Ok, now to start off this is my friends car we just put a turbo setup on an it ran fine the he wanted to put arp studs in an a comatic hg so we did the car ran good for like a week now its miss firing a tiny but caint realy tell an when you are comming to a stop light an push in the clutch it dies some times an lidels at like 600rpm an we can see what looks like oil comming out from under the the head an its not the vc an its on both sides of the block. What you guys think?

You should probably do a leak down test or something.

I dont have the tools to do a leak down test just a commpression test. I think it is the hg cause of the oil leaking from under the head. There is no oil coming out of the vc at all the head has no oil on the sides of it at all eather its just on the block its not alot but enouf to see. You caint see it leak but it is an its not from the intake. I was thinkn mayb the arp bolts pre loaded an didnt get tight all the way or the nuts backed off abit.

Any one have any other thoughts on this?

Ok i ran a compression test on it an it ran a prity solid 150 on all four it has wesco fordge pistions in it that are a 9:1:1 so i am not sure what his compression should i konw stock is 180 but i was thinkn if it was hg it would have like two that where good an two that where real low or just one low.

Do anyone have any ideas of what the compression should be?

Shouldn't the compression be higher?? Cause I did a oe build but with a .075mm thick Cometic MLS HG, I do leak a little oil from the head right by the dizzy, and my compression came out to be 170. Besides the 2nd cylinder cause I know for a fact my compression rings got lined up wrong with the ring compressor lol.

No not with low commpression pistions.