BluePrint BP4002CT1 GM 400, Base Engine, Alum Heads, Roller Cam

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 400 – Base Engine – Aluminum Heads – Roller Cam Overview HP & Torque: 500 HP / 510 FT LBS Compression Ratio: 10.3:1 Aluminum Heads Forged Pistons Roller Cam Forged Crank Part #: BP4002CT1 Block BRAND NEW BluePrint Cast Iron Block 4 Bolt Mains Square and parallel decked Align honed main bearing bore Cylinders are sonic tested for thickness Cylinders honed on computer controlled machine to within .0002 straightness and roundness Rotating Assembly New forged crankshaft – 3.750" stroke & 5.7" rods GM connecting rods 150,000 psi rod bolts Forged pistons Hastings moly rings Rotating assembly balanced to within 2 grams High volume oil pump Hydraulic roller cam Roller lifters Cylinder Heads BluePrint aluminum – 64cc chamber Hardened retainers and springs 2.08 swirl polished intake valves 1.60 swirl polished exhaust valves BP Aluminum Head Part# HP8103 Cam Specs Cam Type: Roller .555 Intake .576