3 speed Transmission in a 65 F100

tomrooster · Post by **tomrooster** » March 21, 2007, 8:39 pm

Is the 3 speed Transmission in a 65 F100 6cyl the same as a 352 3 speed. Thanks, Tom

64 f100 · Post by **64 f100** » March 21, 2007, 11:19 pm

Good question, I will try to answere this without looking in my Hollander interchange book. The later 300 six, 302, and 351 used the same bellhousing, which was deeper than the FE family of engines. It wook a transmission with a longer input shaft. Now, I will look into the book and see what it says, as From what knowledge I have on the later engines it looks like the answere is no. Well, my book shows no distinction on 6 and 8 cylinder manual 3 speeds, so from that, I would guess the answere is yes it will interechange. Now, having said that, I'm wondering if it's possible to use the early 6 bellhousing to adapt an FE transmission to a later Windsor engine? If that is possible, then an FE 4 speed can be used on a 351w by using the early 300 bellhousing, maybe. Best bet for you is to measure the two input lengths and see if these are the same.

Hope this hasn't confused you even more,
Rich

tomrooster · Post by **tomrooster** » March 22, 2007, 7:39 pm

thanks for the reply , only problem is I don't have a transmission for a 352 and the one I have for a 6 cyl is still in the truck. Why I wanted to know is if they are the same I will put the 6 cyl trans into another truck that has a 352 with auto in it . Thanks , Tom

winr · Post by **winr** » March 25, 2007, 11:12 pm

I have a mostly stock "65" F-100 short slick, 3 on the tree and 352.

I took a driveshaft out of a "65" short slick with 3 on the tree and 6 cylinder and it fit right in my truck.

The length, yoke and u-joints were the same.

Does the trans in your 6 cylinder truck have bolts on the drivers side or bolts on the top??

Richard.

tomrooster · Post by **tomrooster** » March 26, 2007, 6:20 pm

The trans in the 65 6cyl. has the bolts on the top. Tom

winr · Post by **winr** » March 26, 2007, 8:20 pm

Hi Tom.

Does it look like the trans at the bottom of this page (the 3.03)

http://www.fordification.com/transmissions-manual.htm

EDIT:
Does the trans have a slip yoke versus a bolt on yoke?

What wheelbase are both trucks?

Second edit:
Oh, this may help:

Truck toploader 3 speed: 17" from bellhousing to end of tailshaft
First gear is sychronized.

Short wheelbase driveshaft: 61" center to center of u-joints (they may vary a bit)

Richard.

tomrooster · Post by **tomrooster** » March 27, 2007, 8:28 pm

Yes richard it looks like the 303. I couldn't see the yoke [truck is sitting to low] the 6cyl truck is the short wheelbase and the truck I want to put it in is the long wheelbase, both F100s
From the chart below the trans it appears they are different at least in gear ratio

winr · Post by **winr** » March 27, 2007, 9:48 pm

Aahh, I just noticed on the Fordification site.
The long wheelbase trucks show a fixed yoke ( they bolt on ).

I remember a couple of 1969/1970 long wheelbase trucks when I used for work had a 2 piece driveshaft with a carrier bearing bolted to the frame.
I cant remember if the yokes bolted on or not.

I forgot about this. (the stuff above, sorry)

Do you have the driveshaft from the long wheelbase truck??

Richard.

Hawkrod · Post by **Hawkrod** » March 28, 2007, 9:30 am

64 f100 wrote:Good question, I will try to answere this without looking in my Hollander interchange book. The later 300 six, 302, and 351 used the same bellhousing, which was deeper than the FE family of engines. It wook a transmission with a longer input shaft. Now, I will look into the book and see what it says, as From what knowledge I have on the later engines it looks like the answere is no. Well, my book shows no distinction on 6 and 8 cylinder manual 3 speeds, so from that, I would guess the answere is yes it will interechange. Now, having said that, I'm wondering if it's possible to use the early 6 bellhousing to adapt an FE transmission to a later Windsor engine? If that is possible, then an FE 4 speed can be used on a 351w by using the early 300 bellhousing, maybe. Best bet for you is to measure the two input lengths and see if these are the same.

Hope this hasn't confused you even more,
Rich

The depth of the bellhousing has no bearing on transmission length. The bellhousings can be all over the place (and are) because the crank flange sits in different areas inside and not all engines are the same. Ford trucks do use the same trans for most engines whether it is a 6 or an 8 and they all do interchange but on some years the 6 did get a lighter trans (especially overdrive applications). Car FE and truck FE is really the only place where there is a big difference and car FE trans are shorter as are the bellhousings but the truck division decided to make the truck FE bellhousing longer so they could use the same transmission on any application. Hope this explains it well enough, Hawkrod

tomrooster · Post by **tomrooster** » March 28, 2007, 9:04 pm

Well yes and no, I was going to use the 65 six trans if that worked but I also have a trans I took out of my Edsel and that has a 361 if the 6 cyl trans didn't work but I was going to use the 361 bell housing and trans but maybe that wont work out . I have my eye out for a stick setup from a 352 or 390 but they are hard to come by here in NJ. Thanks, Tom

douglloyd · Post by **douglloyd** » March 29, 2007, 8:10 am

I'm with Hawkrod. The bellhousing is the key piece. That's how Ford could offer all sorts of engine/tranny combos during the model year.

I pulled the 352 out of my '66 longbed (4speed) and replaced it with a '70's 302 that a local shop rebuilt. I had to reuse the bellhousing that came with the 302, but other than having to mount the engine back a few inches, everything bolted up.

On an unrelated note, nice to see someone else has an N. Pmail me offline if you want - I have two '52's and they work hard!

Doug

64 f100 · Post by **64 f100** » March 30, 2007, 9:25 am

Hawkrod, if I understand you correctly, your saying that a 390 car bellhousing is shorter than a truck transmission. This would mean if i am understanding right, that the toploader car tranny for a 390 will not work with the truck bellhousing as it woudl have to short an input shaft, right? I would need a Car bellhousing or a small block 4 speed to make the combination work?

Rich

Hawkrod · Post by **Hawkrod** » March 31, 2007, 9:01 am

64 f100 wrote:Hawkrod, if I understand you correctly, your saying that a 390 car bellhousing is shorter than a truck transmission. This would mean if i am understanding right, that the toploader car tranny for a 390 will not work with the truck bellhousing as it woudl have to short an input shaft, right? I would need a Car bellhousing or a small block 4 speed to make the combination work?

Rich

You have it absolutely correct EXCEPT there is another option. Ford manufactured an extra long pilot bushing for small blocks that can be used to put a 390 short trans behind a smallblock but I think it would work to put a car FE trans in a truck with a truck bellhousing. Many people have put car 390 trans in cars using truck bellhousings only to experience major pilot bushing failure as the input will barely touch the pilot bushing. Another option is to use a pilot bearing with an extension machined to fit the end of the crank (I used to make these myself, see the picture below). Hawkrod