Swapping out 373s to 331s???

[Bluelightning]

Tuner doesn't work on our cars, you have to use Forscan and update the BCM. Values are listed here.

Rear Axle Ratio (XXXX = ratio in hex) Enabled BCM 0726-12-01 XXXX xxxx xxxx
Rear Axle Ratio (3.15) Enabled BCM 0726-12-01 013B xxxx xxxx
Rear Axle Ratio (3.31) Enabled BCM 0726-12-01 014B xxxx xxxx
Rear Axle Ratio (3.55) Enabled BCM 0726-12-01 0163 xxxx xxxx
Rear Axle Ratio (3.73) Enabled BCM 0726-12-01 0175 xxxx xxxx
Rear Axle Ratio (4.10) Enabled BCM 0726-12-01 019A xxxx xxxx

If he's got the Whipple Tomahawk, it will do the update, no need for Forscan

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[Grintch]

See if someone is looking for the 373. Swap the whole housing.

And give away your expensive Torsen diff in exchange for a cheap clutch LSD.

Given the 2018+'s taller gearing, this swap is a lot less necessary than it would have been on a '15-17 car. Just look at all the people going to even shorter 4.09 gears.

 

[SVTSNAKE355]

Recently had whipple stage 2 installed on my 2018 GT PP1. I have been hearing from some of the mustang community out there that I should switch from 373s( from factory) to 331s.. Is that something I should consider.. My car is a 6 speed manual( just fyi).. I need some input from you all?? How much does that coat to have done.. Retuning?? Etc.

The 331 will help your top speed.

 

[Nagare]

If he's got the Whipple Tomahawk, it will do the update, no need for Forscan

True, I kinda skipped over the whipple part.

 

[jake_zx2]

If anyone here wants to trade their 3:73 rear pumpkin for a 3:55, I volunteer as tribute!!

 

[TURTL3]

If you want even taller gears, I have a loaded 3.15 pumpkin for sale.

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