Topic: Total spline input, with 21 spline 4.7 gearset? What do I need to bring the beef

[Thomas P]

Both of my cases and my adapter are toast. Basically I have 2 empty cases, and a MC 21 spline gearset. Since I need some new guts I was wondering what the best way to go was using the 4.7's i already have. Any t-case guys reading this?

[Duffil]

uhm...build a new set of cases, 4.7s in the back. not sure what you're trying to ask here. You looking for parts or???

you can only gain strength by going to 23 spline and/or changing your output shaft to either a cryo'd unit or the new 30MM MC unit.

[Thomas P [OP]]

can i go 23 spline in the front? the rear case will have the 4.7 gearset, which was in a 21 spline setup. i dont exactly know how it all fits together, i just know i have to totally rebuild the front case, and i wanna get the toughest stuff in it.

[Duffil]

can i go 23 spline in the front? the rear case will have the 4.7 gearset, which was in a 21 spline setup. i dont exactly know how it all fits together, i just know i have to totally rebuild the front case, and i wanna get the toughest stuff in it.

no, you can't do that. the front case has to match your trans.

 Maybe try to swap your 21 spline set for a 23 spline set OR you could run the 4.7s up front, and get a new 23spline coupler for your MC-07 and a turbo input and run stock 23 spline gears in the rear case.

easiest/cheapest is to run 21 spline front and rear, what you had before. If you want beef your gonna have to buy/trade at least 2 items.

[Thomas P [OP]]

well thanks for the info, i guess i will go back to the old setup, it should be fine behind my 22re