Fuel Recommendation: 91 Octane
- Timing (Initial/Total Advance): Initial timing - 10-16° and Total timing 32-34°
- Firing Order: 1,8,4,3,6,5,7,2
- Notes: Recommended break in oil for your BluePrint Crate Engine:BPP710, Not for EGR
In the Box
Contents
- New valve covers, oil pan and timing cover
- Aluminum Intake Manifold
- HEI distributor
- 850cfm Carburetor
- Dyno test results shipped with engine
Guides & Accessories
Instructions
Reviews
Questions & Answers

BluePrint Engines GM 396 ci. 491 HP Dressed Long Block Crate Engine BP3961CTC
$7,849.00
In Stock