99 Black Bird T/A

iTrader: (4)

How much power should this 383 SBC make?

I'm not really up to speed on SBC stuff. What do you guys think would be reasonable to expect from something like the following...

Basic outline

383 - forged crank, good rods, hyperuretic pistons, builder says it's the bottom end will live at 7,000 rpm.

10.2 to 1 compression

240/250 Roller cam

E-Tec Eldebrock heads (aluminum Vortec's basically) w/200 cc intake runners. 2.02 valves, 1.6 exhaust. Flow probably a little better than a typical Vortec head due to the bigger valves.

Eldebrock Preformer EPS intake manifold (Vortec style)

750 cfm Demon carb

1 7/8 inch 4 into 1 headers - 4 inch collectors into open side pipes

HEI ignition system with a good coil

and it comes with a warranty.

What's y'alls take on this?

AutoRoc

Unless it ALREADY has good dyno numbers, really good street manners, a killer ET, and a low cost, I'd steer clear. Sounds like a bunch of parts that were sitting on a shelf and tossed together. Not enough compression, I am not impressed with those heads( I spent 1000+ into a set I had), That intake for those cubes/cam combo isn't looking right, and those headers are too big.

For a mean street/strip combo, I'd shoot for 11.0:1 comp, 1-3/4 headers 3" collectors, Single plane intake, AFR 210cc heads, 240-250 duration hyd. roller. I'd rather see good pistons than a good crank for something like this also. Something like this is well over 500hp peaking around 6500.

If the price is right and you're not worried about squeezing a lot of power out, it may not be a bad deal. A serious change is less duration on the cam. It will be VERY streetable with all of those parts AND a smaller cam. Something in the 230-236 @ .050" intake duration and .550" lift. Goodluck.

ZONES89RS

iTrader: (25)

^ I agree with what he is saying, the intake needs to be a good one, and i personally use a XE 236 242 duration cam with great streetable manners, spins to 6500.

Villain281H

iTrader: (5)

Another opinion that a few pieces aren't correct for the combo. The intake and header selection aren't the best call IMHO. My old 383 I ran for 3 season had Eagle cast crank and rods, forged pistons (a good idea over the hyperutechs if you plan on spraying anytime) solid cam about 530 lift and 230 duration, victor jr and 750 holley dp, 1-3/4" headers with 3" exhaust. About 370 rwhp through a TH400 and 4000 stall converter and it ran 11.40s at 114 mph in my 3500 lb Nova in the sig (guessing 475-500 flywheel hp based on track #s).

If the price is too good to pass up, snag it but know a few things will have to be changed to have it all work together. Otherwise, build YOUR combination so you'll be happy!

Derek

waller38

Well, 10.2:1 isn't that bad guys. I do agree 11:1 would be better obviously. With those heads, thats not that bad. Its gonna be a mean motor either way.

whytryz28

iTrader: (28)

if the cranking compression is around 18X then you can creep higher then 11:1 on 93 octane.