Which has more Piston to Valve clearance.. 15° or 13.5° heads?
12-21-2018, 08:45 PM
#22
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Ai does excellent work. They can tune the heads chamber volume in relation to your cam timing. Cam timing is more important to power than compression ratio, so don’t get wrapped up in C.r. If you dont want to fly cut pistons etc. you will be way faster than what you were before
12-22-2018, 02:33 PM
#23
Yes, unfortunately this comes from the head engineer at Trick Flow. It's unfortunate, but that's the case with them. Part of it is because of the larger intake valve diameter offsetting some of the gains of rolling the angle. The LS3's have more though. It's a bit more work, but going with some domed pistons would be helpful and solve this piston to valve issue entirely.
Yeah the larger valve would do it. I was picturing same size valves.
I'm a huge fan of the as cast 220's myself