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Re: Bellhousings for GM small blocks
The biggest concern would be all the electrical stuff. You'll need a PCM for the 5.3, and all the wiring/sensors. On some vehicles, the engine won't even start if there is a bad/no signal from other computers (BCM, TCM, several others), so there is a chance you'd have to put in several modules that you can't even use. I think the 5.3 bellhousings are smaller in diameter then the old ones. You would also need a high pressure fuel pump.
If it were my truck, I would just replace the cracked bellhousing.
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'04 Cavalier coupe M/T 2.2 Ecotec
Supercharged 14 PSI boost, charge air cooler, 42# injectors
Tuned with HP Tuners
Poly engine/trans/control arm bushings
Self built and self programmed progressive methanol injection system
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