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Will 89 tpi parts fit a 86tpi setup

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Old Feb 18, 2010 | 11:59 AM
  #1  
intmdatr3's Avatar
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From: North Central Wisconsin
Car: Monte Carlo SS
Engine: 305 W/TPI
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Axle/Gears: 3:73 Posi
Will 89 tpi parts fit a 86tpi setup

I was given a 89 tpi setup and I am running 86 setup. It has slp runners will they fit my current setup.
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Old Feb 18, 2010 | 01:31 PM
  #2  
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Re: Will 89 tpi parts fit a 86tpi setup

So far as I know there are two types of TPI...... 85-89 and 90-92. IIRC all the parts from the same vintage manifolds will interchange. Besides that the only difference is that corvettes all used one fuel rail and camaros/firebirds all used another. Corvette fuel rails terminate on the passenger side and camaro firebird fuel rails terminate on the driver side.
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Old Feb 18, 2010 | 03:07 PM
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The runners should fit.

'89 didn't have the cold start injector like the '85-'88 MAF systems did. But that's in the plenum.
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Old Feb 18, 2010 | 04:25 PM
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Re: Will 89 tpi parts fit a 86tpi setup

If you have an 86 setup, 89-92 runners will work, but youll need to plug your fuel rail where the 9th injector comes out of. And you will need an 89-92 plenum as well.

Is this all correct?
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