About the Motor: It is a fully modified 1969 Chevy Z28 Camaro 350 4 bolt main
motor that includes Comp Xtreme Energyâ„¢, XE274H-10 Very Strong Mid-Range
Torque and Throttle Response Cam, Comp aluminum Roller Rocker lifters,
forged pistons, Brodix Track 1 Polished aluminum heads with 221cc intake port
and 67cc combustion chambers. These heads are valued at 2,500.00 each.
Brodix orange stained aluminum Valve covers that match the motor. 1/4 inch
thick Headers that match up to the heads and have had glass packs already
welded on for straight pipes. Brodix 1000 Series High Rise Intake, Holley
750 Double Pumper carb with fuel rail to match. Over sized air cleaner,
Mallory Dual Point Distributor, M.S.D. Ignition System, Accel Super Coil,
Moroso Motor Mounts. Water Pump, Electric Water Pump Motor, Flex Coolant Fan

Estimates are welcome because I have only cranked this motor on engine stand.
I have no idea. Bring it fellows lets see what you got!

 

First off there is no such thing as a 1969 Z28 350. All 1969 Z28's had 302s. Second you should not be asking how muchHP your engine will give you. When you build a performance motor you need to figure out how muchHP you want at what RPM range before you start. First you figure the air flow you will needand you pick your heads then you get and camgrind that will meet the flow requirment at the correct RPMs then and intakethat is designed for that RPM/flow range. If you are just bolting unmatched parts you better hope your one lucky fellow.

As for the guess I'll add in a few things you left out and a guess
8:1 compression ratio on pump gas running 8 deg total timing (about90 HP)

14:1 compression, Cam2 fuel running 34 deg total timing setup by a pro (450 HP)
Should be somewhere between there.
The fuel rail and duel point distributer is a nice touch.

 

this motor was already put together by a professional when purchased.
also i have been told it is a 350 z28 and have been told it could be SS.
b/c it was made december 68
here is my numbers on motor
somebody please help me figure this out
i might have been scamed!!!????

40 GM 3970010
Lt88 or L188
010
160
N
3

 

Its amazing what you can find out when you do a search on the internet.

http://www.compcams.com/Technical/Dy...74H-10_001.asp

And since the heads were designed for track use, I'm guessing your cam (airflow restrictions from your duration and lift) will be the limiting factor. A Chevy 350 with the 3.48-inch stroke, 4.00-inch bore, 0.015-inch deck height, 0.038-inch head gasket with a 4.000-inch bore, 67cc heads would only be about 9:1 compression, which is way to low for your heads.

Now say you were using 12cc dome top pistons with a slightly small head gasket and your in the 11:1 range. Obviously there is a lot going into building an engine.

It you bought it from a true professional, they could have easily given you a more detailed build sheet, blueprint, HP and Torque specs, etc.

Someone has to say it, you were scammed, well, at least lied to. There are no original Z28 engines other than the 302. It could have been a SS. Post a pic of the stampings.

 

You have been told,, prove it before i buy it!

 

1500 sounds a fair starter bid!