TBI to TPI ?????'s

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Mar 30, 2001 | 10:08 PM

RyanSS

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Joined: Jan 2001

Posts: 389

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From: Abilene/Lubbock, TX

TBI to TPI ?????'s

Any of you guys done the TBI to TPI swap?
Anybody got pics or know if there is a manual or at least a good resource to help with the swap? I just bought a TPI system off an 89 Iroc 305, I got ECM, wiring harness, fuel lines, fuel sender, manifold, runners, plenum, TB, various nuts and bolts. The guy i got it from at the junk yard said if I needed anything else off the car i could get it.

My question is what do i take off my 89 RS when i take off the TBI, and how do i tell which wires go where? Also, what sensors do i need, besides an MAF (it was missing off the donor car)? How hard would it be to convert to SD? What other parts do i need?
Any help will be GREATLY APPRECIATED!!!

Thanks.

Mar 31, 2001 | 02:40 AM

Dan87IROC-Z

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Joined: Feb 2000

Posts: 1,196

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From: Fort Collins, Colorado

My friend did this on his 89 RS last summer. Him and his dad used that TBI/TPI Swappers Guide that is sold in Summit and Classic Industries.

------------------
1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Performance Resource Chip, Accel Ignition Coil, Cap, Rotor, 8.8mm Wires, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET (w/o LT4 cam): 14.32 @ 97.7mph
(corrected for elevation)

Soon to Come: 7.625" 10 Bolt with 3.42s and Accel TPI Intake Base