What are good compression figures? I just finished a UIM replacement with a APN unit and also replaced LIMgasket with the new GM one. I had a UIM failure.

I went to start it and it spins over but didn't fire. Pulled plugs and all were wet with Oil and water or gas. Did a compression check and the lowest was 90 and highest was 150. I think my head gaskets went out, or the heads are shot, are the engine is shot. At this point I don't know if I should pull the heads or swap the whole engine. I could get a wrecked '95 parts car for $300. The guy says it ran fine before the wreck.

What to do?????????? :?: :?: :?: :?:

You should be in the 140-160 range with no more than 10% between the highest and the lowest.

Personally I'd pull the heads rather than swapping the engine, It'* way easier.

I cleaned the plugs stuck'm in and she started and runs fine. I don't have a stat or antifreeze in it reight now. I'm gonna put a stat in and watch the water level tomorow.
Good night