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Old 09-01-2009, 06:44 PM   #1 (permalink)
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350 vortec tbi conversion?

i got a guy who wants me to take his 350 tbi out of his 94 burb, and swap in a 350 vortec tpi. i dont want to go through the mess of the harness swap and all that good shit. now, if im correct, i can just swap over a tbi vortec intake manifold and use the tbi on the old motor? and no need to swap harness's? is this correct? keep all the stock fuel lines and what not. and i would have to make up the egr, or scrap it?
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Old 09-01-2009, 07:42 PM   #2 (permalink)
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anyone? i just wanna find out soon, so he can buy the parts and i can make some mmoonneeyy
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Old 09-01-2009, 08:22 PM   #3 (permalink)
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i got a guy who wants me to take his 350 tbi out of his 94 burb, and swap in a 350 vortec tpi. i dont want to go through the mess of the harness swap and all that good shit. now, if im correct, i can just swap over a tbi vortec intake manifold and use the tbi on the old motor? and no need to swap harness's? is this correct? keep all the stock fuel lines and what not. and i would have to make up the egr, or scrap it?
Correct you can use the aftermarket GMPP TBI to Vortec intake manifold and the TBI unit will bolt on it. It has provisions for the EGR.
http://www.jegs.com/i/GM-Performance...oductId=750534
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Old 09-03-2009, 03:14 PM   #4 (permalink)
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The wiring would work good but how you going to tune the engine ?
You would need a custom prom chip to put in your PCM to make it run right !
I'm in the process of putting TBI on my Vortec and have everything covered except some body to burn me a chip.
Until i find somebody to burn one for me , i'm not going to be able to do it because i dont know how to burn chips and it would probally take 5 months to learn .
I'm not gonna spend 5 months trying to tune my vehicle , if i cant find someone that i can pay to make me a chip i'll have to go a different route!

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Old 09-03-2009, 05:09 PM   #5 (permalink)
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why would it have to be tuned, its going from a 350 tbi to a vortech tbi. as far as i know the only difference between the 2 is the heads and intake setup.
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Old 09-03-2009, 06:35 PM   #6 (permalink)
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Because the heads flow better and the Vortec has more cam !
This may sound like going backwards but i was thinking that mayby if you put the TBI cam in the Vortec it would be more compatible with the TBI prom chip and since the Vortec heads flow better mayby give it a little xtra fuel psi to compensate for the high flowing heads .
I dont know if this would work or not , just thought i would throw that idea out there and someone that knows alot about tuning will chime in.
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Old 09-03-2009, 06:52 PM   #7 (permalink)
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well he just needs the vehicle to be running, so as long as it doesnt run like horrible dick in dookey water with corn chips, i think it might be ok. ive never swapped a cam and i dont want to experiment on someone elses vehicle first.
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Old 09-03-2009, 07:08 PM   #8 (permalink)
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I would think that it would run decent without a tune but i cant tell you for sure since i've never tryed the swap before !
All i can say is i've done alot of research and alot of people say you need a tune and one guy with a camaro said his runs pretty good without a tune although he admit it could run even better with a tune and another guy with a chevy truck is running his without a tune and towing a trailer all around .
I'll give you a link to his experience!
http://www.fullsizechevy.com/forums/...at-expect.html
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Old 09-03-2009, 07:32 PM   #9 (permalink)
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fuck...i may just try n talk him into getting a 350 tbi instead of using the vortec, that sounds like more shit than what i wanna go through or he'll wanna pay for
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Old 09-04-2009, 09:22 AM   #10 (permalink)
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dynamicefi.com. Much easier than the traditionally burning and tuning of chips.
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Old 09-04-2009, 09:31 AM   #11 (permalink)
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dynamicefi.com. Much easier than the traditionally burning and tuning of chips.

Could someone that never tuned a car use EBL or do you need more knowledge?
Like what i'm asking is do they give you like a book with directions that are common sense where you dont have to try to figure stuff out for like 2 months?

Last edited by webcat; 09-04-2009 at 09:56 AM.
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Old 09-04-2009, 09:37 AM   #12 (permalink)
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here's the guy with the camaro link running stock tune! http://www.thirdgen.org/techboard/tb...bi-vortec.html
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Old 09-04-2009, 11:50 AM   #13 (permalink)
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Could someone that never tuned a car use EBL or do you need more knowledge?
Like what i'm asking is do they give you like a book with directions that are common sense where you dont have to try to figure stuff out for like 2 months?
You do get a guide with the EBL but you do still need to learn a bit about tuning to get the most out of it. Thirdgen is GREAT source for TBI info. If you are willing to leave some of the power on the table and just get a chip "burned" for you this guy has a good reputation. It may take him a burn or two to get it right however... good info on his site too.

http://www.tbichips.com/
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