davbell22602

Does anybody what direction I need to take in finding heads that will work with a 700CFM throttle body and bored 2in refurbished intake? Do need to have the stock heads fixed at a machine shop to flow with the 700cfm?

dirt track racer 81

iTrader: (45)

Ditch the tbi heads. they are junk, even ported they wont even turn 4500 rpm..

Manbearpig

iTrader: (1)

Theyll turn 4500 just not over 5500

stock48

iTrader: (16)

Look for a set of heads off of a 87~92 Z28, or 87~88 Carbureted Caprice 350. They don't have the cork screw, and will bolt up to your intake.

davbell22602

ok, thanks for all the responses and any future responses.

Manbearpig

iTrader: (1)

Haha I have some 193 FAILports off a 93 TBI truck on my K5

I want to rip them off, burn them and **** on them

davbell22602

What?

dirt track racer 81

iTrader: (45)

theyll turn whatever just wont make power beyond 4500..

oldred95

From a performance stand point they are best served as a wheel chock or a door stop depending on the size of your door. They did the job they were intended to do very well though. Fairly efficient design with good lowend power but for some reason those heads always spark knocked like no other. It was like having a couple of ball peen hammers running around loose under the hood.

The L98 heads are a decent option that will bolt up to the stock intake. Vortec heads are a lot better option but then you get into the whole what intake to run problem. AFRs or some other aftermarket heads are great but then you get into the whole how am I going to afford this problem and once that is sorted out the how am I going to tune this thing so it will even start and idle problem.

davbell22602

Summit recommended these http://www.summitracing.com/parts/WRL-043650-1/