Hi folks,

When I first got my blacktop 20v (11:1 compression ratio) I was seeing between 200-205psi on all pistons.

2 years later I thought I blew a head gasket, but the head checked out straight. I had the machine shop flycut the head just to remove any nicks or scratches from me handling it. At the same time I did bit of port work on the intake side only and removed a moderate amount of material to make the intake port smooth.

At the same time I took out maybe 1.5cc of material from the head de-shrouding and fun stuff like that.

After installing the head I have compression numbers of around 178-184psi across the board. I also have quite a bit less torque below 5000 rpm than I did before, but it pulls really strong above that. I'm supposed to go to the dyno pretty soon to get some real mapping done.

My question is though, with 270 degree cams and 180psi pf cranking compression, would you suspect I need more compression? The kelfords have always had less torque below 4500 rpm than stock and my tuner feels that 270 degrees is a lot for a street car and thinks I should have higher than 11:1 compression ratio (which is now probably less since I did some grinding in the CC. I wish I took some measurements at the time but I was in a bit of a rush to put it back together).
I'm debating if I should put in a trd metal headgasket (.8mm) before I pay for a bunch of tuning to be done.

thoughts?