Engine swap

[jvanwinkle89]

Hey guys new to thw forum. I am trying to swap a stock motor for a 98 tahoe to 350 carbureted motor. How can I do this. And what will I need? Thanks

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[SunlitComet]

so if this is going into a 1998 tahoe unless you are willing to spend $700++ on transmission controller parts alone, to say nothing of what is ahead if you do, forget it. besides just cutting the pcm out will kill the fuel pump control, a/c, tranny control, speedometer among various things and likely kill or severely hamper abs, steering, and 4wd system. just easier to buy an older truck.

 

[ltdan]

Don't forget that it will not pass emissions inspection if you have that in your area.

For on road use I would go the other way and drop a 5.3 or 6.0 in.

If it is to be for off road, then just get a 700r4 to go with it and elininate the stand alone tranny controller.

 

[SunlitComet]

you see i was thinking emissions would be the least of his worries.

 

[ltdan]

Lol probably. But should be the first issue to decide that determins wether to swap or not.

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[jvanwinkle89]

Im wanting to build a play truck but will drive back and forth to work

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[ltdan]

The definitely figure out wether you need emmisons to get inspected or not.

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[SunlitComet]

you can build a play truck out of a stock 98 with adding performance items with out going carb. hell if it is allowed in your state and you have 5 grand you can drop in an ht383e from gm performance. An entirely new block and parts and with a pcm recalibration and some add-ons such as a tubular exhaust system, hi-flow cats and cat back you will have plenty of fun. for work or play.

---------- Post added at 08:20 PM ---------- Previous post was at 08:20 PM ----------

oh and everything else would still work.

 

[jvanwinkle89]

Why cant you just add the motor and leave everything else the same.

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[SunlitComet]

you pcm controls or effect what i mentioned about. unless you can find a why to simulate the various sensors data outputs to coincide with a carbed engine frazier is going down big time.

---------- Post added at 10:33 PM ---------- Previous post was at 10:32 PM ----------

you are not the first to want to attempt this and you wont be the last to learn that it just is not feasible legally, financially or otherwise.