1984 Chevrolet truck rear axle identification
 

Can someone please tell me what the gear ratio is on this 10 bolt? Stamped code is RUB. Thanks

Re: 1984 Chevrolet truck rear axle identification
 

No RUB code in the parts book for 1984, can you post a picture of it?

Re: 1984 Chevrolet truck rear axle identification
 

Not sure how to post pictures.

Re: 1984 Chevrolet truck rear axle identification
 

I think a picture is attached

Re: 1984 Chevrolet truck rear axle identification
 

That code doesn't show up for 1984 trucks, according to the GM parts catalog. RUB was used from 1978-80, 2.73 ratio axles. You could pull the cover and check the date stamped in the ring gear and also verify the ratio at the same time.

Re: 1984 Chevrolet truck rear axle identification
 

And change the fluid.

And change the ring and pinion to a 3.42 ratio.

(I'm kidding.)

(Mostly).

K

Re: 1984 Chevrolet truck rear axle identification
 

Thanks for the information. The guy told me it was out of an 84. I haven't seen it yet. I wanted to know the ratio before driving 50 miles. Your correct, it's not an ideal ratio. I have a 3.73 stock rear axle now with a Saginaw 4spd. A 308 would have been nice.😀 I don't know if this ratio will work. Thanks again.

Re: 1984 Chevrolet truck rear axle identification
 

This code may have been stamped Friday before 5:00pm .:uhmk:

I worked at a manufacturing plant and this stuff happens.;)

Re: 1984 Chevrolet truck rear axle identification
 

The engineering specifications guys were not above a bit of humor; we had a little firecracker that had design/release responsibility for the engine cooling system. Her name was Pam something or other.

The specs guys took the biggest radiator she was responsible for and assigned the pick code "PAM" to it.

K