Originally Posted by LONGBOX55
The later 4 speed trucks generally used the SM465, which has a synchronized first gear.

Either you forgot to type 'non' or you are confusied.


BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022