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Untamed · 05-07-2008, 08:59 AM

The Iroc probably has TPI, right? So a straight swap shouldn't be a problem, just swap out everything from the 87 and remove the pieces from the 91, which includes the ECM (and maybe fuel pump).

Where does the TBI part come in? Are you contemplating TBI instead? If I recall correctly, TBI has 19lb/hr injectors and TPI has 24lb/hr injectors in a stock config. If you want better gas milage (for a daily driver or cruiser) then the TBI setup may be better for you. If you want quick off-the-line response for racing or street work, then the TPI (MAF, not SD) may be better for you.

05-07-2008, 08:59 AM	#11
Untamed Join Date: Aug 2004 Location: Hillsborough, NJ Posts: 3,200 iTrader: (1)	The Iroc probably has TPI, right? So a straight swap shouldn't be a problem, just swap out everything from the 87 and remove the pieces from the 91, which includes the ECM (and maybe fuel pump). Where does the TBI part come in? Are you contemplating TBI instead? If I recall correctly, TBI has 19lb/hr injectors and TPI has 24lb/hr injectors in a stock config. If you want better gas milage (for a daily driver or cruiser) then the TBI setup may be better for you. If you want quick off-the-line response for racing or street work, then the TPI (MAF, not SD) may be better for you. __________________ I USED TO HAVE an 85 Camaro 305 4bbl, 90 Firebird V6, 97 Firebird V6 (10 speakers!). Despite the two family vehicles, 3 kids, wife and mortgage, I can finally realize the dream - 88 TA almost all stock... for now. http://www.cardomain.com/id/untameddave Wanted this - , but ended up with this - for free. Can't argue with free.