What's the standard gear ratio for a 9 1/4 behind a 225 O/D manual?

[YY1]

My 1980 truck with the 440 transplant was originally a slant six with 833 o/d.

It has a 9 1/4.

There is no tag.

Much appreciated.

 

[Burt]

not sure but you could jack up the rear and put a mark on the tire and ground and then spin the yolk and count the rounds till the marks line back up and get pretty close.

 

[d5679]

Odd that it would have a 9.25 but things happen.3.55 was very common