Hey I will be building a 383 that will either be blown or turbo powered. 8.5 :1 motor. I want 400 - 500 RWHP on pump gas and good street friendly ride, but turn up the boost for the track w/ race gas make 600+.

What kind of crank do I need to handle this? I've heard that SCAT and EAGLE were not great, what do you think? I'd like to stay w/ an American made crank and forged. What is the difference between 5140, 4340, ... I know they are different strengths, but are they forged differently? What about Lunati, Callies, LA Enterprises and Cola? How much do I have to spend for this?

There is a 68 Chevelle in the Procharger brochure I have here. Specs:
Supercharger: P-1SC
Intercooler: 3 core
Bypass Valve: Pro-Flow
Boost: 10psi
Engine: 383 Small Block
Pistons: Pro-Tru Forged
Crank: CAT 5140 Steel
Rods: CAT 4340
Heads: Dart Iron Eagle
Intake: Victor Jr.
Carb: Holley 750
Fuel Pump: Mechanical
Block: factory 4-bolt GM
Cam: Hydrualic Flat Tappet
Options: ATI A/C Bracket
Max RWHP: 572 @ 6200

I was looking @ doing something like this. How much will it cost me to build a solid short block? Maybe stronger.

Thanks, Mike

Callies Dragonslayer is a top notch 4340 crank for about $700. Maybe overkill for your power level, but it sure would hold up well under a compressed engine. American made and only a few more $ than the forged Scat and Eagle stuff.

Personally, I run a cast Eagle crank and am close to 400 RWHP. Will be in my 4th season on this crank, but my ride is N/A and my budget is tighter . . .

Can anyone else help me decide, I know you guys know this stuff.
Thanks, Mike