1984ttopz28

I have an 84 camaro z28 that I built a 400sbc for, it pushes 325 hp 400+ftlb torque . The car had a 350turbo when I bought it but I'd like to swap to a 700r4 but there aren't many people parting out a 3rd gen in my area right now but I also have an 86 chevy c10 that has a 700r4 in it. My question is will this transmission work? I have not looked to see if it has a long tail shaft or a short tail shaft but I can tell you my best guess is it has a long one being the truck is a long box. The 350turbo is doing me just fine right now but not having over drive on a longer road trip really kills the pocket book and limits the top speed by a long shot. Any tips or advice would help.

ziggy89

im pretty sure all 700r4s had the same length tail shaft. th350 had a long and short tail. only thing the truck wouldn't have is a torque arm mount like a thirdgen 700r4

1984ttopz28

You know I did not think of that. My trans mount is goobered so I guess I should ask does the torque arm mount to the tranny or the crossmember?

ziggy89

Mounts to the trannynin most case . I would highly recommend a cross member mounted torque arm tho. Spohn makes a nice tubular piece .

jmd

iTrader: (4)

A 2WD truck 700R4 has the right output shaft.

Bolting the F-body tailhousing on gives the torque arm mount. But, mounting it to the crossmember is a good idea.

1984ttopz28

Thanks guys the information helped a lot

sofakingdom

iTrader: (1)

Getting an aftermarket torque arm setup that attaches the TA to the crossmember, instead of to the trans, is a TERRIFIC plan. Especially for a high-torque large CID motor. Frankly I'd be very surprised if a 400 would make as little torque as just 400 ft-lbs.

1984ttopz28

Yeah with my set up I do believe it has 480 ft-lbs and the hack that put the 350th in welded the ta to the crossmember (idiot) so I wasn't sure. I have ordered the tail housing and a new crossmember for now I will probably be switching to a crossmember mounted ta later on. So another question for you guys is I have a b&m megashifter in the car now and it is for a 350th, I don't imagine there's a way to make it work with a 700r4 right?

Ozz1967

iTrader: (4)

You could have used the tail housing from your old trans on the new one. Strait swap over. Just needs new seals.

I'm not real familiar with the Megashifter, but I know guys that are running 700's with it. It should just be a matter of hooking it up and making sure the shift points are good.

ziggy89

if you bought a console mount b&M for a thirdgen there is a pin to remove allows it to be used with a 4speed auto.

1984ttopz28

The tranny that is in the car now is a 350 turbo and that is what was in the car when I bought it so using the existing tail housing wasn`t going to work. Besides I found one for 40 bucks shipped. And if removing a pin is all i have to do this spring I will be set to improve mileage and top speed