Hi Guys I did a compression test on my 304 it has had a cam put in it and maybe a little bit of head work down, anyway the figures where like 110,120 for six of the cylinders and then there where two that where at 150. My question being ruffly what should they be at? and with those figures is apossible i have a blown head casket or maybe the rings are gone and time for a rebuild, I only done a full service not long ago but it has been running ruff. Thanks

I would think 10-15 difference would be acceptable

Time for a rebuild,The difference is way too much,As above 10-15 is acceptable. Cheers Marty