Will 3.31 ring pinion fit my 7.5 rearend? March 24, 2007, 02:23:54 AM I've got the stock rearend with 2.73 gears and I'd like to get a bit more green light get-up-n-go out of my H.O. This car is my daily driver so I don't want too much gear--especially with today's (AND TOMORROW'S) gas prices; My normal driving pattern is 80% street and 20% freeway (during rush hour). So, I'm wondering if the ring and pinion from a 2007 V6 mustang will fit my 7.5? Thanks. Quote Selected
Will 3.31 ring pinion fit my 7.5 rearend? Reply #1 – March 25, 2007, 06:42:29 PM Are you talking about just changing the gears or swaping the chunk?Because if you just change the gears there might be a difference in carrier size. but if you change the chunk you should be ok.louie Quote Selected
Will 3.31 ring pinion fit my 7.5 rearend? Reply #2 – March 25, 2007, 07:20:44 PM I am talking about just changing the gears...I thought all ford 7.5 rearends might be the same. Quote Selected
Will 3.31 ring pinion fit my 7.5 rearend? Reply #3 – March 25, 2007, 10:28:30 PM I thought all '05 and newer Mustangs had the 8.8", which would make sense considering that V6 models now make almost as much power as the Fox 5.0 did... Quote Selected
Will 3.31 ring pinion fit my 7.5 rearend? Reply #4 – March 26, 2007, 12:39:13 AM I have a set of 3.27 from a 7.5 out of a 1984 Mark VII I would let go pretty cheap Quote Selected
Will 3.31 ring pinion fit my 7.5 rearend? Reply #5 – March 29, 2007, 09:19:09 PM The new Mustangs still have 7.5" in the 6 cyl. but the GT's 8.8" are 31 splined. Quote Selected
Will 3.31 ring pinion fit my 7.5 rearend? Reply #6 – March 29, 2007, 09:35:36 PM You sure???I thought they stopped making the 7.5 rear???Went 3.27s in mine when i had it,it is the largest you can go and still keep the speedo accurate with a 21 tooth gear. Quote Selected
Will 3.31 ring pinion fit my 7.5 rearend? Reply #7 – March 30, 2007, 08:57:51 AM QuoteThe new Mustangs still have 7.5" in the 6 cyl. but the GT's 8.8" are 31 splined.That is correct. Quote Selected
Topic: Will 3.31 ring pinion fit my 7.5 rearend? (Read 1673 times)
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