My pistons are not flycut, I have Comp XE262Ah cams. They are timed and index correctly and they clear the pistons with no issues.
I will say one thing though, a guy was building an identical engine as mine and using the XE270Ah to my knowledge had PTV issues when they were trying to time the cams. They eventually went with VT stage 2's and had no issues and the guy is still to this day running those cams with the -3cc pistons.
Having to take too much timing out, comes down to just how good he could tune it. I have 20 degrees on 93 octane. That is a conservative tune if I wanted to max the timing we found with stock ignition could be put up to about 24 degrees of timing. At 25 degrees it started to have a slight knock and since I was not racing I told him to leave it a little low, so we agreed on 20.
Just throwing that information out there.
The guy I was telling you about with -3cc pistons, VT Stg 2's, mildly ported heads, LT's put out pretty close to 300rwhp in a 5spd. I think the exact numbers were something like 295, I believe.
Just to give you an idea of what your options are with the -3cc pistons.
If you are going to stay N/A or even spray nitrous then I would definitely get the compression up, but thats me, it's your car.
Hope it helps.
Good Luck
:afro:
