GM's CNC LS6 Heads

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11-14-2002, 12:08 AM

ls1290

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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.

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11-14-2002, 11:36 AM

ls1290

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Re: GM's CNC LS6 Heads

ttt

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11-15-2002, 09:31 PM

Vengeance Racing

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Re: GM's CNC LS6 Heads

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

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11-15-2002, 09:37 PM

GeorgeC

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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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