Borg Warner super t10 in place of 3 speed

[geezer#99]

Leave the crossmember in place with the bh and hang the t10 onto the bh. The t10 is 20 lbs lighter than the Saginaw.
Depending on your t10’s first gear ratio you might be losing some gear reduction.

Another thing is to check the input shaft bearing housing diameter.

[MikeB]

Originally Posted by geezer#99

Leave the crossmember in place with the bh and hang the t10 onto the bh. The t10 is 20 lbs lighter than the Saginaw.
Depending on your t10’s first gear ratio you might be losing some gear reduction.

Another thing is to check the input shaft bearing housing diameter.

Very good advice. I was also thinking about input shaft spline count. The T10 is 10-spline like the Saginaw, but I just read that the Super T10 has 26 splines. I also read that the Super T10 has a larger output shaft diameter, which probably means a different yoke.


As for gear ratios, the Saginaw 3-speed has at least three different gearsets. The base six-cylinder engines have the lowest first gear ratio for better torque multiplication. The 292 six (and later the 305) got the next lowest, and then the 350 and big blocks got the tallest.