swapping from 305 to 350 tpi
12-28-2001, 08:44 PM
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swapping from 305 to 350 tpi
i was wondering would the stock ecm and chip from a 86 305 tpi be sufficient enough to run 350 with 24# injectors and afpr. If not what r some suggestion?
12-31-2001, 10:04 AM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
It will run it okay, but forget the 24# injectors - too big unless the 350 and the TPI are absolutely maxed out. The AFPR will allow the 19# injectors to work fine, although 22# (what the factory used on 350 TPIs) would run at a lower pressure.
Eventually, a custom programed chip would get more performance out of the engine, but that's true with the 305 as well.
Porting the plenum and base would help the 350 breathe a little easier. Shorter and bigger runners would allow it to run at higher RPMs.
Eventually, a custom programed chip would get more performance out of the engine, but that's true with the 305 as well.
Porting the plenum and base would help the 350 breathe a little easier. Shorter and bigger runners would allow it to run at higher RPMs.
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