LS1 engine block liners have very little tolerance for rework! 97-98 blocks can only be honed out .004 inches. The 99 and later can be a max of .010 over.
The Stock crank has been known to handle over 500 hp Naturally Aspirated and 650 hp in Forced Induction uses! The rolled fillets on the crank journals are the biggest contributor to its strength.
LS1 Head | Casting # | |
---|---|---|
97-98 (Perimeter Bolt Valve Covers) | 10215339, | 12558806 |
99-01 | 12559853 | |
01-04 | 12564241, | 12559853 |
Valve Size: Intake 2.0 Exhaust 1.55
Combustion Chamber Size: 66.67
Single Use Head Bolts
Visual Cues For Differences : LS1 Exhaust Port Oval LS6 D-shaped
How to Build High-Performance Chevy LS1/LS6 V-8s (SA Design)
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