Oh yeah! Got still a 700R4 in my workshop and I don´t know what do do with it . Sounds very interesting.
Greetings from Germany, Richard
Got the adapter plate from Bendtsen's in Ham Lake Mn. 763-767-4480 firstname.lastname@example.org ($415)This is for the 429 no mods necessary. Use your flywheel and starter. Now remember guys I have a 65 Hearse it had the TH400 so I'm just going to assume your mount system is the same as mine. The 700R4 is a little wider then the 400 so you might have to notch the floor on the side of the fuel pedal only about 2in X 2in. I remade my crossmember just using 3 in channel iron instead of the original trans mount. The channel get mounted under the frame not on top, I welded 2in angle on the side frame and drilled more holes so there is 4 bolts on each side holding up the new crossmember welded a 1/4 in kick plate off the front of the channel for the transmission mount, transmission mount is from an 81 Corvette. I have a split driveshaft, had a new one made to fit ($185) The torque converter is a lock-up you can hook it up a few different ways, mine is hooked up so when you put the brakes on it unlocks or you can put in a separate switch and manually do it. Your exhaust will have to be re-routed, whatever carb your running make sure you have all the adapters for the de-tent cable to be aligned properly as this controls shifting. Will all this be worth it. I assume the fuel milage will increase but to run down the highway at 70 and only turning 2200 RPM will sure help the engine. Well have to go back to work now putting a 25 gal gas tank for an 85 Balzer in it now. I kept everything and can convert back but I doubt I will.
Took the Deadsled out yesterday with the 700R4 what a difference seems like a different car any one not wanting to keep a factory correct car, I would recommend this to you. When weather gets nicer and I start driving more will give you updates on mileage.
I'm located in Illinois