At a crossroads, SB guys please chime in.

thanks rumble thats what i wanted to know.
I was wondering because a stock 400 block will only take so much hp. Would something like a r3 take more?

What?
440 Source.com Everything you've ever wanted to know about blocks and more....
And pick up the book andyf wrote.
How to Build Max-Performance Mopar Big-Blocks: Andy Finkbeiner, John Baechtel: 9781613250921: Amazon.com: Books