Trick Flow heads ?????'s
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Staging Lane
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From: Salt Lake City, UT
Trick Flow heads ?????'s I have an 02 Z06 and I just bought a pair of tf 215cc heads that have been milled down to 59cc. That puts the compression ratio at 11.48. Am I going to be able to run 91 octane gas with this set up? I'm planning going with a mid 230's duration cam. Any help or opinions would be much appretiated!
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I have an 02 Z06 and I just bought a pair of tf 215cc heads that have been milled down to 59cc. That puts the compression ratio at 11.48. Am I going to be able to run 91 octane gas with this set up? I'm planning going with a mid 230's duration cam. Any help or opinions would be much appretiated!
https://ls1tech.com/forums/showthrea...dcr+calculator
You can enter your cam, chamber volume, head gasket thickness, etc. in the spreadsheet. Then adjust your variables so DCR is at or under 8.5 to avoid detonation on pump gas.
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Thread Starter
Staging Lane
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Joined: Nov 2006
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From: Salt Lake City, UT
Wow talk about teattering on the threashold. I'm at a DCR of 8.44 or 8.5 depending on head gasket thickness. Unless I go with a bigger cam then I'm in the 8.20's range but I don't want to sacrife too much driveability. Unless I go with the lunati (232/238-599/601 113lsa) then I'm about 8.32. What do you guys think?
why not just run 93 in the car. your talking 5cent a gallon diff not huge.... not worth the risk in my opion. Now it all depends on your tune how good it is and how much timing is in it... its all in the timing
Wow talk about teattering on the threashold. I'm at a DCR of 8.44 or 8.5 depending on head gasket thickness. Unless I go with a bigger cam then I'm in the 8.20's range but I don't want to sacrife too much driveability. Unless I go with the lunati (232/238-599/601 113lsa) then I'm about 8.32. What do you guys think?
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Staging Lane
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From: Salt Lake City, UT
I'm in California and there are no places around here that I know of that have 93 octane.
Staging Lane
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From: Miami, near the U.S.A.
With a tight quench (or "squish") dimension, like 0.030" or less, the design of the heads for LS engines, along with the properties of aluminum heads, lets us run at dynamic compression ratios of 8.7 to 1 on 93 octane. You could probably run 91 octane on the same setup by pulling back on the timing a little at WOT.
Thread Starter
Staging Lane
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Joined: Nov 2006
Posts: 88
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From: Salt Lake City, UT
Ok I have one more question. Am I going to have any PTV issues with this setup running a 232/234-595/598 112lsa cam?
Last edited by sublime1996525; Nov 7, 2008 at 09:47 AM.
