orange1500hd

iTrader: (8)

i read the sticky at the top about the input shaft swap on the t-case but if i bought a 4l80 with transfer case attached it would be drop in and i wouldn't have to re use my 4l60 transfer case, correct? from my research the 1500 and 2500's both use the np246 t-case. just wondering if theres any wiring difference or if im missing something.

bohr898

iTrader: (6)

the 2500 could have either the auto trac 246 or like a 261 or maybe 241 i dunno.... butt easy way to tell.. is if its a floor shift transfer case then it def not a 246..... but to answer ur specific question yes they are wired the same way.... there is no diff between the 1500 and 2500 246 t-case besides the diff input shafts..... 27 spline for the 4l60... 32 spline for the 4l80 but im sure you knew that

orange1500hd

iTrader: (8)

i have autotrac so its the 246 case. the reason i want to get a used 80e with transfer case is because i want to keep the stock 60e/transfer case untouched so if i want to back to stock it will be there ready. anyone done this?

bohr898

iTrader: (6)

yes it has been done and it will work

DrX

iTrader: (7)

I swapped in an 80E style 246 along with my 80E. Everything other than the input gear is the same except for the 6 pinion planetary assembly vs 3 or 4 pinion(depending on model year) for the 60E 246.

orange1500hd

iTrader: (8)

sounds good, il probably do this before i get the turbo on.

Neil 6.0

Are you talking about doing this to your 1500HD??

sharpshooter

iTrader: (10)

are the front and rear output shafts the same on the 1500 246 and the 2500 246?


is there really advantage going to the 2500 246 besides I won't have to swap the input shaft?

DrX

iTrader: (7)

I believe they are the same, but you will need a 2500 front DS anyway.

the 2500 246 has a 6 pinion planetary set vs 3 or 4 (depends on model year) in the 1500 246.