85-89 and 89-91, plen and runners difference
10-25-2002, 05:28 PM
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Car: 1986 IROC-Z28
Engine: 305 TPI
Transmission: 700R4
85-89 and 89-91, plen and runners difference
Whats the difference between the 85-89 and 89-91, plenum and runners? And how do I know which to use? My 350 TPI is out of an 87, but i'm going to have the 88 and up serp belt setup. So is that going to make a difference? Also, I'm going with vortec heads and SDPC TPI baseplate. Figured i'd port my plenum and get bigger runners, but dunno which to go with.
10-25-2002, 05:43 PM
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Car: 1986 IROC-Z28
Engine: 305 TPI
Transmission: 700R4
LOL
**** sorry, I'm in the wrong forum. Ha! Meant to put this in TPI.
Sorry. Boss was comin, and rushed and forgot to switch forums.
**** sorry, I'm in the wrong forum. Ha! Meant to put this in TPI. Sorry. Boss was comin, and rushed and forgot to switch forums. 
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