TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

tbi swap

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Old Mar 16, 2014 | 04:09 PM
  #1  
nate perron's Avatar
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From: hillsboro aka hillsburito Oregon
Car: 83 berlinetta
Engine: 305 roller motor
Transmission: th350
Axle/Gears: 10 bolt 3.08
tbi swap

hi I just came into posession of a tbi system from a 4.3 v6.
how hard would it be adapt it to run a 5.0 v8 the v6 was in a 1989 s15 jimmy
and it would go in a currently carburated 83 camaro
any advice would be appreciated.
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Old Mar 17, 2014 | 07:49 AM
  #2  
RBob's Avatar
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: tbi swap

Not too difficult. Need larger injectors and an ECM calibration for an 8-cylinder. Some of the ECMs were used on both 6 & 8's, so an 8-cylinder calibration should be available. Others were only used on 6's, so an ECM swap is required.

The only thing to keep in mind is that tuning is going to be required. The GM TBI systems, with the exception of Caddies, ran SBC engines with swirl port heads. A '83 SBC is not and will require more spark advance to run right.

RBob.
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