BluePrint Engines 383CI Stroker Crate Engine | Small Block GM Style | Longblock | Iron Heads | Roller Cam
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! Recommended Fuel: 91 Octane
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 or 50,000 miles — with the extra confidence only BluePrint can provide. Our warranty applies to individual or professional installations, is fully transferable, and covers engines worldwide.
- HP & Torque: 420 HP / 440 FT LBS
Compression Ratio: 9.5:1
Cast Iron Heads
Hydraulic Roller Cam
Cast Steel Crank
- Hand picked seasoned block
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
4.000" Bored .040" Over
1-Piece Rear Main Seal
Mech fuel pump provision: Yes
Passenger Side Dipstick
- Drilled and tapped for clutch linkage
- New BluePrint Cast steel crankshaft
OEM type 5.700" connecting rods w/ 150,000 psi bolts
External Front/ External Rear
- Cast iron Vortec heads
1.25 diameter valve springs
Hardened retainers and springs
2.02 swirl polished intake valves
1.60 swirl polished exhaust valves
Hardened push rods
- Cam Type: Roller
.510 Intake .520 Exhaust
230 Intake / 236 Exhaust duration
@ .050 - 110 degree lobe separation
- 34 degrees total at 3500 RPM
- Aluminum intake manifold
New chrome valve covers
Brass freeze plugs
Dyno tested and shipped with results
- 30 month / 50,000 mile
This engine requires a 400ci weighted harmonic balancer, and late 350ci weighted flexplate/flywheel.
BluePrint Engines recommends a 2000- 2400 rpm stall converter.
*A bronze distributor gear is NOT recommended on this engine
Not for use in pollution controlled vehicles.