1987 IROC, 700R4 with stage 3 shift kit, factory stall, auburn posi with 4.10's, gutted interior (1 seat, no heater core or any of that) Mickey Thompson ET street radials (255 50 R16s) and
motor is:
454 big block bored to a 468
Ported 366 heads
224/234 duration .527/.544 lift
Performer2 manifold
750CFM carb

How much power do you think it's making and what do you think it will run on motor and on bottle (100 shot)?
I plan on doing fiberglass fenders and doors, tube k member, solid mounts, lowering the lower control arms, and adjustable panhard rod, torque arm and after getting it dynoed a higher stall converter.

My guess is around 440-450hp/500ish tq.

 

Your guess is probably close enough but I doubt it's that high. That's a very mild street cam for a big engine.

What's a 366 head? Heads from 366 BBC? Heads are always refereed to by their casting number, not what engine they came off off. What size are the valves?

 

My thing would be, will the 700r4 hold up? I've never had any luck with them, and wouldn't have another. When I had my GTA, I had 3 differant trannys in it, in 3 years. One of them with probuilts advice, and recomended mods. They didn't build it, I did. I've always built my own trannys, and have very good luck with my th350s and glides.

 

I had a 700R4 the first year I owned the car. Switched to a TH350 because it was an easy swap. After 1 or 2 years, I installed a TH400 with a transbrake. After having some repeated difficulty with reverse, I yanked it out and installed a glide. I love the powerglide. I should have went with it right after I yanked out the 700R4.