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| | | | Joined: Feb 2021 Posts: 87 'Bolter | | 'Bolter Joined: Feb 2021 Posts: 87 | Folks, got a 216 stovebolt with 3 spd transmission torque tube rear, gearbox has a crack and leaks, differential also leaks, all original engine/transmission/diff to the ute.
I have a 55 open drive diff in my shed for a conversion to open drive
Does anyone know what’s involved in fitting the Packard 35-37 3 speed up to my engine, been told it was a common conversion back in the day
Steve
Last edited by Gdads51; 01/19/2026 3:40 PM. Reason: add detail to title to help with information search
| | | | | Joined: Apr 2005 Posts: 2,102 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,102 | I can't imagine how many 35-37 Packard transmissions there are still left in captivity
but it's unlikely it would be a bolt in. Things to consider would be having the clutch gear
the same length and have the same spline as your existing clutch. Would the mounting
for the transmission to the bellhousing be similar. Also what type of output shaft would be
needed. What other fabrication and or machining would be involved. It sounds like a lot
of work and expense for minimal gain.
Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
| | | | | Joined: Sep 2009 Posts: 6,045 Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT | | Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT Joined: Sep 2009 Posts: 6,045 | Simso - Here's a 2005 discussion in the HAMB forum that mentions some folks using the 35-37 Packard 3 speeds behind a couple different engines. A couple mentioned were specifically Stovebolt 6 engines and one detailed some info about the fabrication/use of an adapter plate. I found it using the web search "1935-37 Packard 3 speed transmission". You might find more on the subject in a search of your own.  Hope this might be of some help. 
~ Dan 1951 Chevy 3 window 3100Follow 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)
| | | | | Joined: Jan 2008 Posts: 4,964 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,964 | I have a 270 GMC with a Packard transmission behind it. It uses an adapter plate. These adapters were sold 70 years ago, but it would be difficult to find one now. But a machine shop could build one. | | | | | Joined: Oct 2021 Posts: 6,968 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,968 | Johnny Cash's famous A-dapter kit!
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
| | | | | Joined: Feb 2021 Posts: 87 'Bolter | | 'Bolter Joined: Feb 2021 Posts: 87 | Thanks for the link, I actually google searched before posting, maybe here in Australia some pages get excluded from searches, very informative link | | | | | Joined: Sep 2019 Posts: 167 'Bolter | | 'Bolter Joined: Sep 2019 Posts: 167 | Thanks for the info on this match up. I can’t imagine that there would be much difference between the’37 and’40 Packard transmissions.
I invest my money in precious metals, mostly rust!
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