ya we knew something was wrong,like longs rods,or stroker crank or something,but not sure.the way we knew we had a prob is leaking antifreese when floored."we did not pur this motor together his buddy did."so if it was your machine what would you do.he lost the receipt to find the part numbers on everything.he does have a milled head with dome pistons to i believe.thanks for all you input.this is how i learn