GTO MN12 vs F-Body Tick Stage 2 T56 Can & Should I swap? - Pontiac GTO Forum
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post #1 of 1 (permalink) Old 01-05-2015, 02:50 PM Thread Starter
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GTO MN12 vs F-Body Tick Stage 2 T56 Can & Should I swap?

Ok here is the situation and why I am asking to avoid any possible questions.
I am in the middle of swapping an LS into my FRS, I had a Corvette that on Dec. 4th got hit in a hit and run and totaled. Because of this I bought another vehicle settling on a GTO because the LS2 in it would be a better choice over the Modified LS1 that was going in the FRS.
The Vette had a brand New 408 Stroker in it and I have a Tick Stage 2 F-Body T56 sitting here for the FRS. I now also have the LS2 and GTO T56 (MN12). I know the gear ratio's are different but I was concerned with the GTO MN12 handling the 408 Stroker when I have a Tick Stage 2 sitting here but I have read they are different. This brings me to my main questions.

1) How much will the MN12 hold power/torque?

2) Should I go through the effort, losing the gear ratios for the GTO but gaining them for the FRS to put the Tick Stage 2 in the GTO?

3) Just what exactly (pictures would be nice) has to be swapped?

4) Also how badly does this switch negatively effect the GTO's gearing and speedo?

I have been searching and I get mixed reports, it does seem the GTO Trans can be swapped in F-Bodies with a GTO Starter or an F-Body Housing. What I am not clear on is the shifter mounting if you can just swap the F-Body one. However I am not finding a lot about putting an F-Body Trans into a GTO beause most consider the GTO trans to be a better one and are not in the position I am.

So while I am sure I have not found everything or the right search combination I have been looking and would just like to get some additional help figuring this out so I can make it happen.


Denny Crane /Rotary = Fail\ Capsule ER
05 GTO 408 Stroker \ 13 FRS LSx Swap (IP) / 02 Camaro SS 6.0L Chey's \ 14 F-150 5.0L / 96 MX6 M-Edition
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