Trick Flow heads ?????'s
10-31-2008, 04:50 PM
#1
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!
Trending Topics
10-31-2008, 07:57 PM
#8
TECH Fanatic
iTrader: (9)
Join Date: Nov 2005
Location: Mass
Posts: 1,311
Likes: 0
Received 0 Likes
on
0 Posts
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.
11-01-2008, 02:36 PM
#10
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?
11-01-2008, 05:51 PM
#11
8 Second Club
iTrader: (76)
Join Date: Jun 2004
Location: Goshen NY
Posts: 2,902
Likes: 0
Received 0 Likes
on
0 Posts
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
11-01-2008, 06:22 PM
#12
TECH Fanatic
iTrader: (9)
Join Date: Nov 2005
Location: Mass
Posts: 1,311
Likes: 0
Received 0 Likes
on
0 Posts
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?
11-04-2008, 01:09 PM
#16
Staging Lane
Join Date: Aug 2008
Location: Miami, near the U.S.A.
Posts: 71
Likes: 0
Received 0 Likes
on
0 Posts
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.
11-06-2008, 06:08 PM
#19
10 Second Club
iTrader: (1)
Join Date: Sep 2007
Location: In Uranus!
Posts: 1,500
Likes: 0
Received 0 Likes
on
0 Posts
