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PapaBear 10-15-2010 02:07 PM

4.3 tbi to carb
Hey guys is there an adaptor to go from tbi to carb on the gm 4.3?

03TJ 10-18-2010 04:18 PM

Yes, but it takes an entire intake to do it, not just an adapter. It is an easy job if you already did a swap. Its your lucky day, look up item 290483775209 on ebay, it is only 95 bucks.

Hitch 10-18-2010 05:59 PM

I bet you can sell the TBI and harness! Many off-roaders want those parts due to angle-running.

There are a few engines that can handle the TBI: 4.2 liter AMC is but one.


escort_gts 10-18-2010 06:02 PM

Why would you want to go to a carb? Fuel Injection is better IMO

Hitch 10-18-2010 06:08 PM


Originally Posted by escort_gts (Post 27794)
Why would you want to go to a carb? Fuel Injection is better IMO

Shhhh! Don't blow my chances of going TBI on my 4.2 I-6! I can machine the adapter if not able to find one!!!!

Seriously, he may be drag racing or using it in a boat.


PapaBear 10-19-2010 08:36 AM

tbi gm 4.3
I don't really want to go to carb, I am just considering the options that I may have. I will swap the cpi, intake, ecm, wiring harness for a tbi, intake, ecm, wiring harness, or I will sell the cpi set up. I cannot get the thing to work and I don't know why. Possibly because it is an obd2 computer system. But i defintely need to do something, this is taking way to long, and I am beginning to lose interest. Thanks for your input. Also, I have a 2.5 that was rebuilt about a year ago and has 25k miles on it, complete engine with the computer, for sale or trade, it came out of the 97 wrangler.

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