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  • Pontiac 400 455 4340 Forged Steel Crankshaft ST-4.25 M-3.25 RJ-2.200 RMS-2Pc Ext

Pontiac 400 455 4340 Forged Steel Crankshaft ST-4.25 M-3.25 RJ-2.200 RMS-2Pc Ext

$965.30
SKU: PCE276.1140

These Speedmaster crankshafts are made from the same strong aircraft-quality forging as standard-weight cranks, but have profiled counterweights for less weight. Speedmaster lightweight crankshafts are perfect for engines wanting quicker rpm. These crankshafts feature profiled aero-wing counterweights and have straight shot and chamfered oil holes. Speedmaster crankshafts are nitride-hardened, with large radii on all journals for superior wear resistance, and use lightening holes in all rod throws.

Details

Brand:Speedmaster
Part Number:PCE276.1140
Part Type:Crankshaft
Product Line:4340 Forged Steel
Rear Main Seal Style:2-piece
Engine Stroke (in):4.250 in.
Crankshaft Material:Forged 4340 Steel
Engine Balance:External
Lightened:Yes
Requires Narrow Bearings:See notes below
Rod Bearings Included:No
Main Bearings Included:No
Rod Journal Diameter (in):2.250 in.
Main Journal Diameter (in):3.250 in.
Minimun Rod Length (in):6.700 in.
Balancer Bolt Thread Size:Standard
Crankshaft Snout Style:Standard
Quantity:Sold individually.
Notes:Check the bearing to crank radius clearance. Rod bearings may need to be chamfered or alternatively use narrow rod bearings.
Tool:Stroker Combinations