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06-05-2017
First off, will a Gen II 3800 GTP supercharger work with a Gen III engine? I know the last generation Grand Prix GTPs have 20 more horsepower (260 vs 240) but is that hp increase due to a different supercharger?
I'm considering a deal on a 2004 GTP but the supercharger needs a rebuild. There's a nice supercharger removed from a '99 Gen II GTP at a local salvage yard. The counter guy said the superchargers will bolt up to any Gen II or Gen III 3800 GTP.
Any help is appreciated.
Steve
06-05-2017
Can it bolt up, yeah but it's not that simple.
Series 3 motors have a different LIM, different PCV system and different throttle body. You'd need a series 2 LIM, throttle body adapater plate and other smaller things.
Why does the 04 car need a S/C rebuild? Are they sure it's not just the coupler than went bad and it sounds like rocks in a bucket at idle.
06-05-2017
Even if it really does have the bearings out, those probably cost less than a GenIII supercharger. Disassembly isn't simple. Also you'll need a press big enough of find a shop that'll press them out for you. The needle bearings can be a bear tho.
Honestly, I wouldn't go back to a GenIII just because Eaton really knows wtf they're doing and the GenV is a drastic improvement.
06-06-2017
Sseilmnop rebuilds snouts for a very reasonable price deffinately cheaper then buying a gen 3 and lim and throttle body adapter while managing to lose horsepower and reliability. First check the coupler its a 20$ part and 90% of the time that is the part that's broken. If it does actually need bearings replaced then hit up Sseilmnop and he will hook you up and then you have a supercharger that has brand new spanking seals and bearings that you know is going to last a long time.
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