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Old 09-06-2009, 11:55 PM   #1
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Default what supercharger?

im in the process of peicing together a top end swap, i thought i know what i was doing, haha jk, well i got confused to the fact, which supercharger?
when did they stop the m62 and start it?
when did they stop the m90 then start?
and the m90 has the longer snout? correct?
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Old 09-07-2009, 12:46 PM   #2
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yes the m90 has the longer snout and the m90 ran from 1996 - 2003 in the bonnevilles not sure on run dates for m62 however they sill use it on the cobalt and the g5 and ion
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Old 09-09-2009, 04:29 PM   #3
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on the bonnies the m62'* run on 92-95 SSEi models. I dont think they go older than 92 but could be wrong. but after 95 theyre all m90s on bonnies but yes the new cobalts use a m62 but i think its slightly different from the ones on the older bonnies... but not 100% on that

the main thing is to make sure your getting the right manifold and supercharger for the right year models, the blocks and everything changed between 95(Series I) and 96(Series II+)
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Old 09-10-2009, 07:44 AM   #4
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The Gen 2 M62 appeared on GM cars in 92 and ran from 92-93. Park Avenue, Bonneville and Riviera. This supercharger had no coating on the rotors and a 2.5" pulley stock and thermal coating on the exterior body of the charger.

The Gen 3 M62 replaced the Gen 2 for 94-95 years. This supercharger looked similar to the Gen 2 and had coating on the rotors. The coating on the rotors increased efficiency. There is external coating on the Gen 3 M62 as well as an external fin difference from the Gen 2, I forget which is which though.

The Gen 3 M90 took the M62'* place on the 3800 starting in 96 with the new motor design for the Series II. In 96 the supercharger body was coated with thermal coating like the 92-95 M62'* and had a vacuum tree near the throttle body end of the charger. 97 stayed the same except the exterior thermal coating was not present on the charger body. In 98 to current the vacuum tree was deleted and no thermal coating.

The Gen V M90 appeared on the scene in Grand Prix'* beginning in 2004, this redesigned M90 had a more efficient airflow and longer rotors than the Gen 3 causing it to run much cooler than it'* predecessor. The Gen V bolts right up to the LIM of a Gen 3 except for a slightly larger outlet opening. Different throttle body bolt patterns make an adapter plate necessary to swap from Gen 3 to Gen V.

The M designation is the amount of cubic inches of air per revolution that the charger moves. An M62 moves 62 ci of air per rev and an M90 moves 90 ci of air.
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Old 09-13-2009, 04:33 PM   #5
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well i have a 95 but its the series 2 engine. so the 96 series 2 lower intake manifold and the m62 should work correct?
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Old 09-14-2009, 10:52 AM   #6
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No, The M62 does not mate to the Series 2 LIM being that it'* considered the Series I supercharger.

M90
96+ SC LIM
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Old 09-14-2009, 11:14 PM   #7
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ok so this is what i need/ have to mate
have: m62
need: series 1 LIM ? even though i have a series 2 engine

im just worried about the supercharger LIM fitting my series 2, i have all the other parts or am getting them shortly
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Old 09-15-2009, 07:44 AM   #8
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I'm dying here.

A series 1 LIM and supercharger will not fit on a series 2 motor.. The heads and other things are too different.

Would you like a series 2 charger and series 2 lim? I have both if you need them.
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Old 09-15-2009, 12:32 PM   #9
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haha yes i need the LIM, i have the m62 charger from a 96? this is why i am so confused right now ha
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Old 09-15-2009, 02:11 PM   #10
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The M62 charger didn't come off a 96 anything that I'm aware of unless someone backwards swapped a motor. Tough to believe because the sensors etc are different enough to make it a pain.

What part of PA are you in?
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