[b454rat]

Make sure the block is Ok, then bore to .30 over. Get the crank turned and polished, use 5.7" long rods, (stock 350 rods) resized and use ARP bolts. I've used Kieth Black hyperuectic pistons and never had any problems. Ring size doesn't really matter. I think the pistons had a 22cc dish, comp was 9.8:1 with 64cc head. Comp Cams Xtreme 268 cam and whatever lifters. High volume oil pump, new flex plate and harmonic balancer, then get the whole rotating assembly balanced.

I had this motor in a 90 GMC with TBI, and would flat out ****in haul ass!!!!! Sounded wicked at idle, would pull like a freight train throughout the entire RPM range. The 90 had the half moon style speedo that went to 85, had it in 3rd (700r tranny) with the speedo going past 85 and coming up on the other side, and was still pulling like crazy. Buddy built the same lower end for his car, can't remember what cam or heads he had, but heads were better than my stock TBI heads. This would be a killer street engine. I would run 93 in it, though I know you said you didn't want to, but the way gas is today, the 93 won't absorb moisture like 87 will.