Clark 250/251 5 speed.

willowbilly3 · Post by **willowbilly3** » Thu Dec 13, 2007 2:15 pm

In 1960 you could get on of these 5 speeds in an F-350, not sure of other years. Anybody ever seen one? Probably used in 1 1/2 ton trucks too. The 251 is overdrive.

averagef250 · Post by **averagef250** » Thu Dec 13, 2007 2:22 pm

I have a mystery clark non-OD non-synchro 5 speed from a late 50's Ford on the shop floor. If it's a 250 or 251, then yes, I have seen one.

two-bit · Post by **two-bit** » Thu Dec 13, 2007 11:48 pm

Hey willowbilly,
Do you have any more info on that Clark 5 spd?
Sounds like a trans w o/d that might work behind an FE

Two-bit

uboughtwhat? · Post by **uboughtwhat?** » Sun Dec 16, 2007 5:44 pm

Oh please, oh please, oh please see if this will really work!!

I am right at the point of trying to come up with an overdrive tranny option and if this is truly a 5 speed overdrive that will bolt up to the FE this would solve my problem, provided you can still find these......

Jeff

Redcap · Post by **Redcap** » Thu Dec 20, 2007 6:11 pm

The 250 is DD, 251 is OD. I have some more info here on Clark transmissions.

I'm still trying to find an oldschool 5 speed set up for FE/FT.

SuperTruck · Post by **SuperTruck** » Thu Dec 20, 2007 8:18 pm

Find a Clark 280VO and a FT bellhousing. Then either use a FT flywheel with the balance weight cut off and use a 12" clutch or get a FE clutch made with a 1-3/8" 10 spline hub. Instant FE 5-speed with OD.

willowbilly3 · Post by **willowbilly3** » Wed Jan 09, 2008 10:39 am

SuperTruck wrote:Find a Clark 280VO and a FT bellhousing. Then either use a FT flywheel with the balance weight cut off and use a 12" clutch or get a FE clutch made with a 1-3/8" 10 spline hub. Instant FE 5-speed with OD.

Isn't my bigshaft toploader a 1 3/8 10 spline? If so then a 1968 428 Cobrajet disc should work.

Good luck ever finding a 250/251. I looked forever back whan I was driving the 57 and only found the one and it wasn't for sale. Of course I wasn't savvy about what all school buses ect. might have had one.

kaptnkaos · Post by **kaptnkaos** » Wed Jan 09, 2008 1:29 pm

My Bus Olde Skool's got one... it works like a champ...

I might know where there is another one in a bus...
I am not positive which tranny is in the other bus, but could provide the contact info.
Send me a PM if yer interested...

KaptnKA

S

kawasakifreak77 · Post by **kawasakifreak77** » Wed Jan 09, 2008 9:35 pm

Would these 250/251's be in F-800's? My buddy has two of 'em, a '62 with a lincoln motor & a '64 with a FT.

willowbilly3 · Post by **willowbilly3** » Thu Jan 10, 2008 7:17 am

I think you would want a little heavier unit in an F-800, like a 280 series.

kawasakifreak77 · Post by **kawasakifreak77** » Thu Jan 10, 2008 7:39 pm

So where's the identification marks an these transmissions? I want to figure out whether any of my buddy's transmissions are overdrives, thanks.

The FORDification.com Forums

Clark 250/251 5 speed.

Clark 250/251 5 speed.

re: Clark 250/251 5 speed.

re: Clark 250/251 5 speed.

re: Clark 250/251 5 speed.

re: Clark 250/251 5 speed.

re: Clark 250/251 5 speed.