Cab and chassis f350 2wd to 4wd conversion

[Gary Lewis]

Gary has information about 335 series flywheel swaps from Tim Meyer if you want to go down the 5-speed path, but you'd have to change the pedal box and add a master cylinder.

Right. The bell housing bolt pattern for the M-block and 460's is the same, but the flywheel is about 3/8" farther back on the 460 than the M-block. So the ZF5's input shaft is too short to properly engage in the pilot bearing in the crankshaft on an M-block.

I designed an adapter that bolts to the crankshaft and moves the flywheel and pilot bearing back the needed amount, and Tim is making and selling them.

[ArdWrknTrk]

Gary has information about 335 series flywheel swaps from Tim Meyer if you want to go down the 5-speed path, but you'd have to change the pedal box and add a master cylinder.

Right. The bell housing bolt pattern for the M-block and 460's is the same, but the flywheel is about 3/8" farther back on the 460 than the M-block. So the ZF5's input shaft is too short to properly engage in the pilot bearing in the crankshaft on an M-block.

I designed an adapter that bolts to the crankshaft and moves the flywheel and pilot bearing back the needed amount, and Tim is making and selling them.

Link

[Gary Lewis]

Link

[WrenchingtheWretched]

Link

The plan would be to keep my 4 speed and do a divorced transfer case or find one that will bolt to the np435. I decided my vin a few weeks ago I forgot my axle ratio but I’ll go back through and get that info again.

[ArdWrknTrk]

The plan would be to keep my 4 speed and do a divorced transfer case or find one that will bolt to the np435. I decided my vin a few weeks ago I forgot my axle ratio but I’ll go back through and get that info again.

You'd need to find a new transmission output shaft and the 4x4 tail housing to 'adapt' a married transfer case to your existing 2wd NP435.

Then you'd need to completely disassemble and re-shim the gearbox to install it.

I'm not sure where you bolt the linkage or a divorced transfer case but I imagine you'll have to modify your own transmission crossmember and both drive shafts in that case.

Seems like a cool project.

Do you have a decent driveline shop in your area?

 

[WrenchingtheWretched]

You'd need to find a new transmission output shaft and the 4x4 tail housing to 'adapt' a married transfer case to your existing 2wd NP435.

Then you'd need to completely disassemble and re-shim the gearbox to install it.

I'm not sure where you bolt the linkage or a divorced transfer case but I imagine you'll have to modify your own transmission crossmember and both drive shafts in that case.

Seems like a cool project.

Do you have a decent driveline shop in your area?

There are a few! Lucky for me I live just a short drive from Charlotte,NC. Tons of race shops etc. and even a few local to me. Realistically I want this 1 ton to be 4x4 but with all the labor, parts and things I’ll have to do since it’s a cab and chassis I think I’ll just try and find me a 150 4x4 manual with a 300 inline I feel like monetarily I would have the same in it as building what I currently have. I may still do the swap but. I’m a little discouraged now with all the roadblocks

[ArdWrknTrk]

There are a few! Lucky for me I live just a short drive from Charlotte,NC. Tons of race shops etc. and even a few local to me. Realistically I want this 1 ton to be 4x4 but with all the labor, parts and things I’ll have to do since it’s a cab and chassis I think I’ll just try and find me a 150 4x4 manual with a 300 inline I feel like monetarily I would have the same in it as building what I currently have. I may still do the swap but. I’m a little discouraged now with all the roadblocks

C&C doesn't make the difference.

It's that you have a 2wd frame.

In a 250 and above the 4wd models need front leaf springs.

There are no radius arms to locate the front axle.

[salans7]

C&C doesn't make the difference.

It's that you have a 2wd frame.

In a 250 and above the 4wd models need front leaf springs.

There are no radius arms to locate the front axle.

I can attest, you're making the right decision. I don't know if I would want to go through everything I've done to make my truck what it is, ever again. But I also said that about my old F150, and then I went and 4x4 swapped my F350 too. At least the F150 was all bolt-in.