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This crank can be fitted to all LS engines ( some needing to be clearanced)
When fitting this crank to a LSA or LS3 with a 4.065 bore the new engine capacity will be 6.6L or 400Ci.
Forged centrally balanced made in the USA crank
Genuine GM forged crankshaft from the Gen V 6.6L L8T
GM Part Number 12708884
- Forged
- 3.860 inch stroke
- 58x crank trigger
- 8-bolt flywheel pattern
- Centre counter weighted design
5.3L and 6.0L iron blocks must be clearanced to use this crankshaft