Small-Block

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NOTE: Small-block crankshafts listed in this section are for 350- cubic-inch engines unless otherwise specified. GM Performance Parts crankshafts listed in this section are thebackbone of a high-performance engine build and are the samecomponents that go into GMPP crate engines.

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Cast Iron Crankshaft, This is an economical cast iron, one-piece rear main seal
crankshaft for 300- and 330-horsepower engines.

P/N 14088526 Cast Iron Crankshaft

List Price: $425.85
Superior Price: $374.75
You save $51.10!

This is an economical cast iron, one-piece rear main seal
crankshaft for 300- and 330-horsepower engines.

Forged Steel Crankshaft, Forged 1053 steel crankshaft used in post-November 1998
ZZ4 engines. Replaces all cast or steel ZZ4 crankshafts.

P/N 12556307 Forged Steel Crankshaft

List Price: $1,175.77
Superior Price: $905.34
You save $270.43!

Forged 1053 steel crankshaft used in post-November 1998
ZZ4 engines. Replaces all cast or steel ZZ4 crankshafts.

383 Forged Steel Crankshaft, Forged 4340 steel crankshaft used to create 383-cubic-inchengines with 3.800

P/N 12489436 383 Forged Steel Crankshaft

List Price: $1,299.23
Superior Price: $1,088.38
You save $210.85!

Forged 4340 steel crankshaft used to create 383-cubic-inchengines with 3.800" stroke. Rod journals are 2.10" and mains are standard 350 size.

Crankshaft Forging, Exceptionally strong and durable 4340 steel raw forging ideal
for machining to custom stroke dimensions from 3.20-inch to
4.00-inch. The 2.900-inch diameter main bearing journals can
be ground to fit 400-cubic-inch small-block main.

P/N 24502460 Crankshaft Forging

List Price: $770.00
Superior Price: $677.60
You save $92.40!

4340 steel crankshaft