BluePrint’s BP38321SP GM Small Block compatible performance crate engine are dyno tested at our factory with a Holley Classic 750 CFM Carburetor, and H8002K Cylinder heads to get 432 horsepower and 450 minimum torque values. This engine features a 4-inch bore which mathematically yields a 377ci with a 3.75-inch stroke. This customizable engine comes with timing cover, harmonic balancer, oil pan, hydraulic roller cam with 1.5-inch rocker arm, and a high-volume oil pump.
Description:
- Horsepower & Torque: 432 Horsepower / 450 FT LBS. Torque
- Compression Ratio: 9.5:1
- Forged Pistons
- Forged Crank
Block:
- BluePrint Engines High Strength Cast Iron Block
- 4 Bolt Main
- 1 Piece Rear Main Seal
- 4.00" Bore
- Passenger Side Dipstick
- 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 Crankshaft
- 3.75" Stroke
- Forged Pistons, 18cc Dish
- Forged Rods with 150,000 PSI Bolts
- High Volume Oil Pump
- Hydraulic Roller Cam
- Heavy Duty Double Roller Timing Set
- Harmonic Balancer
Cam Specs w 1.5 Rocker Ratio:
- Cam Type: Hydraulic Roller
- .495 Intake / .502 Exhaust Lift
- 220 Intake / 224 Exhaust Duration
- @ .050-114 Degree Lobe Separation
Ignition Timing:
- 34 Degrees Total (at 3500 RPM)
Also Includes:
- Oil Pan
- Timing Cover
- Harmonic Balancer
Recommended Break in Oil: BPP710 (Click Here)
Recommended Service Oil: BPP10W30 (Click Here)
Recommended Oil Filter: BPP51061 (Click Here)
Notes:
- This engine features a true 4-inch bore, which mathematically yields 377 CID with a 3.75-inch stroke.
- This engine requires a non-weighted 8" harmonic balancer (included), and late 350ci weighted flexplate/flywheel.
- The HP and Torque numbers were derived from dyno testing with a 750cfm carb, and with H8002K cylinder heads installed.
- Not for use in pollution-controlled vehicles.
*A Bronze Distributor Gear is NOT Recommended on this Engine.
BETTER THAN THE REST.
The satisfaction of our customers is our highest priority at BluePrint Engines. We use quality components to balance your engine's rotating assembly within two grams of spec. We dyno test your crate engine and certify that it's ready to deliver horsepower and torque.
We give your BluePrint engine the industry's best-in-class warranty for 30-months / 50,000 miles — with the extra confidence only BluePrint can provide. Our warranty applies to individual or professional installations and is fully transferable.
For a detailed overview of our warranty, click here.
IT ALL COMES DOWN TO RESULTS.
We make sure we hit our target horsepower and proper torque with every crate engine. We use an advanced computerized balancer to get our rotating assemblies within two grams, ensuring silky smooth power over the entire RPM range. That's precisely why our engines sound and run better than our competitors.
BRAGGING RIGHTS INCLUDED!
A comprehensive, dyno-generated printout showing these critical specs will accompany your delivered engine. No more guessing or wondering what your installed engine's real-world peak horsepower and torque ratings actually are. Any doubters in the crowd? Simply flash 'em your dyno results!
This engine will be dyno tested before it ships to you at no additional charge (others charge $500)!