pistons questions? will ls1 pistons fit in a lq4?

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05-16-2008, 08:12 PM

silverado2000

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pistons questions? will ls1 pistons fit in a lq4?

i have an lq4 that im going to put a set of 243 heads on. the engine is going to be boared .030 over.need some help picking pistons. im looking for about a11 to 1 compression ratio. dose anyone have any advise?

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05-16-2008, 08:19 PM

cavmattz24

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Ls1 pistons are 3.898

An lq4 bored .30 over would be 4.030.

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05-16-2008, 08:52 PM

silverado2000

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thanks. do you have any suggetions on what pistons i should go with to get around 11:1 comp?

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05-17-2008, 07:54 AM

OnyxSilveradoSS

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depends, are you rebuilding the entire motor?
if not mill the heads, but I dont know if you can mill that much with the added volume of the dished LQ4 pistons.