Motor combo help
#1
Motor combo help
I have fbody with a lq9 with ported and polished 243 heads, 3.73 gears, 3600 yank but I'm switching to a 4000 ptc, 90/90 fast, and a tsp 233/239 .595/.603 111lsa I was wondering if this sounds like a strong set up or combo? Is there something I need to change ?
#2
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What's your compression ratio? That cam is going to respond quite well to compression. I'd suggest aiming for about 11:1
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Chances are, your CR will be in the 10.5 range.
Download a valve events calculator. It will typically include CR calculations, so you can insert all your engine specs and then you can change the combustion chamber volume to determine what you need to achieve a certain target. Then, take your heads to a machine shop and have them treat accordingly.