a friend of mine has got a 86-87 305 tpi firebird to which he has added headers cai and a host of other modifcations inc suspention but can only get low 15,s out of the car he has just bought a 91 gta parts car (the body is rotten no floor or rocker panles) with a 350 tpi motor in it that he wants to fit into his firebird i know this will fit but what else will he need from the parts car to compleat the converetion ie ecm and motor wiring harness ?
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http://www.pontiacdriversclub.co.uk/ keeping it pontiac in the the uk. 93 formula a4 ZR1 rims
C A I , B M R torque arm lower arms panhard rod and sub frame conectors borla adjustble with Q T P valve and no cat WHAT NEXT ?
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Yes, he will need the ECM & wiring harness. The harness that is on his car now will not work because his car has a MAF TPI system & the GTA has a MAP TPI system.No F-Body right now -
It would be easier just to convert the 350 to MAF than to change all of the harness and ECM, all you need it a 350 eprom to put in the PCM and swap the motor and your done. You may want to change out the Plenum from the 305 onto the 350 but it isnt a requirement, you will just have an extra sensor not hooked up (MAP). I'm running a MAP plenum on my 89 MAF car and it has no effect on the performance.
Eric W.
89 Firebird Formula WS6
Accel/Lingenfelter Super Ram
6.2L/382.97 ci
Custom PROM Dyno tuned
WCT-5 speed
BW 9-bolt Posi 3.45
Boss MS 18" Rims
Headman Headers 1 5/8 Ceramic Coated
Custom Dual exhaust
1LE upgrade
Custom Temperature / Navigation Rear View Mirror
In a constant state of upgrade!
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Im glad this topic came up because I have been thinking of a 305TBI/350TPI swap myself. Facts are that as much as my 92 means to me, because of the 126,xxx miles on her and that she is (of course) not all original, she wont be worth alot until years from now. Plus whatever I get for her I'm gonna put towards a 2000+ SS one day. So I dont want to drop an expensive crate in her or a LS1 cuz there no sense in putting that much money into a car I wont get it out of or keep forever. SO.........I want more power and a 350TPI is were I want to get it. And I want some 4.10's so I can really feel it too!
Now all I gotta do is find one.......
1992 RS 25TH Anniversary (with Heritage package) A4 305 TBI (L03), Mobile 1 Synthetic, Flowmaster 80 Series Cat-Back, 17"x 8" Cragar style rims(painted grey)/Hankook Ventus 245/45Z17....350 Coming One Day......Comment
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