Finding my ratio

[78C10BigTen]

78 c10 2wd with a 10 bolt rear. How can i find out my gear ratio in my rear without peeling off the cover and counting?

 

[Honky Kong jr]

78 c10 2wd with a 10 bolt rear. How can i find out my gear ratio in my rear without peeling off the cover and counting?

RPO code?

 

[78C10BigTen]

RPO code?

Ive looked but i dont think it says

 

[flying2275]

If you have a open rear end, jack up one tire and spin the one tire and count how many times the drive shaft spins during 2 revolutions of the tire.

For a locking or posi jack up the rear end and spin either tire 1 revolution and count how many times the drive shaft spins.

 

[78C10BigTen]

Heres what ive got....

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[Honky Kong jr]

Ive looked but i dont think it says

Take a pic and post it. It will be a GXX code

 

[Honky Kong jr]

Heres what ive got....

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You got a Gov bomb lol yeah but no ratio that *****....

 

[Honky Kong jr]

Not to sound dumb but pull the cover I’m sure that gear oil hasn’t been changed in forever. The ring gear will be stamped and You will have to do some math but you will know and you would have serviced your diff. And don’t forget the posi fluid.

 

[78C10BigTen]

Not to sound dumb but pull the cover I’m sure that gear oil hasn’t been changed in forever. The ring gear will be stamped and I out will have to do some math but you will know and you would have serviced your diff. And don’t forget the posi fluid.

Posi fluid

 

[78C10BigTen]

You got a Gov bomb lol yeah but no ratio that *****....

So explain gov bomb lol i need to update my knowledge...

 

[78C10BigTen]

So is this tellng me my big ten was standard with 3.07? But option of 3.40 and 3.73?

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[Honky Kong jr]

Gov bomb it the style of limited slip unit used in 10 bolts. Gov lock and they will explode hense bomb

 

[Honky Kong jr]

Posi fluid

Yes small tube of additives

 

[78C10BigTen]

Gov bomb it the style of limited slip unit used in 10 bolts. Gov lock and they will explode hense bomb

Oh..... so dont go beating on it... great lol

 

[Honky Kong jr]

Oh..... so dont go beating on it... great lol

Pretty much that’s if it even still works