Difference in TPI Runners?
12-18-2002, 08:52 PM
#1
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Car: 1986 Trans Am
Engine: LT1
Transmission: T56
Axle/Gears: 3.73
Difference in TPI Runners?
Been lookin' at High-Flo Runners and have noticed something..
When looking up part numbers for them, I've come across 2 different sets.. one set for '85-'88 and another for '89-92..
Any reason for this? I would have assumed they'd be the same for all years..
When looking up part numbers for them, I've come across 2 different sets.. one set for '85-'88 and another for '89-92..
Any reason for this? I would have assumed they'd be the same for all years..
12-18-2002, 10:08 PM
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Car: 1990 Iroc-Z
Engine: L98
Transmission: 700R4
That's it yeah the presence of a coldstart injector
(extra little runner to an extra little injector - so cute)
FYI - you can use the set with a cold start injector, becase very little modification is needed to make it work for 89-92's.
(extra little runner to an extra little injector - so cute)
FYI - you can use the set with a cold start injector, becase very little modification is needed to make it work for 89-92's.
12-19-2002, 12:43 PM
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Car: 1986 Trans Am
Engine: LT1
Transmission: T56
Axle/Gears: 3.73
Ok so either one would work i just would need to do a little mod for the 89-92 right ?
Would there be any benift in doing this ?
Would there be any benift in doing this ?
12-22-2002, 07:16 AM
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Car: 1989 Corvette
Engine: 350 Tpi
Transmission: ZF 6 speed
Axle/Gears: Dana 44 3,33
How much extra hp does the large tube runners give ?? No other mods than hedders is it worth buying these?
12-22-2002, 09:47 AM
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Car: 1991 Corvette Coupe
Engine: L98
Transmission: 700R4/4L60 same trans different name
Originally posted by Scania
How much extra hp does the large tube runners give ?? No other mods than hedders is it worth buying these?
How much extra hp does the large tube runners give ?? No other mods than hedders is it worth buying these?
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12-22-2002, 01:11 PM
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You must get the set that was desinged w/ your plenum. The early style runners had the cold start injector provisions, but also had the idle circuit routed differently. If you put new style runners on an older plenum, IT WILL NOT IDLE!!!! (ask me how I know). The older runners used the extra tube on the drives side as the idle circuit, whereas the newer runners are delete the tube on the drivers side. Get the runners that match your plenum.
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