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Will my gear ratio be on the vin?

9K views 7 replies 7 participants last post by  RobRamAZ 
#1 ·
Thinking of going to probably 4.56 since I tow a 8k lb 5th wheel. I want to know what is in it now. I just put 295/70/17 on it and want to gear down. Where can I find it? 07 1500 megacab Hemi
 
#3 ·
snemd me the last 8 of youe vin in a pm and i can pull up a build sheet for you
 
#4 ·
Jack up the rear end and count it. Axle rotation/wheel rotation=gear ratio

All this of course means you have already looked for the decal in the glove box first right?
 
#5 ·
Hemidogg Pm sent, thanks
Yes no sticker on the axle and no sticker on in the glove box
 
#8 ·
Get a build sheet or jack up the rear, put a mark on the driveline and a peice of tape on the wheel. Get to where you can see the driveline and spin the wheel slowing 360 and count the number of times the driveline mark goes around, 3.5 or 3.75 or 4 about then you know. Oh and if you wheel spin the same direction you have a LSD if they go opposite its open.
 
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