4 bolt main 1pc rear seal block w/Passenger side dipstick onlySquare and parallel deckedAlign honed main bearing boreCylinders honed on computer controlled machine to within .0002 straightness and roundnessCylinders are sonic tested for thickness
New cast steel crankshaftHypereutetic pistonsChevy heavy beam rods with 150,000 psi boltsHastings Moly ringsBalanced rotating assemblyMelling high volume oil pumpFlat tappet hydraulic lifter camshaftHeavy duty double roller timing set
Cast iron Vortec heads1.25 diameter valve springsHardened retainers and springs2.02 swirl polished intake valves1.60 swirl polished exhaust valves1.5 long slot, stamped steel rockersHardened push rods
Cam Type: Flat Tappet.487 Intake .503 Exhaust234 Intake / 244 Exhaust duration @ .050 - 112 degree lobe separation
34 Degrees Total at 3500 RPM
Aluminum intake manifoldNew chrome valve coversBrass freeze plugsDyno test results shipped with engine
This engine requires a 400ci weighted harmonic balancer, and late 350ci weighted flexplate/flywheel.BluePrint Engines recommends a 2000- 2400 rpm stall converter.
Not for use in pollution controlled vehicles.
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