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magnumv8 · 10-06-2009, 08:50 PM

I've run an 8.25 for years and never had an issue with it 12 sec.vehicle....over 1000 passes with the original suregrip and 4.56 gears (they are getting replaced now)..... Moser made me a set of alloy axles when I first built it and recently I picked up a locker for it for the rebuild....I guess the the main issues would be axle retention and the fact that you can run a little shorter driveshaft with the 8 3/4 allowing more rpm before driveshaft issues....

10-06-2009, 08:50 PM	#14
magnumv8 Member Join Date: Feb 2009 Location: Coraopolis, Pa. Posts: 172 Likes: 0 Liked 0 Times in 0 Posts	Re: Mopar 8 3/4 VS 8 1/4 I've run an 8.25 for years and never had an issue with it 12 sec.vehicle....over 1000 passes with the original suregrip and 4.56 gears (they are getting replaced now)..... Moser made me a set of alloy axles when I first built it and recently I picked up a locker for it for the rebuild....I guess the the main issues would be axle retention and the fact that you can run a little shorter driveshaft with the 8 3/4 allowing more rpm before driveshaft issues....