Samman88;76520 wroteWell, depending on the depth of the AW bell, you'd make a thin adapter and then mill down the uniform overdrive section of the AW bell until you had enough input sticking out to sit in the spigot. It would be easy to make a raised ring on the bell side of the adapter plate to centre the plate on the auto bell. Drill the adaptor plate to mount the hydraulic throwout, shim to suit and call it a day.
- No expensive input extensions
- No machining of the m46 bell
- No hard to find M46 parts
- No mucking around with clutch fork
- Newer tech internal slave
You'd still have to shorten the tail shaft and adapt xmember,as with any swap.
Input shaft is only for 740s, and since you want a tremec 6 speed, its still works out to be not that expensive for a gearbox, even against buying a mustang box, as they are very rare in Australia. Which would cost more than using a modified input shaft EL falcon box.
The m46 bellhousing isn't machined. the sleeve is knocked out, reamed then installed back in. Or with a yoshifab kit. Is supplied to knock in. I have changeover cover plates too.
No mucking around is needed on the clutch fork.
M46 bellhousings are not hard to get. Its a lot more work to machine down an aw71 bellhousing for most people. Plus the bolt pattern would be cut away from the aw71 so there would be nothing to bolt too.
Plus you'd lose the length you need on the box to have it in the right position inside the car.
Newer tech? Better chance of failures and more annoying to order parts for most people also.
Adapting the crossmember is as simple as the section to the 740/940 crossmember auto mount.a 240 is harder.