T19 to ZF5 1986 F250

[IDIBRONCO]

We can use PSD flywheel, clutch and pressure plate behind IDI with ZF and it will fit/work/not vibrate from balance issues?

The 6.9 and 7.3 IDI have the same bolt [pattern for the flywheels so it will work behind a 6.9. The PSDs use 10 bolts for the flywheel while the IDIs use 9 so they won't work on a 7.3PSD.

No. You can't use a PSD flywheel behind a IDI because it will not bolt up due to the different number of bolts. That is unless someone's done it and I don't know about it.

 

[franklin2]

Wait what? We can use PSD flywheel, clutch and pressure plate behind IDI with ZF and it will fit/work/not vibrate from balance issues? I hadn't heard that. I think I have PSD flywheel somewhere around here from when I got my ZF.

I am reading that the PSD has 10 bolts that hold it to the engine, and a IDI has 9 bolts that hold it to the engine?

 

[IDIBRONCO]

I am reading that the PSD has 10 bolts that hold it to the engine, and a IDI has 9 bolts that hold it to the engine?

Yes. That is correct. Some of the IDI flywheels and flexplates do actually have 10 holes, but #10 is a lot smaller than the others and is NOT a bolt hole. It's there because some of the early crankshafts have a locating dowel on the back of them. I only mentioned that because if I didn't, someone would say that theirs has 10 bolt holes and post a picture.

 

[Nero]

Just because it is a hole, doesn't mean it is for bolts

 

[onetonjohn]

I am reading that the PSD has 10 bolts that hold it to the engine, and a IDI has 9 bolts that hold it to the engine?

I was thinking 10 pressure plate bolts... Order is restored to the universe.