Seasoned 4 bolt main blockOne piece rear main sealMax bore .040Align honed main bearing boreSonic tested to assure wall thickness
New cast steel crankshaft-externally balancedChevy heavy beam rods resized and clearance improved150,000 PSI rod boltsKeith Black Hypereutectic pistonsHastings moly ringsNew Hydraulic flat tappet camshaftHeavy duty double roller timing
GM Vortec cast iron cylinder heads1.25 dia. valve springs, hardened retainers and keepers2.02 swirl polished intake valves1.60 swirl polished exhaust valvesElgin hardened push rodsLong slot rockers with positive lock adjusting nuts
Cam Type: Flat tappet.480 Intake .489 Exhaust218 Intake / 224 Exhaust duration @ .050 - 112 degree lobe separation
34 degrees at 3500 rpm
New cast iron marine intakePolished aluminum valve coversOil panBrass freeze plugsAll engines are dyno tested on a state of the art DTS dyno and ship with a complete spec sheet
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