VIN look up gear ratio?

[shaun89]

my buddy is getting axles out of a 3+3 and we're just curious what ratio the axles are. its an ex. gov't truck so it might be 4.56s? could anyone look up this VIN? ive heard its possible to find out the ratio from it. ive tried and cant find anything. 1GCHK33M2GS190850

 

[sweetk30]

1 ton dana 60 should have the tag on the diff cover. but gm 60's had 3.73 / 4.10/4.56

and the crew cabs were gas motors in the mil trucks if i recall and prob be 4.10 mostt comon i have seen.

and i think its rpo codes you want. check the glove box tag . that will have the codes. and g80 = traction device in rear. not specific to locker or gov loc.

 

[jeff in co]

Here is a few.....

GT2 AXLE REAR 4.77 RATIO
GT3 AXLE REAR 4.55 RATIO
GT4 AXLE REAR 3.73 RATIO
GT5 AXLE REAR 4.10 RATIO
GT6 RATIO TRANSAXLE FINAL DRIVE 4.19 (USE OPTION FV5)
GT7 AXLE REAR 3.33 RATIO
GT8 AXLE REAR 4.10 RATIO