Are all TPI runners the same?
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Joined: Apr 2006
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From: Morganton, NC
Car: '92 T/A WS6 Vert/1956 Chevy Nomad
Engine: 350 TPI
Transmission: 700r4 w/ Transgo Kit
Axle/Gears: 3.42 LSD
Are all TPI runners the same?
I have heard that 85-88 runners are different than 89-92 runners ... is this accurate? I need to replace mine and I have found a set but it is off of an 86. Thanks!
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Joined: Mar 2003
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From: under the hood
Car: 92 Z28 heritage
Engine: 5.0 TPI
Transmission: T-5
Another cosmetic difference is the finish on the runner itself. The Corvette runners and the LATE 92 F-car runners both have the rough wrinkle finish, whereas all the other thirdgens have the smooth finish. My 92 Z28 had the wrinkle finish because it was built in july of 92. Personally I like the rough finish better than the smooth finish, it matches the rest of the TPI finish very well.
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Supreme Member
Joined: Apr 2006
Posts: 1,206
Likes: 4
From: Morganton, NC
Car: '92 T/A WS6 Vert/1956 Chevy Nomad
Engine: 350 TPI
Transmission: 700r4 w/ Transgo Kit
Axle/Gears: 3.42 LSD
Mine was built in April 92 and has the smooth runners. Strange.
fisherbody86 ... I think you can safely say that you have one of THE LAST third gens ever produced. July 92!!!! Wow.
fisherbody86 ... I think you can safely say that you have one of THE LAST third gens ever produced. July 92!!!! Wow.
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
My 87 has on it runners that do not have the cold start injector. When I first put them on I was baffled to why the car would not run, it would start and immediately die. What was happening is not only is the drivers side small tube for the COld start injector it is also the plumbing for the IAC.
Once I figured it out I took my Throttle body and milled out the center section like a 89-92 style Throttle body. Now I can run either set of runners.
I am not sure if the intake base on the 89-92's have the provision to actually install the drivers side runners from the 85-88 style. It would not surprise me either way, as I believe all they did was cover the hole in the base because IIRC there is a bolt that goes in the area anyways. I have an 89 Intake in the back I can peek at if I get time.
l8r
John
Once I figured it out I took my Throttle body and milled out the center section like a 89-92 style Throttle body. Now I can run either set of runners.
I am not sure if the intake base on the 89-92's have the provision to actually install the drivers side runners from the 85-88 style. It would not surprise me either way, as I believe all they did was cover the hole in the base because IIRC there is a bolt that goes in the area anyways. I have an 89 Intake in the back I can peek at if I get time.
l8r
John
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From: North Central Indiana
Car: 86 IROC
Engine: 383
Transmission: TKO 600
Axle/Gears: 3.54 Dana 44 IRS
My 87 has on it runners that do not have the cold start injector. When I first put them on I was baffled to why the car would not run, it would start and immediately die. What was happening is not only is the drivers side small tube for the COld start injector it is also the plumbing for the IAC.
Once I figured it out I took my Throttle body and milled out the center section like a 89-92 style Throttle body. Now I can run either set of runners.
Once I figured it out I took my Throttle body and milled out the center section like a 89-92 style Throttle body. Now I can run either set of runners.
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