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PRC 5.3 stage 2.5 heads vs port my 6.0 stockers

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Old 12-19-2008, 01:17 PM
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Default PRC 5.3 stage 2.5 heads vs port my 6.0 stockers

I have 03 silverado ss (lq9)
I want to do a h/c on it
I already have a 3200 stall, shift kit, ud pulley
I want to boost the compression but i want to get some nice flowing heads.
I might go 408 later and n2o
Old 12-19-2008, 01:20 PM
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you'd have to mill them i would think.

was thinking those were 72cc heads.

probably better off selling them and getting the 5.3s
Old 12-19-2008, 01:23 PM
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Originally Posted by teke184
you'd have to mill them i would think.

was thinking those were 72cc heads.

probably better off selling them and getting the 5.3s
how much compression you think i could get if i but a thinner cometic gasket and milling?
Old 12-19-2008, 01:44 PM
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Default lq9

Originally Posted by teke184
you'd have to mill them i would think.

was thinking those were 72cc heads.

probably better off selling them and getting the 5.3s
he has an lq9 it has flat tops were the lq4 is dished...he has 10.1 compression....

but yo are right he needs to mill them to bump it up...id do the 5.3s or maybe some ported ls6 heads...




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