[Jahred]

The 460/514 is a great choice for the 427SC Rep's where price is any consideration.

I think SB's are great, but if considering a BB in the upper power ranges I think it is critical to be realistic about whether your rolling chassis choice is up to the challenge. That might be a bigger consideration than the engine itself.

Some of the kits these days have very substantial frames and accommodate bulletproof rear end set-ups that handle those engines well and blend with that power very effectively.

I think there are some IRS set ups that can handle 600+ Horsepower, but I am a bit skeptical (breakage, traction problem from axle deflection reducing tirepatch under acceleration) and my impression is that those that can do justice to that horsepower are pretty damn pricey. I find it interesting the Johnex, which I think builds one of the best "racer"chassis, has gone almost exclusivleyl "live axel".

So anyway, just another thought. If you are going "BBB", be realistic about whether the chassis set up you've chosen will get the job done.