My 87 IROC has got the valve guide issue(smoke on start up) ......I can get a smokin deal on a set of fresh iron eagles off this circle track racer whose class rules changed and he no longer needs them........if I put these on would the motor fall on its face??......the motor is a stock 305 TPI.......hes also got an old set of "camel bump" heads for even less.....what about those???.....doug

What is the runner volume on the Eagles?

ooops. your engine is an '87. GM changed the intake bolts on that engine. You will have to modify the intake or the heads to run either head with your engine.

I had an 89. I honestly dont think you can do much with the 305 to improve it.
Just change the seals.
My $0.02
Gary

I had a Trans-Am back in those days with a 305. I swamped it out for a 350 and there was a major difference.

I have a ZZ4 that started to spin a rod bearing on about the 15th lap at Mosport. Ran one event prior at Shannonville.

I put a set of Iron Eagles (ex TIDA stock car) on my 350 motor in my 82 Blazer along with an edlebrock air-gap intake and 750 double pumper. Good torque and power, cam was some generic RV type cam I had laying around.

Is yours the TPI or four barrel?

Great link for F-body info
http://www.f-body.org/tech/tech.htm#ThirdGen

BTW these heads raised my compression to just over 10-1, so super gas is needed.