Big John Posted March 1, 2012 Report Share Posted March 1, 2012 i would like to change out the gears in my g54 mighty max to a set of 390s. i did some searching but not been able to find any or what other vehicles will interchange. how about some help thanks john. Link to comment Share on other sites More sharing options...
IntercooledFlatty Posted March 1, 2012 Report Share Posted March 1, 2012 easies way is to swap chunks with a 3.90 MM. by sapping chunks you won't have to set the gears up again. i have several if you want to wait til PF or come pick it up Link to comment Share on other sites More sharing options...
Shelby Posted March 2, 2012 Report Share Posted March 2, 2012 mighty max's and D50's came with 3:54, 3:91 , but the raider & montero diff ring and pinion will fit that gives you a 4:22 and a 4:66for an auto trany truck i'd sugest a 4:22 if gas wasn't going to $5 or higheryou need to know if the raider and monterio is 4 cyl or v6 if you do some diging there is a thread that shows ALL ring and pinions that will fit and what they are out of , but it was a while back , any ring and pinion that will fit a quest will fit a mm Link to comment Share on other sites More sharing options...
StarquestRescue Posted March 2, 2012 Report Share Posted March 2, 2012 (edited) A 2.0 2wd or 2.6 5 speed short bed 4x4 should have the 3.9.0's. The 4.22 seem to have been more plentiful. On the 87 and newer. There is a tag under the hood with the gear ratio on it. http://i237.photobucket.com/albums/ff45/StarquestRescue/7400a7ad.jpg Edited March 2, 2012 by StarquestRescue Link to comment Share on other sites More sharing options...
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