I have a 4 speed Richmond Transmission that I got with a 1972 442 W-30 and it has the casting numbers 71-80024. What transmission is this exactly? Thanks!

 

Richmond four speeds come in at least four different varieties , depending on low gear ratio .
The various low gear ratios are 2.43 , 2.64 , 2.88 , and 3.42 to 1 low gear .
The transmissions are identified by "rings " or radial grooves cut into the input shaft splines .
Count he number of those or post a clear pic of the input splines and someone can ID it for you .
The casting number means nothing . All Richmond T-10 's use the same case .

 

The motor and trans are all together so it isn't that important to me to know the ratios. Thanks!