243 milled 59cc...cr ? lq4
06-09-2010, 04:23 PM
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243 milled 59cc...cr ? lq4
yea i know another ls6 head question. but can anyone figure out what kind of compression ratio i would be at? ls6...(yes real ls6 heads) milled to 59cc/ or roughly .025, on stock head gaskets, on a lq4 6.0...if not give me a link were i can figure this out. i will be running premium gas anyway, just curious how much compression it would be.......thanks nick
06-09-2010, 05:17 PM
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Well, Stock 5.3 heads are 61CC and they net about ~11:1 CR when added to a LQ4. So, you will be above that.
Google CR calculator if you need it closer than that. You'll need to measure how far the pistons come above the deck though...
Google CR calculator if you need it closer than that. You'll need to measure how far the pistons come above the deck though...
06-09-2010, 05:26 PM
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thanks dude i thought i should be fine at .025 because i herd somewere that the max you wanna mill is about .040. i thought my pvt clearence should be fine at .025. plus the lq4 has dished pistons.
06-09-2010, 05:42 PM
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ahh ur right 59cc is .035 milled...thats my bad....just did a search and found a thread..59cc milled 243s with stock head gaskets will be at 10.7:1 to 10.8:1 CR..
