Scat Chevy 4340 Forged Standard Steel Crankshaft - SB Chevy 400, 3.750" Stroke, 6.000" Rod Length, 2.100" Rod Journal R07C15M 1975-1985 Chevrolet C20 2 1 2 to M77MS829H30 1303LS1-3 Size:Youth 2X-Large

1975-1985 Chevrolet C20

drain petcock

eliminating two prime sources of leakage

Helps Clear Firewalls And Intake Combinations

Features:Designed for use in marine applications with Chevy V8 automotive enginesWill not accept a vacuum advance canisterSupplied with a bolt down HEI style distributor cap and rotorWeathertight connectors are used for locked and sealed connectionsMust be used with an MSD Ignition ControlO-ring seals can be added to modified blocks to improve oil pressure controlSpecial oil tract improves lubrication to the distributor and cam gearNylon pads ensure smooth operation of the advance weightsAdvance weight pins are staked and tig welded to the plateMechanical advance assembly can be locked out for crank trigger systemsAdvance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reductionPolished steel shaft is QPQ coated and guided by a sealed ball bearing and extra long sintered bushingMaintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangeEasy-to-adjust mechanical advance with supplied springs and stop bushingsCNC machined billet aluminum housing and billet aluminum base with two flame arrestor holes with brass screensUL Approved

Scat Chevy 4340 Forged Standard Steel Crankshaft SB Chevy 400, 3.750" Stroke, 6.000" Rod Length, 2.100" Rod Journal R07C15M 1975 1985 Chevrolet C20 2 1 2 to M77MS829H30 1303LS1 3 Size:Youth 2X Large 1975 1985 Chevrolet C20 drain petcock