I'd like to make a list of transmission options for the 400 and 351m. Please note If it's manual or automatic, number of speeds, granny first and/or overdrive, if it is a direct bolt up, requires an adapter/spacer, ect.

Big block C6 - automatic, 3 speed, direct bolt up.

 

C6 3-speed auto, no OD, came stock in 78/79 & 80's Broncos and 1970's- early 90's F150/250/350 pickups and 70's/80's full-size cars and vans. Comes in big-block and small-block bolt pattern, possibly FE pattern too. Has one-piece case so make sure you get the right one. Also comes in 2wd and 4wd tail section versions. Ratios- 2.46, 1.46, 1.00, rev- 2.18. Wide ratio sets are available for this trans too.

NP435 4-speed manual, granny low 1st, no OD, seperate bell housing, came stock in same trucks as above. 2wd and 4wd versions. Iron case/aluminum top, PTO. Wide ratios- 6.69, 3.34, 1.66, 1.00, rev- 8.26. Close ratios- 4.78, 2.39, 1.37, 1.00, rev- ?

Borg Warner T18A/T18/T19 4-speed manual, granny low 1st, no OD, seperate bell housing, same applications as the NP435, also in 2wd and 4wd versions. Iron case/iron top, PTO. Wide ratios- 6.32, 3.09, 1.69, 1.00, rev- 7.44. Close ratios- 4.02, 2.41, 1.41, 1.00, rev- 4.73. Mid ratio T19- 5.11, 3.03, 1.79, 1.00, rev- ?

AOD 4-speed auto OD, typically found in the small block bolt pattern, there may be adaptor available to put it behind a big block. One-piece case. I think this only comes in 2wd version but not sure. Ratios- 2.40, 1.47, 1.00, 0.67, rev- ? A wide ratio set can be swapped in from an AODE/4R70W, ratios- 2.84, 1.55, 1.00, 0.67, rev- ?

ZF 5-speed manual, granny low 1st w/ OD 5th. Has one piece aluminum case and comes in both small block and big block versions as well as 2wd and 4wd versions. Hydraulic clutch. Used behind 351W, 460, 6.9/7.3L diesels, 1980's & 90's. Several ratio sets for this trans...

New Venture NV4500 5-speed manual, granny low 1st w/ OD 5th. This trans was used in Dodge trucks and some GM trucks. There are adaptors to fit it to many engines and transfer cases, has lots of aftermarket support, popular swap trans for off roaders. Iron main case, aluminum top and OD tail section, full-synchro, PTO, seperate bell housing. The Dodge model is most widely used for swaps. Dodge ratios- 5.61, 3.04, 1.67, 1.00, 0.74, rev- 5.04 or 5.61 depending on model.

 

So the ZF 5 speed from a 460 would be a direct bolt on, but the 351W and diesels would not?

 

You are right.

 

I don't think the AOD was ever behind a BB type motor, larger bell pattern. The only auto with OD was the E4OD that was offered behind a 460 which shares the same bolt pattern as the 351M/400.

 

I see that this would fit a 351W, would it fit a 351M? What about the transfer case, front & rear driveshafts? Mine is a '78 F150 with a tired C6 and I'd love to swap in a stick.

 

The 351W has the small block bell housing and will not fit the 351M/400 or 460 motors because they have the big block pattern.

I have a 205 case mounted to a ZF which is behind a 460. It's just in a moc up stage right now so the complete install will not be done for a while. I even still have a little weldign to do on the cross member. You should be able to use the stock tranny pieces with a flat piece of steel or something like that. I opted to weld my set up. http://home.comcast.net/~grabblue65/78Bronco.html

The t-case moved forward about two inches so drive shaft work will have to be done. Not sure about the u-joint sizes yet because I haven't gotten that far.

 

[QUOTE=SoCalDesertRider]
AOD 4-speed auto OD, typically found in the small block bolt pattern, there may be adaptor available to put it behind a big block. One-piece case. I think this only comes in 2wd version but not sure. Ratios- 2.40, 1.47, 1.00, 0.67, rev- ? A wide ratio set can be swapped in from an AODE/4R70W, ratios- 2.84, 1.55, 1.00, 0.67, rev- ?

Would a 4R70W from a 92 E-350 Cargo Van fit behind a 400 in a 78 F 100 with a C6 2WD ?

 

A E-350 cargo van with a 5.8 engine.

 

5.8 in a 92 is a 351W small pattern so no.

The Borg Warner T-19 does not have a granny low, it has 4 synchronized gears and is started in 1st gear. It is found in buses and box trucks.

 

what 5 speed manual tranny can i swap into my 1977 4x4 f250(devorced tc) highboy.It has a 4 speed now with a 351m

 

Are you trying to keep the TC divorced? I haven't read nor seen any one do that yet but I would think running the 4x2 trans with the divorced case would be possible. Just not sure if things would be moved further up, back or stay the same.

A bolt up trans would be the ZF with the BB bell pattern which would only be found behind the 460. Not sure what flywheel you would need. I know people have done this but I can't recall if they used the stock 351M/400 flywheel or not. one would need to measure the depth of the teeth on the flywheel between the 460 set up and the 351M/400 set up and make sure the starter will engage correctly. the dia. would need to be the same as well. This would go for the 4x4 or the 4x2 ZF trans.

You could also look into a kit to install the NV4500 trans which would use your stock bell housing set up. Again you could make the 4x2 work with the divorced case or just run a 4x4 trans with an attached case.

No matter what you choose you will more than likely need to have new driveshafts made up, longer/shorter. With the Zf you would have to adapt a hyd clutch set up for the pressure plate. The NV4500 would use your stock clutch limkage set up.

 

If its a performance truck and not a hauler I will throw the toploader 4spd and 3.03 three speed in to the mix. They are both manuals, the 4spd was only used in cars the three speed was used in cars and trucks, both are much faster shifting than any of the truck transmissions and will stand up to a beating, don't know how they do towing never towed too much with one just a 4500lb boat with a 3.03 and it did great. You will need to look for 429 and 460 bellhousings and both share a bell.
-Johnboy

 

i have a '76 f-150 an i am building a little mud truck i have a 351m with a 400 crank in it and i need a trans. to go under there. the truck came with a manual trans in it and thats what i would like to stick to does any one have any suggestions for me

 

Im wanting to convert it from the stock c6 to a manual shift not planning on doing a lot of towing and just really rather have a manual shift but i couldnt pass up the price for it and the stock tranny is wore out so any ideas on a good transmission to convert to and what kind of mods and the little stuff will i need as far as fly wheel and drive shaft stuff like that