View Poll Results: ZO6 243 heads stock valves LQ4 Porting
AI
12
63.16%
TEA
4
21.05%
Other
3
15.79%
Voters: 19. You may not vote on this poll
Stock 243 Z06 heads Lq4 which head porter?
12-18-2015, 05:37 PM
#21
Originally Posted by gagliano7
I know when tea ports them the cc goes up so you need to mil to lower. When i emailed AI he said after porting and 60 cc heads the biggest i could go without fly cutting is 230/238 113 cam .605 lift. When i talked to BTR they told me stage 1 tea 243 heads milled .030 (which according to tea comes out to 63cc) i could run the BTR stage 4 cam which is 235/242 .621 .592 111+3.
12-19-2015, 04:59 PM
#22
TECH Addict
Thread Starter
It's always best to measure just to be sure. Piston to Valve clearance isn't something you want to leave to chance. Unless you physically measure, there's no telling how close to disaster you are. I remember Dr. Whigham on here was running AFR 205cc heads milled down to something like 58 or 59cc and he ran a 230-236 112LSA cam and didn't have any clearance issues, so you just never know.
