first ride in a TPI!
Thread Starter
Junior Member
Joined: Aug 2005
Posts: 19
Likes: 0
From: Wisconsin, USA
Car: 1989 Camaro RS
Engine: 5.0 TBI
Transmission: 700-R4
Axle/Gears: 3.42 open....3.73 posi soon
first ride in a TPI!
My friend just bought a 1991 Trans Am, with a 305 TPI...he told me to come over and get a ride in it, so i did and i am impressed! It was my first experience in a TPI and i am seriously thinking about swapping/converting my car to TPI. Can i stay with my 305 and just convert it by switching manifold, computer, etc..or do i have to swap in a new motor? What kind of price am i looking at for changing my TBI into a TPI??? And how diffucult is this going to be? Any input would be great, thanks.
Joined: Jul 1999
Posts: 1,992
Likes: 10
From: CT
Car: 1986 Camaro SC
Engine: 305 TPI Procharged D1SC
Transmission: Tremec TKO-600
Axle/Gears: Moser 12 Bolt 3.73 posi
it's been done, i'm doing it from a carb to tpi, do a search there's tons of info
Member

Joined: Jan 2005
Posts: 353
Likes: 19
From: Ft Myers, FL
Car: 92 Firebird Conv
Engine: 305
Transmission: T-56 w/3.42 Posi
i'm doing tbi 2 tpi
you need a bunch of parts like
43psi fuel pump (same as v6 MPFI) ~$65 autozone
19# injectors
tv kickdown cable
wiring harness
773 computer (also can get from v6 MPFI 91-92) ~$20-30 from junk yard
305 auto (AUJP) memcal from gmpartsdirect.com
305 tpi knock sensor
Good luck!
you need a bunch of parts like
43psi fuel pump (same as v6 MPFI) ~$65 autozone
19# injectors
tv kickdown cable
wiring harness
773 computer (also can get from v6 MPFI 91-92) ~$20-30 from junk yard
305 auto (AUJP) memcal from gmpartsdirect.com
305 tpi knock sensor
Good luck!
Joined: Jul 1999
Posts: 1,992
Likes: 10
From: CT
Car: 1986 Camaro SC
Engine: 305 TPI Procharged D1SC
Transmission: Tremec TKO-600
Axle/Gears: Moser 12 Bolt 3.73 posi
305 auto (AUJP) memcal from gmpartsdirect.com
Junior Member
Joined: May 2004
Posts: 84
Likes: 0
From: Sesser, IL
Car: A Black One
Engine: 383 Chevy
Transmission: Retro T56... :>)
I'm not sure he'd need a new wiring harness. Didn't I read somewhere here you can re-pin a TBI harness to either a SD or MAF TPI harness?
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