Guest polarity Posted August 29, 2002 Share Posted August 29, 2002 Reading this board there are alot of acronyms used.. I was curious as to what some of these mean? SBC TPI HEI Thanks Billy Quote Link to comment Share on other sites More sharing options...
Mikelly Posted August 29, 2002 Share Posted August 29, 2002 SBC = Small Block Chevy TPI = Tuned Port Injected HEI = High Energy Ignition (I'm guessing on this one) Another one... TBI = Throttle Body Injection Hope this helps... Mike Quote Link to comment Share on other sites More sharing options...
Guest greimann Posted August 29, 2002 Share Posted August 29, 2002 Just to expand on that a little. TPI typically refers to the induction system that is found on '85 to '92 Camaros and Firebirds. It has those curved runners that connect the upper air box to the lower plenum. Another acronym, MPFI - Multi-port fuel injection is generically referred to as a system that has an injector at every intake port, which could include TPI and the later LT1 style systems. LT1 being a Chevrolet option code and really doesn't stand for anything. Quote Link to comment Share on other sites More sharing options...
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