I just did a compression test on my 95 with a little over 100k and with 6 strokes each one came up to 165 to 170 psi. Is that good? or is it time to do a rebuild? I've almost got my head completely built, so should I wait and build the block before I put it on? thanks

 

165-170 is pretty good for a LS engine............. but if you want the most out of it you should replace those LS pistons for some higher compression pistons and new rings.

you should have the engine block removed and have it bored and honed and install over-sized pistons.

 

Is 150 too low?

 

I've heard the b16 pistons are a pretty cheap way to get compression up? I've got some big cams, what would I need if I wanted to get to 11:1 or 11.5:1? when you say overbored you mean like the bigger type r pistons? I was thinking of getting a used block so I wouldn't have any down time.

 

i belive the minium spec is about 140-145psi.................so i'd say 150 is getting pretty low...........

 

yeah spec min is 140....i tested my b18b the other day, 210, 208, 209, 210....lets hope it still stays that way....

 

i get 150-155 all across. mine has been bad.. and is gettin worse. BOOST ON!