I have a ls/ vtec 11.5.1 motor with a gsr head. When I put on the timming belt and I try to turn the motor it dosent turn.. It does for 2 or 3 turn and its locks..What can it be?? Can it be the head or the block is deck (milled) that the valve is hitting the piston .Or can it be I put the cams wrong or something....Does any one any advise....
