1990 RS Camaro TBI to TPI swap - Hot Rod Forum : Hotrodders Bulletin Board
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Old 07-06-2003, 11:11 PM
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1990 RS Camaro TBI to TPI swap

A few quick questions about my swap over, i have a wiring harness that came out of a 1986 camaro tpi, the exact harness that goes to the tpi setup that is going in the car, i know were each senson goes, but were the harness ties in under the dash, will that be a direct plug in replacement from were the tbi harness was, and do i have to change anything. Another question is, my car now has the VATS with the chip in the key is that going to pose a problem with anythign im doing and am i going to have to bypass the VATS? Another question is the Spark controll module, fuel pump relay and any other senson under the hood that is currently part of the tbi setup, with that all work with my tpi that im putting in, or am i going to have to buy new replacement sensors? Thanks alot for any info

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Old 07-07-2003, 07:41 PM
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this might help
TPI to TBI
http://5finger.8m.com/tpi2carb/tpi2carb.html

TBI to TPI
http://exit3.i-55.com/~davidlt/tunedport.htm

this will help also
http://www.syty.net/phpBB/links.php

If your going to swap your garb might as well go one step further and swap it out with a LT1
http://www.popularhotrodding.com/tech/0803phr_beast/
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Old 07-08-2003, 11:22 PM
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thanks alot D M N my bro is doing the same thing for his 89 firebird LS6. he went crazy when i showed him that!
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Old 07-12-2003, 05:04 PM
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so whats the progress on your car
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Old 07-28-2003, 09:31 AM
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so did you ever swap it??
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Old 08-07-2003, 02:38 PM
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???
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Old 09-09-2003, 07:17 PM
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Engine is done

the engine is finished im waiting on the heads, im still a little puzzled about the wiring harness i cant figure out if it will be a direct plug in or not, i have heard from some people that you have to change a few wires around and other say it should work without modification. another thing i heard was that the high pressure fuel lines on the tbi and tpi are the same and you dont have to change them. If anyone can give me definate answers on the wiring harness it would be appreciated
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Old 10-11-2003, 02:54 PM
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Re: Engine is done

Quote:
Originally posted by Camaro2Fast4u
the engine is finished im waiting on the heads, im still a little puzzled about the wiring harness i cant figure out if it will be a direct plug in or not, i have heard from some people that you have to change a few wires around and other say it should work without modification. another thing i heard was that the high pressure fuel lines on the tbi and tpi are the same and you dont have to change them. If anyone can give me definate answers on the wiring harness it would be appreciated
i have never heard of the fuel line thing i think they will be the same i would still upgrade them anyways i mean they are 17 years old. I dont know about the wirring harness i think the tpi wirring harness will work
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Old 01-03-2005, 08:42 PM
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im swapping from a v6 to v8 tbi and need the wiring harness and ecm and was wondering if u were interested in sellin it that stuff....and i also need the accessory bracket for the alternator, tensioner pully, and p.s.
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