Just trying to pick the brains of people out there as to what is the most sustained horsepower someone has been able to safely run on a stock cast crank 360 and stock rod 360? I'm currently running about 425 hp, 550-600 with nitrous (est., 448 whp on nitrous, 340 whp N/A). If i decide to fuel inject this engine and eventually toss on a turbo with a little boost, you think 400-450 whp is safe on that crank or am I just asking for trouble? haha.

Rods have ARP Pro-Wavelock bolts, ARP main studs for mains, balanced and beams polished on the rods. Wiseco pro-tru forged pistons and probably wouldn't see more than 6 psi of boost or so, I'd guess. Thanks for any input or ideas in advance, just trying to plan ahead as it were...

I had almost the same setup on the bottom end as you plus I was also spraying 150 shot and had 460RWH on spray. I started to get really worried running the stock rods so I decided to switch to Scat H-beams and a lightened forged crank. Now I don't need to worry anymore and i'll be able to spray more than 150. I was going to run another season with the stock bottom end, but I got a really good deal on the forged parts. Be sure to run the Clevite H series bearings with that spray...it will help!

I've been spraying 175 shot jets, but only getting a little over 100 rwhp gain, on this setup for over 2 years, lol. Just worried about a more consistent "boost" situation.

anyone else?

A well tuned turbo combo will be easier on the internals than the N2O for the same HP. Now asking if 40year old parts will live XXXX time,who could know? At 450 FWHP I wouldn't worry too much.

Since the engine is already almost 425 hp N/A (est.) I suppose like a lot of things, I'll just have to be my own guinea pig and see what happens. If it breaks, I needed to upgrade it!