3.8 series 1 supercharger adding- in originally SC car.... - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 11-05-2012, 08:24 PM   #11
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Not sure what needs to be done with the Series 1 or if its even possible.

Series 2
Heads need to be swapped.
LIM needs to be swapped.
A couple pulleys added.
The L67 harmonic balancer(because of the 2nd built in pulley)
Fuel rail
Fuel injectors
Transmission(because the 4T60-E isn't designed to handle the abuse even from a L67)
Miscellaneous nuts/bolts brackets etc.

From what I have have heard, if you keep the existing L36 PCM on a top swapped engine, the PCM runs the engine way to aggressive with the current settings. Normally this needs to be tuned for the different injectors/amount of air coming in, different compression ratio, boost bypass etc. It may appear to be simple just by swapping parts around, but it gets very technical with the software. I don't even think a L67 PCM would run the engine correctly either.
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