LS1TECH - Camaro and Firebird Forum Discussion

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-   -   PRC LS6 2.5's question (https://ls1tech.com/forums/generation-iii-external-engine/1573684-prc-ls6-2-5s-question.html)

red_cap Aug 10, 2012 04:54 AM

PRC LS6 2.5's question
 
im looking at a set of used (3,000 miles on them) PRC 2.5 LS6's. my question is they are milled to 61.5cc....is this a good choice over PRC 2.5 5.3's in a street/strip LS1 f-body? im gonna be using a cam similar to a torquer v2. thoughts?

dodson55 Aug 10, 2012 08:24 AM

the 2.5 ls6 heads are better heads then th 2.5 5.3 heads the flow a little better ad have a better combustion chamber design the only advantage with the 5.3 heads is a bump in compression but with the ls6 heads being milled it wont be that big of a difference

red_cap Aug 10, 2012 08:30 AM

thats what i was concerned about. im still very new to this game, but have a good background in auto mechanics. i had a friend tell me that the 5.3's would be a incress in compression as well, but i wanted to make sure with these being milled to 61.5cc wouldnt cause any trouble. and i plan to run a 100-150 shot later and dont want these to cause any issues because of to high compression.


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