Quote:
Originally Posted by tommr
Yes. the BB Chevy engines fit fine. Not all that different than in size to the V6. The 8.0L has made its way into new production school buses and those bus builders have designed a accessory drive system that incorporates an air brake compressor. It makes the BB Chevy an attractive option and crate engine prices are good. That said a Duramax eliminates 85 gallons of gasoline from the bus. 06.5-07 LBZ is the preferred Duramax swap engine. Aftermarket wiring is available new and reliability and parts availability is excellent. The 2012 and later LML/LMM Duramax has very little swap support from the aftermarket. You cant run them without the emissions. An entire body harness is required to accomplish that swap. Not likely a harness and a computer is ever available. But who knows?
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What is used in school busses now is an 8.8 litre version not manufactured by GM. Though the block and components are supplied by GM the engines themselves are assembled by "Powertrain Solutions International" (PSI) to their specs and sold to Navistar for school busses. GM is going back into the medium duty truck business but will only market medium duty trucks as Chevrolet's, these trucks will be manufactured by Navistar under contract with GM. They will use a GM cab and powertrain on a International chassis, the Duramax Diesel will be the powerplant not the 8.1 or 8.8 litre V8. Word is GM is coming out with a larger 7.0 gas V8 based on the 6.0 V8, most likely a taller deck block.