Pasd
A couple of things to consider. I have 700r4's in both my cars - the Nomad makes 486 ft pounds of torque at the rear wheels. Running a Currie 9" Ford with 3:73's...
I'm using a BowTie Overdrives Stage III in that car. This thing shifts firm without snapping your neck on up or downshifts... but stomp the loud pedal and it shifts in a big fat hurry! I love it. I'm running a hi tech converter from them that is a hibred they offer. It's 2800 stall I think... that allows the engine to idle without a load and spin up just a bit to move the car.
When I was at the plant (BTO) I asked about the electronic trans - and they said basically "why" -- the 700r4 is the same thing without the electronics - for half the money. They're right. It works great and the only thing that's important is the set up of the TV cable -- and there is plenty of info out there to help with that. It's not rocket science.
Don't go with the 4L80 etc --- those trannys eat lots of HP to run them... again there is info on the web somewhere if you search - for the tech specs and the comparisons of the HP used up by the various transmissions. TH400 uses WAY more than a TH350 -- and with a 327 -- you're not going to want that big of a trans. You might also want to check in on the 200r4.... cheaper and can be bought to handle way more HP than you're going to make.
You'll also want to consider - the total - or actual - gear ratio / tire size / tranny gear ratios to get your cruise RPM's etc. There are calculators on the web that will do comparisons for you... Search Smoke em Up . com -- for automotive math. It's amazing what tire size does to your RPMS/cruise speed!
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