Introducing Edelbrock's Lingfelter ported LS1 cylinder heads!
- CNC-ported by Lingenfelter Performance Engineering, benefiting from years of experience in GEN III performance modifications
- Designed for 1997 and later GM LS1 and other GEN III/IV engines, including 4.8L, 5.3L and 6.0L V8s.
- 65cc combustion chamber retains the stock compression ratio for bolt-on convenience
- Available bare or fully assembled and ready to bolt-on with high-quality stainless steel 2.02" intake and 1.57" exhaust valves.
- Executive Order number D-215-69 for part #61969
| Combustion Chamber | 65cc, CNC ported | |
| Intake Runner Volume | 202cc, CNC ported | |
| Exhaust Runner Volume | 83cc, CNC ported | |
| Intake Valve | 2.02-inch | |
| Exhaust Valve | 1.57-inch | |
| Deck Thickness | 5/8-inch | |
| Valve Spring | 1.055-inch / 1.290-inch O.D Up to .600" lift |
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| Valve train | Stock shaft rocker system | |
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