If i throw on a b/l and some 33's, and i don't get a tuner or recalibrate, will it mess up my tranny? My truck is an 06 4.0 at if that helps. Sorry i know this was covered somewhere but i couldn't find a straight answer.

Tim

 

what gears you have

it will put a strain on the tranny but 33's are not too stress full

 

4.10 gears. I know thats low enough but with the tranny being all electically controlled and the speedo being off will that mess up shifts and stuff?

 

Your truck will shift fine. 33's and 4.10's is a good combo.

 

yep 33's and 4.10's is a good combo
but a good programmer,aka x-cal helps fix the speedo problem and shift points of your tranny

the thing about mods just one wont cut it its a combo of a few that make the real difference
mods=cash=hp and the butt dyno lol yada yada yada

 

you will be just fine... your speedo will be off by about 10 mph so at 70 you are really going 80