Join Date: Mar 2002
Location: Austin, TX, USA
Re: How much can it take?
There are too many variables to predict when the motor will blow. Metal analysis requires destroying components to know their yeild points. Imperfections in the metal (which all metals have) will make some weaker than others. How well balanced the motor is, how many inperfections are in the piston castings, bearing wear, and many other things come into play. I haven't seen any 2 bolt mains break, but I've seen cranks break and more often than not, the piston or rod gives out. It's a crap shoot. Best you can do is build it as solid as you can (afford) and treat it accordingly. But that's part of the fun. Build it, thrash it, and fix it.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI