todd_cole2002

I have a highly built 47RE with a suncoast output shaft in my 2001. I do a lot of pulling but always in 4-wheel low, with 3:54 gears. I just installed a dana 80 with 4:11 gears, should I stick with low or try high?

(MODS=lasered injectors (stage 10, said around 200hp gain?), HX40, AFE stage 2, big line kit, Dyno Sources Power box, 90hp computer reprogram, torque converter lockup, torque limiting eliminated)

LanceD

you are going to change the front gears to match right?

frostytj

If not please make sure to video the first time you put it in 4 high and/or low.

todd_cole2002

yes, i changed them both.

displacedtexan

I would stay in low... The axle gears are .55 lower, but low range gives you 2.72 reduction.

redstreak

Definitely stay in low. That will take a lot of stress off of your tranny. You mentioned an output shaft how about the input shaft - any upgrades there?? I would hope so.