Product Summary
350, 395, Long Block Crate Engine Type
- BluePrint Pro Engine Builders: Enthusiast builders focused on quality and performance.
- Dyno Tested: Every BluePrint crate engine meticulously tested with proven results.
- GM 396 SBC Base Engine: Aluminum Heads, Roller Cam, 491 HP / 509 FT LBS.
- Precision Manufacturing: USA-made cast iron block, precise machining, 4-Bolt Main.
- Notable Features: Forged components, performance cylinder heads, 30-month warranty.
BluePrint BP3961CT details
True Blue Power! BluePrints pro engine builders are enthusiasts just like you and it shows in the quality and performance of every engine they build. Each BluePrint crate engine is carefully dyno tested and ships with printed, proven results. If you’re looking serious horsepower at an affordable price, BluePrint Engines is the choice for you!
GM 396 SBC Base Engine – Aluminum Heads – Roller Cam
- HP & 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 ° lobe separation angle
Ignition Timing:
- 34 degrees total at 3500 RPM
Also Includes:
- Valve covers, oil pan and timing cover
- Dyno test results shipped with engine
Warranty:
- 30 month / 50,000 mile
Notes:
- A bronze distributor gear is NOT recommended on this engine
- 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.
Warranties
30 month / 50,000 mile
-
Warranty Information (PDF)
Guides & Documents
KEY SPECS |
|
---|---|
MFG. Part # | BP3961CT |
Brand | BluePrint Engines |
Crate Engine Type | Long Block |
Engine Displacement | 396 cu. in. |
Horsepower | 491 horsepower |
Compression Ratio | 10.4:1 |
Torque | 510 ft./lbs |
Camshaft Type | Hydraulic Roller |
Cylinder Head Material | Aluminum |
Piston Material | Forged Aluminum |
Crankshaft Material | Forged 4340 Steel |
Camshaft Duration (.050 in) | 230° intake / 236° exhaust |
Camshaft Lift (in) | .544 intake / .555 exhaust |
Bore x Stroke (in) | 4.000″ bored .040 over x 3.875″ |
Intake Manifold Included | No |
Distributor Included | No |
Connecting Rod Material | Forged Steel |
Valve Covers Included | Yes |
Cylinder Heads Included | Yes |
Rear Main Seal Style | 1-piece |
Oil Pan Included | Yes |
Timing Cover Included | Yes |
Water Pump Included | No |
Harmonic Balancer Included | No |
Flexplate Included | No |
Flywheel Included | No |
Air Cleaner Included | No |
Spark Plugs Included | No |
Spark Plug Wires Included | No |
GENERAL |
|
Warranty | 30 month / 50,000 miles |
Assembled | Yes |
Camshaft Included | Yes |
Block | Hand picked, seasoned, square and parallel decked, 4 bolt main |
Notes | Recommended oil for your BluePrint Crate Engine: 10W30, Non-Synthetic, Not for EGR |