Didn't the Boss blocks come with 4 bolts? I was thinking of the aftermarket as well. Ford's R302's and blocks like the World Man-O-War I think, and Dart Iron Eagles are 4 bolts. And the webs are huge, many of the 4 bolt aftermarket blocks are capable of supporting in excess of 1,000hp reliabily. You could also build a whole engine for the cost of just one of those blocks though

 

the boss 302's are def 4 bolt

and the new boss blocks are insanely expensive [:'(]

 

Yeah, but if you wanna build a 302 based engine that puts out well over 500hp and not have to worry about it, you're gonna need an aftermarket block like the new Boss or a Dart. That's what some guys have too, 600 and 700hp 302s off blocks like that with blowers. There are guys that build race cars with 360s (4.125x3.4 bore/stroke setup) with blowers putting out well over 1,000hp. And the weight stays down with the smaller block. Though the aftermarket blocks are heavier than a stock block, they're still lighter than a big block

 

4.125 bore x 2.87 stroke
lightweight forged pistons
h beam rods
forged crank
awsome balance job
+ lightweight valvetrain
---------------------------
9000 rpm motor....... weeeeeeeeee

 

hmmm

ford made a 330 didnt they? im pretty sure it was an industrial engine, but that would probably be a BAD engine to build on

 

The 33x was a truck engine...built for low RPM torque.

 

i thought the 360 was too [&:]

 

Thanks for all the tips. I'm gonna try some of this stuff out this weekend. Hopefully something will work. If not i'll be in touch.

 

It was, but it was available in light duty trucks, where the 33x wasn't.