Not sure what kind of "adapter" you mean? Are you looking at changing your truck from a column shifter to a floor mounted style (mounted to the transmission case/tailshaft housing) shifter, or something else???
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
Actually the easiest way to do that is to replace the closed drive shaft SM318 3 speed with a later open drive SM318 from a Task Force truck.
From my previous thread reading, I'm pretty sure others have done that very swap. Perhaps those that have will chime in with their experience and input?
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
Find a 1955 or later transmission from a Chev pickup or passenger car. It will have an open drive shaft and it will be a better transmission. The old "peanut" transmissions were never offered with an open drive shaft and no one ever produced one.
Since you'll need to fabricate a custom driveshaft anyway, try swapping to a Saginaw 3 speed with a synchronized 1st. gear. With a little creative fabri-cobbling on the shift linkage you'll still be able to use your original column shift setup.
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
Slm, I see that you are a few posts shy of graduating from "Moderated Status". Make a few more posts so that we can exchange via PM. I have exactly what Hotrod Lincoln is describing. A 1965 Saginaw 3 speed transmission with all of the shifter arm and shifting linkages modified for tree on the tree in an AD truck. Send me a PM once you are no longer in moderated status for more info.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
BTW - Your next post won't require moderation approval, so you'll be able to send 52Carl a PM if your inclined to pursue his offer to share information.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
A good machine/welding shop could fabricate a conversion to open driveline for your original transmission, but the cost and labor time would be considerable. Swapping to a later model transmission would definitely be a better option. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!