landshark99
Bronco Guru
- Joined
- Oct 13, 2011
- Messages
- 1,401
So I have been wanting to swap in a ZF-5 into my early bronco since I got it and have finally started down the path to to do so.
I have a ZF-5 from behind a 460 locally that I will be acquiring soon (was driven and shifted in the vehicle) and finally got my list together with most of the parts needed. I have decided to post up a thread on the swap since its not too common and this is something I have never tackled before.
Even through the zf-5 has the same bell housing pattern as a 400 block there are some differences in regards to the clutch engagement and throw out bearing that requires some attention. I will have to have a spacer machined that will allow for near full clutch engagement and to house the pilot bearing, but the rest of the swap is mostly off the shelf parts. I will try to re-use as many of the 400 bits as I can as frankly they have about 2000 miles on them since the build but I of course expect some surprises along the way
I plan to reuse the external Hydraulic clutch assembly from the big block zf-5
Anyway heres the list so far compiled courtesy of Gary_Lewis over on the FTE forums
I have a ZF-5 from behind a 460 locally that I will be acquiring soon (was driven and shifted in the vehicle) and finally got my list together with most of the parts needed. I have decided to post up a thread on the swap since its not too common and this is something I have never tackled before.
Even through the zf-5 has the same bell housing pattern as a 400 block there are some differences in regards to the clutch engagement and throw out bearing that requires some attention. I will have to have a spacer machined that will allow for near full clutch engagement and to house the pilot bearing, but the rest of the swap is mostly off the shelf parts. I will try to re-use as many of the 400 bits as I can as frankly they have about 2000 miles on them since the build but I of course expect some surprises along the way
I plan to reuse the external Hydraulic clutch assembly from the big block zf-5
Anyway heres the list so far compiled courtesy of Gary_Lewis over on the FTE forums
- The 460 version of the ZF5
- A pressure plate that works with your 351M or 400's flywheel (if you are starting with a 400 flywheel then you can go with the larger pressure plate and, therefore, the larger clutch disc.)
- A clutch for a 460 (because the 460's clutches had the larger splines) that will fit under your pressure plate
- The adapter to space the flywheel back
- 7/16-20x1.375 place bolts to hold the adapter and flywheel to the crank. I got mine from Wilson Garner
- A pilot bearing for a ZF's input shaft
- Move the ring gear on the flywheel forward as far as it will go
- Use a 351W auto trans starter as it has the longest throw
- A throwout bearing that will work with the release arm. I used the Dodge unit show in the picture below (National Bearing #614114) About $60
- Either headers to clear the ZF on the passenger's side or a groove ground in the ZF's meaty flange that will let you get an Allen wrench on the inside bolt on the passenger's side. And, if you use the exhaust manifolds you will need to remove the inside stud on the passenger's side exhaust manifold and replace it with an socket-headed cap screw
- ZF to D20 kit ($379.99)
- ZF Crossmember ($129.99 ) or fab one up..
