really trying to decide what to do next and how far to go with the truck. if i go much farthur i will need to go alot farthur(better tranny, more fuel, other driveline parts....). considering doing a cheap bottom end and calling that good enuff for now.

thinking about forged pistons, good rod bolts and head bolts, mild cam, stock heads. drop the compresion a little to 9-1 and run 10psi or so with good gas, spin it a little higher maybe 6200 or so, spray it a little more like a 150shot or as high as my fuel system holds out, maybe a 2 stage so 50 out of the hole and another 100 after it gets to 2nd. on a really good weather day with a tail wind might just see a high 10??

back to my subject, will the stock rods hold if i put in some good bolts and avoid detonation? thinking this will put me in the 600+rwhp range. any oponions about my plan?

 

parish, i've heard many times over that the biggest weakness in our rotating assembly is the rod bolts, i have a set of arp rod bolts i am using on my 6.0 and they just look so much more beefy than the stockers, i can see why the stock ones aren't that great. with a new set of bolts i think you should be good for quite a bit more poewr. i'm using stock rods on my motor for now with arp bolts and i'll have a huge cam, bad *** heads and a big shot of NAWSSSSSSSS, so we'll see how that holds up in the months to come.

 

Spend the money on rods. If I remember correctly Mix said it was his rods that failed and not the bolts. If a rod goes it might make a nice little window in the side of the block($$$).
I would also spend money on some good head bolts with that kind of cylinder pressure. I am currently testing the limits of a stock 6.0 bottom end, I installed the 12lb. pulley.
P.S. Dyno that thing.

 

From what I've read in the internal section, it seems the stock rod's biggest enemy is high RPM's. They are safe to consistent 6500-6700 RPM runs as long as you upgrade your rod bolts. So to answer your question, 6200 RPM's should present no problems but, the rods themselves are said to support up to about 500hp. With this setup you're describing, you'll be pushing them to their limits. Since you plan on doing pistons, in my opinion, wait a little bit longer til you can get the forged rods also.