5 speed overdrive
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5 speed overdrive
I recently got a 1952 F-2 on the road, and I love it, up until it hits the 50mph wall. It has the standard spur 4 speed (B/W T196? T98?) with the emergency brake on the driveshaft; handle next to the shifter. I would love to get an overdrive, but putting a T-5 in it would complicate my emergency brake. What about Clark 5 speeds?
Do they bolt to the bellhousing?
Were they used in the F-7s?
Are they substantially bigger/longer than the 4spds?
Anyone ever try this?
Do they bolt to the bellhousing?
Were they used in the F-7s?
Are they substantially bigger/longer than the 4spds?
Anyone ever try this?
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From: Illinois
5 speed overdrive
with your truck being a F2, it is the rear gearset that is hurting your top speed. You didn't mention what engine you have. If it is a flathead, Speedway Motors sells an adapter to mount a T-5 5 speed. You will use the T-5 from a S10 because the shifter is mounted a few inches ahead of the Mustang unit's shifter. With the S10, you can keep your bench seat.
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5 speed overdrive
The truck is stock with the flathead V8. Thanks for the help but I specifically said I don't want to use a T-5 because of my emergency brake issues. I need information about the 5 speed overdrive transmissions that were available in the F-7 line. I have a 1954 F750 with a 5 speed overdrive and the trans looks awful big and I was wondering if anyone have ever attempted putting it in a smaller truck....
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5 speed overdrive
Hello,
I've just got a '52 F6 that I've been getting road-ready after sitting for a few years. Got it going and have driven it maybe 50 miles so far. It has the same tranny (T9), 4-speed spur-gear, and has a 2-speed rear-end, with 5.83 ratio in the high speed. So, like you, I can only get about 50 mph without winding the engine to much. I was thinking about hunting a Brown-Lipe 2-speed auxiliary trans to put behind the 4-speed. Not sure where the shifter will need to be, but if it worked it would give about a 28% overdrive, which would mean about 65 mph. Of course the 239 flattie might need headers and a 2-carb manifold to give a few more horses to help get there quicker. I posted this question a few days ago to see if anyone had any experience along this line and got no replies. Maybe I'll just have to find a trans and try it.
Or maybe your solution is better as long as it bolts up to the 239 bellhousing and you don't have to butcher anything.
Good luck.
Stan
I've just got a '52 F6 that I've been getting road-ready after sitting for a few years. Got it going and have driven it maybe 50 miles so far. It has the same tranny (T9), 4-speed spur-gear, and has a 2-speed rear-end, with 5.83 ratio in the high speed. So, like you, I can only get about 50 mph without winding the engine to much. I was thinking about hunting a Brown-Lipe 2-speed auxiliary trans to put behind the 4-speed. Not sure where the shifter will need to be, but if it worked it would give about a 28% overdrive, which would mean about 65 mph. Of course the 239 flattie might need headers and a 2-carb manifold to give a few more horses to help get there quicker. I posted this question a few days ago to see if anyone had any experience along this line and got no replies. Maybe I'll just have to find a trans and try it.
Or maybe your solution is better as long as it bolts up to the 239 bellhousing and you don't have to butcher anything.
Good luck.
Stan
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From: cape may
5 speed overdrive
i have a 51 F6. the truck has a sync 4 speed [ t98 ] and a two speed rear [5.83/ 8.11]. the truck had an 8 cyl flathead. i added a brownie aux trans model 5331 that gave me 28% overdrive. the engine couldn't handle the load and would not turn up when i shifted into overdrive. the truck did the same speed in overdrive that it did in direct.
i have since changed the engine to the big six [ 254 ci flathead]
the engine has electronic ignition and a holley throttle body. the truck will now run 70 on flat ground. the learning curve has been steep. i guess that the best all around overdrive would be around 15%
but that is just a guess.
the brownie aux trans is mounted in place of the center bearing on the drive shaft, with the front drive shaft shortned. i have the shift tower mounted just to the right of the drive shaft, just behind the trans. tim
i have since changed the engine to the big six [ 254 ci flathead]
the engine has electronic ignition and a holley throttle body. the truck will now run 70 on flat ground. the learning curve has been steep. i guess that the best all around overdrive would be around 15%
but that is just a guess.
the brownie aux trans is mounted in place of the center bearing on the drive shaft, with the front drive shaft shortned. i have the shift tower mounted just to the right of the drive shaft, just behind the trans. tim
Fleet Owner
Joined: Dec 2000
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From: Central PA
5 speed overdrive
I am looking at a '54 F-600 flatbed that has the 5 speed with 5th gear an overdrive. My shop manual says this light duty 5 speed gear ratios are 1st: 6.247, 2nd: 3.64, 3rd: 1.89, 4th: 1.00, and 5th: .798. What speed do you think this truck with the OHV V-8 would cruise at? Do you find this set up better than a 2 speed rear? Are these trans. rare?
Abe (currently with a '54 F-100 with the 3 speed column shift)
Abe (currently with a '54 F-100 with the 3 speed column shift)
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5 speed overdrive
>i have a 51 F6. the truck has a sync 4 speed [ t98 ] and a
>two speed rear [5.83/ 8.11]. the truck had an 8 cyl
>flathead. i added a brownie aux trans model 5331 that gave
>me 28% overdrive. the engine couldn't handle the load and
>would not turn up when i shifted into overdrive. the truck
>did the same speed in overdrive that it did in direct.
> i have since changed the engine to the big six [ 254 ci
>flathead]
>the engine has electronic ignition and a holley throttle
>body. the truck will now run 70 on flat ground. the learning
>curve has been steep. i guess that the best all around
>overdrive would be around 15%
>but that is just a guess.
> the brownie aux trans is mounted in place of the center
>bearing on the drive shaft, with the front drive shaft
>shortned. i have the shift tower mounted just to the right
>of the drive shaft, just behind the trans. tim
Tim,
You answered some of my questions about using the Brownie for some more speed. I wasn't sure the 239 would pull it either. So, maybe if I hop the 239 up a bit with headers, 2x2 manifold with 2 carbs, better ignition, and maybe up the compression with some head machining, I might get enough horses to pull it at about 65 or 60 mph. Any flat-head hot-rodders have any input? Appreciate others experience and expertise.
Stan
>two speed rear [5.83/ 8.11]. the truck had an 8 cyl
>flathead. i added a brownie aux trans model 5331 that gave
>me 28% overdrive. the engine couldn't handle the load and
>would not turn up when i shifted into overdrive. the truck
>did the same speed in overdrive that it did in direct.
> i have since changed the engine to the big six [ 254 ci
>flathead]
>the engine has electronic ignition and a holley throttle
>body. the truck will now run 70 on flat ground. the learning
>curve has been steep. i guess that the best all around
>overdrive would be around 15%
>but that is just a guess.
> the brownie aux trans is mounted in place of the center
>bearing on the drive shaft, with the front drive shaft
>shortned. i have the shift tower mounted just to the right
>of the drive shaft, just behind the trans. tim
Tim,
You answered some of my questions about using the Brownie for some more speed. I wasn't sure the 239 would pull it either. So, maybe if I hop the 239 up a bit with headers, 2x2 manifold with 2 carbs, better ignition, and maybe up the compression with some head machining, I might get enough horses to pull it at about 65 or 60 mph. Any flat-head hot-rodders have any input? Appreciate others experience and expertise.
Stan
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5 speed overdrive
I went thru the same thing with my 52 F3. The simplest appraoch to take in my case as I, like you, did not want to ditch the driveshaft brake, was to install a Dana 60 from a '68 F250. This was literally a bolt-in and the only mod was to shorten the driveshaft about 1.5". The 4.10 ratio I used is still steep enough for me not to bog off the line, but allows me to turn 2500 @ 60mph. A lot better than the 4.86 stock Timken axle. By the way I am running a slightly warmed flattie.
Crash boxes rule!
Jeff
52 F3 x 2
Crash boxes rule!
Jeff
52 F3 x 2
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Joined: Sep 2001
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From: cape may
5 speed overdrive
stan, after i found the stock 239 would not pull the overdrive,
i went to headers and a bigger carb. it helped but not enough to make me happy. i never tried duel carbs. before i tried the overdrive
trans, i had 900-20 tires on the rear. that gave me around 5 mph.
the 239 could handle that easy. tim
i went to headers and a bigger carb. it helped but not enough to make me happy. i never tried duel carbs. before i tried the overdrive
trans, i had 900-20 tires on the rear. that gave me around 5 mph.
the 239 could handle that easy. tim
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5 speed overdrive
Running the 9.00-20 is the problem with the 239
The six cylinders generate their torque @1200 rpm, the 239 @2000 rpm (which is good for me because that's where I want to get (60-70mph) With the bigger tires you probably lowered the rpms to the point where the 239 couldn't really handle it. The 239 should be a better engine than the H series, the M has more torque and would take more calc's to figure it out.
T=HPx5252/rpm
HP @ max torque for
H series: 41 lb-ft
M series: 48
R series: 68.5
The R series is producing more HP at the same torque as the H series, and even more than the M series, although the I'd have to see a curve to see where the M series torque is at 2000 rpm a straight line interpolation gives it around 195 lb ft. The M will definately be quicker to get up to speed.
Back to the five speed. I have some CCKW's (WWII 6x6) that have the 5 speed Clark overdrives, I guess models 205VO or 280VO. Would they bolt up, what bolts up? What exactly is the model of the spur gear trans? Do T98s bolt up? T18s? What about the 5spd overdrive transmission from mid 90's F150's? Or the 4cyl Rangers?
The six cylinders generate their torque @1200 rpm, the 239 @2000 rpm (which is good for me because that's where I want to get (60-70mph) With the bigger tires you probably lowered the rpms to the point where the 239 couldn't really handle it. The 239 should be a better engine than the H series, the M has more torque and would take more calc's to figure it out.
T=HPx5252/rpm
HP @ max torque for
H series: 41 lb-ft
M series: 48
R series: 68.5
The R series is producing more HP at the same torque as the H series, and even more than the M series, although the I'd have to see a curve to see where the M series torque is at 2000 rpm a straight line interpolation gives it around 195 lb ft. The M will definately be quicker to get up to speed.
Back to the five speed. I have some CCKW's (WWII 6x6) that have the 5 speed Clark overdrives, I guess models 205VO or 280VO. Would they bolt up, what bolts up? What exactly is the model of the spur gear trans? Do T98s bolt up? T18s? What about the 5spd overdrive transmission from mid 90's F150's? Or the 4cyl Rangers?
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