Thread: N/A L67 with XP cam

Originally Posted by SgtMarshal

I was on supercharged timing until I realized that I was, it's on na timing now. I've been upping the timing advance a little at a time, I think I'm at 31 wot now. Still no hint of kr.

Is the ssm90 normally a na or sc manifold, having a hard time wrapping my head around what you said

If you put a s/c on it you'll want to lower the timing back to 15-18.

I can't remember what the SSM90 kit is.