Need Help
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Need Help
Ok, I am taking a 4bbl carb 350sbc out of an 86 GTA and putting it in an 86 Iroc-Z. Now the Iroc has the 305TPI motor, what do I have to do to make the 350sbc 4bbl work in the Iroc-z? Do I have to swap over the computer or what?
Joined: Mar 2000
Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Welcome aboard thirdgen.org.
3rd gen carb'd cars never came with a 350. Was the original 305 replaced with a 350?
Is the carb computer controlled? If not, you don't need to switch the computer, because it's basically brain-dead anyway.
You will have to do something about fuel delivery. The TPI in-tank electric pump puts out too much pressure, so you'll either have to get a return-style regulator like the Mallory 4309 and knock the pressure down to 4-7 carb PSI (and it has to be a return-style reg or you'll burn out the pump), or remove the in-tank electric pump and use either an in-line electric or an engine-mounted mechanical pump.
3rd gen carb'd cars never came with a 350. Was the original 305 replaced with a 350?
Is the carb computer controlled? If not, you don't need to switch the computer, because it's basically brain-dead anyway.
You will have to do something about fuel delivery. The TPI in-tank electric pump puts out too much pressure, so you'll either have to get a return-style regulator like the Mallory 4309 and knock the pressure down to 4-7 carb PSI (and it has to be a return-style reg or you'll burn out the pump), or remove the in-tank electric pump and use either an in-line electric or an engine-mounted mechanical pump.