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Old 04-30-2009, 07:10 PM   #1 (permalink)
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Chevy engine replacement questions

My camper/tow rig is a 76 Chevy with a carbed 350. Long story short I ran it low on oil and smoked it. Now I want to replace it but it seems that I can find more EFI donor trucks than carbed ones around here so I figure maybe running EFI might give me a few MPG.

From searching through the Chevy FAQ (which is woefully lacking) I have noticed that the TBI motors are very common and pretty easy to setup. What years were the TBI motors and are they all the same or do some years have some differences that I want to avoid?

The truck has a TH350 transmission right now. Can I still use it or will the TBI motors not work properly with it? (electronic issues?)

And finally, if all else fails, is it possible to just switch a TBI motor to carb by swapping the intake?


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Old 04-30-2009, 09:58 PM   #2 (permalink)
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TBI was avaliable from 88-95.

And you can switch a tbi to a carb.

I am not much more help for solid swap info though.
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Old 04-30-2009, 10:39 PM   #3 (permalink)
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There have been lots of tbi swaps and conversions over the years. I would stick to the 7747 ECM, was used '89-'91 IIRC. Those are tuner friendly and there is lots of tech on the interwebs about them.

You can keep your th350, or swap to a 700r4 that has a lockup converter and overdrive. The ECM will run the lockup.
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Old 05-02-2009, 11:32 PM   #4 (permalink)
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Originally Posted by Crawlchevy View Post
TBI was avaliable from 88-95.

And you can switch a tbi to a carb.

I am not much more help for solid swap info though.
only a few intake manifolds work, i beleive only edelbrock and weiand make the carb manifold that works on that head. or you could try a normal manifold and figure out a way to wedge the intake bolts near the egr crossover port in the head.
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Old 05-04-2009, 02:54 PM   #5 (permalink)
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There was one year that was a tbi style motor with a carb intake. I have one of those stock intakes if you need it.
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