I posted a while ago about what kind of power/torque I should expect from my setup, but at the time I wasn't 100% sure of what I would be using but now I have a fair amount of certainty. I'll be using the stock rotating assembly from an L05, 750 CFM Quadrajet, Summit K1103 Cam, Dual Plane Intake Manifold, and DZ302 (Yes, from a 69 Z28) Heads. I'm not aiming for anything high, this is going to be in a daily driver of course, I'd be more than happy with having equal or more power/torque than a stock 1990 IROC. And for those who may question why I have such a frankenstein combo of parts, I'm trying to save as much money as possible, and with the rest of the parts on this list purchased I'll have spent around 600-700 bucks in all.

 

Run it at the drag strip next spring. The trap speed will tell you what's actually getting to the ground. And you'll have fun too!

If you want a full torque curve then you can put it on a chassis dyno but it will cost almost as much as your entire build so I don't think it's worth the curiosity.

 

250-270ish. Hard to say. Do you have headers? I ran a K1105, old school #041 heads, flat tops, 750 Holley and it turned 13.2s in my old 82 Z28. Id say that was around 325+HP at flywheel. I know you have dish pistons and a touch smaller cam and those heads are not anything special basicly what I had ran on my engine but better than the stock swirl ports that came on L05s. Run it at the track let's see....

 

ALOT of it is going to depend on what you have for the exhaust. If it still has the LG4/L03 manifolds, small "T" pipe and stock exhaust I see it struggling to make 250 hp. If it has headers, a decent Y pipe and a good 3" catback I could see it in the 300 HP ball park.

I had a TBI short block, mellings MTC1(204/214 @ 0.050"), ported 601 heads with 1.94/1.60 valves, spreadbore performer rpm with a q-jet and long tubes making 260 hp and 310 tq at the ground through a 700r4, 2 piece driveshaft with a carrier bearing, and 8.5" 10-bolt while turning a clutch fan and all accessories minus the air pump. .

The intake manifold alone can make a 20 hp difference. The stock GM manifolds flow pretty poorly even on a 305.

 

I'm going to use Hedman Shorty Headers (68470) with a Y-Pipe going to 3" exhaust with a flowmaster muffler.