LS1TECH - Camaro and Firebird Forum Discussion

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- Generation III Internal Engine (https://ls1tech.com/forums/generation-iii-internal-engine-5/)

- - GM's CNC LS6 Heads (https://ls1tech.com/forums/generation-iii-internal-engine/68814-gms-cnc-ls6-heads.html)

ls1290

Nov 14, 2002 12:08 AM

GM's CNC LS6 Heads

I was wonder what are the largest sized valves and springs that can be used with these heads without having to have them reworked? GM part # 88958622. TIA.

ls1290

Nov 14, 2002 11:36 AM

Re: GM's CNC LS6 Heads

ttt

Vengeance Racing

Nov 15, 2002 09:31 PM

Re: GM's CNC LS6 Heads

Who has seen these heads and had anyone flow tested them.

GeorgeC

Nov 15, 2002 09:37 PM

Re: GM's CNC LS6 Heads

There's already a pretty good thread about these heads going on...

https://ls1tech.com/ubb/ultimatebb.p...c;f=1;t=008977

You really can't get away with changing the valves at all without having to do some reworking to the seats...

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