not sure it's age related, the truck 3 speeds need a larger center hole than cars, I have both car and truck Saginaw [68+] 3 speeds and the car ones have a smaller front bearing retainer

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics