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Slap shift conversion

Old 03-22-2019, 03:51 PM
Logan Thompson
Thread Starter
Join Date: Mar 2019
Location: OH
Posts: 1
Default Slap shift conversion

Hello, I'm new to this forum not sure if there is already a thread on this. I recently bought my fiance a red 2005 Mustang base. We have made plenty of mods to make it truly hers. I'm trying to look into switching the standard automatic to a slap shift. Theoretically it shouldn't be a big deal. Since a slap shift is based on an automatic transmission it should be a simple hardware swap with some rewiring... Only thing is I cant seem to find a kit (compatible hardware). I was wondering if anyone has done this yet and what they used to do it.

I'm sure I'll get the, "you should have bought a better trim or newer year" The reality is I was not in the position to do so and this was a deal I couldn't pass up.
Logan Thompson is offline  
Old 03-23-2019, 02:15 AM
5th Gear Member
Join Date: Jan 2018
Location: Pennsylvania
Posts: 2,251

There is no slap-shift for the S197 mustang, but the Thunderbird and Lincolns switched to the
5R55S that had the Select Shift in 2003. The 5R55S without the Select Shift is used in the 2005
and later models of the ford Mustang.

With the mustang, you can start in 1, 2, or 3, if the selector is in one of those positions. It
won't even shift of you hit the rev limiter.

TCI made the StreetFighter Ford 5R55S Ratchet Shifter, that's the best you'll get.
08'MustangDude is offline  
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