sbc rods

[Dirk Diggler]

Well, as everone knows, I busted my crank a few weeks back. I think there was a casting flaw by the looks of things, but who really knows? I had this engine rebuilt 3 years ago and had less than 12k on the engine. I was told I had gm pm rods. Now, I am a little concerned because the rods did not have arp blots. By the looks of these rods, are they able to safely sustain 400 rwhp? I was told they were the high performance sbc rods, but now I'm not sure they are?? standard ibeam but they are thicker on one side?

[Dirk Diggler]

thin side

[speedytang]

Dirk, Did you ever figure the rods out. My Pink rods in my Corvette still had the pink on them and it had 75k miles on the motor and I don't remember the metal material being thicker on one side then the other. If nothing else post the pictures on a Chevy forum and see what they can tell you.

[Dirk Diggler]

Speedy,

I ended up matching my eagle 4340 crank with some scat 4340 i beam's which are capable of 700hp. I took the hit and got some westco forged pistons too....ouch! But now, I KNOW my engine will be done right! my rods are the PM rods which are capable of 450hp with arp bolts. Mine didn't have arp bolts! grrrrrrrrr!

[regattacoupe]

I've read pretty decent things of the powdered metal rods. They don't exactly use them in sprint cars but they are great for sub-500hp setups. Some guys make over 600 with them.

[Dirk Diggler]

yea, I was going to reuse them, however, it was going to cost me 50 bucks for arp bolts, and another 65 to re size the rods. I paid 170 for some scat 4340 i beam's with arp bolts installed. I opted for some piece of mind with 9psi, AFR heads, and maybe a shot of nos. I have a nos kit that will supply up to 150hp shot. I plan on selling the rods and pistons as a set on ebay.