me and my brother rebuilt it and got help from a pro whos done this kind of thing but never to a cozzie im also thinking maybe it was of set on the distributor or somthing for tuning resons as it was sitin at 380bhp so bound to hav a few mods were not sure off and put timing all as standard or cud the scorpion straight thru be doing it failed figers are 5.710 @ 1370 rpm but should be 3.50 or less @ 1200 rpm any thouhts will be tryed thanks for ur number pal maybe here from me 2marra lol...