351 swap, not an engine question
#1
351 swap, not an engine question
My 292 is really tired, it seems to be more expensive to rebuild it then grab a 351 to put in it. Ive searched on here and google, but i cant find quite what i want to know. I dont want an automatic, its out of the question. It seems most the people swapping this motor in go with an automatic. What manual transmission can i use? My truck is a 1959 f250. its 2wd, are the 4wd trannys different? I read something about a toploader 4-speed not being ideal for a truck due to the first gear ratio? one post had a comment along the lines of "unless you have a 3.98+ rear end and dont do freeways, its not ideal for a truck". I have a 4.56 rear and would like to freeway cruise so? thanks guys.
#2
oh, and the reason i ask about the 4wd difference is because i can get a ford BB 460 motor for cheap but it comes with a manual 4wd tranny. i have a 2wd truck so i dont know if i could even get a 2wd manual tranny for the 460? im more concerend with tranny options then the engine. thanks.
#3
You want a 4x2 trans. The tail on a 4x4 trans is meant, in most cases, to bolt to a transfer case. That isn't going to work for 4x2.
The 351w can accept just about any Ford issued manual trans. You will find it mated to the ZF 5 speed in later model PU trucks.
The car performance 4 speeds have a 2.78 first gear, or 2.32 if you get a close ratio. 4th is 1:1.
The ZF has a 5-something first, and an OD 5th, imo better for trucks like yours.
The ZF uses an integral bell and an internal hydraulic throwout bearing. Your truck already has a hydraulic clutch, right?
Some fiddling will have to be done to marry the '59 master to the later model throwout, but a little trial and error never hurt anything but the pocket book.....
If you go with the 4 speeds, you will have to find a later SBF/butterfly pattern bell that will accept the hydraulic slave for the throwout. 1983-4 and up F series would be the target, with the 300/302-351w.
Domestic Truck Tranny Guide
The 351w can accept just about any Ford issued manual trans. You will find it mated to the ZF 5 speed in later model PU trucks.
The car performance 4 speeds have a 2.78 first gear, or 2.32 if you get a close ratio. 4th is 1:1.
The ZF has a 5-something first, and an OD 5th, imo better for trucks like yours.
The ZF uses an integral bell and an internal hydraulic throwout bearing. Your truck already has a hydraulic clutch, right?
Some fiddling will have to be done to marry the '59 master to the later model throwout, but a little trial and error never hurt anything but the pocket book.....
If you go with the 4 speeds, you will have to find a later SBF/butterfly pattern bell that will accept the hydraulic slave for the throwout. 1983-4 and up F series would be the target, with the 300/302-351w.
Domestic Truck Tranny Guide
#4
Awesome!!! exactly what i wanted to know! i like the sound of the zF 5 speed from later trucks. what years had them? what models? and yes! i have a hydraulic clutch, all i would need would be new hose i would think. i can get windsor mounts from my catologue but im guessing ill need to fab up a tranny mount correct?
#5
The 351w can accept just about any Ford issued manual trans. You will find it mated to the ZF 5 speed in later model PU trucks.
Domestic Truck Tranny Guide
Domestic Truck Tranny Guide
#6
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Nope.. different engine family so different belhousing bolt pattern. With the axle gearing you have you really need a trans with overdrive so you should look for a late model T5(Mustang), M5OD(F150), or ZF-42(F250/F350) from a vehicle with a 5.0 or 5.8 V8 or 4.9 I6. All these 5-speed transissions have an 0.8:1 OD ratio and the ZF also has a deeper first gear ratio.. but that's not going to be necessary with the gearing you have.. you'll be skipping 1st a lot anyway.
#7
My pick wouldd also be the ZF. I have one mated to a 300 and love it. Also the lighter duty Mazda 5 speed from the F-150 and light duty F-250 would bolt up too. It isn't a bad transmission except it has an insanely high reverse ratio. Backing a trailer up even a slight slope requires slipping the clutch. There were a few other 3+1 overdrives Ford used in lighter duty pickups and vans too. I have a couple examples. One is basically a cast iron toploader 4 speed that they did a little monkeying with and came up with overdrive. Another one is an aluminum top shift style but I can't remember the model of it. They were used late 70s to mid 80s IIRC.
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