so i have just been sitting around brainstorming because i am bored and got to wondering: 700r4s have pretty good gearing for automatics, have OD (i do not right now but really want it), and have a huge aftermarket following. is there a company that makes a kit to run one behind a SBF? pretty sure i have seen them in EBs, so it can't be too hard to do. any one got any thoughts on this?

i have an 89 bronco with a 351W

well looks like advance makes a kit, not much info tho. feel free to contribute...

Did you think about bolting up an AOD or E40D?

E4OD has a reasonable first gear and OD and can be built tough as hell. AOD can be too, seen many drag cars with them, and you could probably change the 1st gear to something deeper if need be.
What tranny do you have right now?

The C6 isn't cutting it anymore with those new tires Andy?

If you're bent on having OD, I'd look at the AOD first. You can build it up well enough, and it's the same length as a "long" C6. I figure the cost of a built AOD vs. a semi-built 700 plus adapters (front and rear) is going to be about the same.

Think long and hard about whether or not it's worth the money, tho. When I still had the 5spd, I did a little experiment -- drive a tank of gas without ever using 5th, then drive one using 5th whenever I could. It didn't make a damn bit of difference in fuel economy either way. And even if it had, it would have taken years to break even.

hi impact can hook you up to andy.

What are the length differences between an e40d and aod? I hate my e40d

If you're bent on having OD, I'd look at the AOD first. You can build it up well enough, and it's the same length as a "long" C6. I figure the cost of a built AOD vs. a semi-built 700 plus adapters (front and rear) is going to be about the same.

Think long and hard about whether or not it's worth the money, tho. When I still had the 5spd, I did a little experiment -- drive a tank of gas without ever using 5th, then drive one using 5th whenever I could. It didn't make a damn bit of difference in fuel economy either way. And even if it had, it would have taken years to break even.
I've noticed the same deal.

When my trans went, I only had 4th gear, no OD. I got the same milage back as I did on the way there. (70 was about 2900 rpm)

you guys are thinking a manual has a deep enough overdrive...thats not really so unless you do longer hauls on the e way. the autos are .67-.70 and generally twice as deep as manuals.


in d i would get 13 on the hiway in od i would get 16-17.

the 700 has 1st gear tc lockup potential too.


either way , if you cant build them yourself your gonna get poked for $2500-3g's to get going.

i would use a pac adapter and a gm tcase...you could build a killer tranny and get it in if you can do it yourself for 1800.

or just build an aod if you know what to scrounge for that will bust a c6's ass for 1400.. or you can get a spankin new 4r70w at baumann right now for 1300, +700 for thier hop up shit and controller.


that would give you a hell of a tranny you can beat on for a 150 thousand miles or so.

my aod is bitchin, 170k miles and it doesn't miss a beat.
front pump seal leaks though :__(

Here's the link you're looking for: 700R4 to Small Block Ford (http://www.hospitalfood.net/700/700install.html)

Dusty

E4OD has a reasonable first gear and OD and can be built tough as hell.
no way will i ever touch an E4OD. expensive, finicky, a million feet long, and i would need a lot more computers to control it
What are the length differences between an e40d and aod? I hate my e40d
Chris Chus AOD is about the same length as my C6.

i dunno, AODs are nice, but the 700r4 is geared quite a bit lower, even lower than all the aftermarket low gear kits for an AOD, which are also 5-600 just for gears. any one know off hand which tranny sucks more power, the AOD or 700r4? my C6 seems to suck a lot of power (i've heard they are one of the least efficient trannies out there).

anyone got any links to any companies that build pretty decent trannies? i was just thinking about getting a TCI truck master or something (not like they are uber premium or anything)

I thought the hot set up was to put the e40d first gear planetaries in there. I think th first gears are comparable too between the e4 and 700 aren't they? 269 for the e40d. Well, I just checked the link above and its 3.06 for the 700.

Andy, do you need that low? Are you gonna get a doubler?

he was saying before, no doubler, just a 205 with a 3:1 gearset if they ever decide to produce em

my AOD has 200,000 miles on it before i had to rebuild it.
yes there is a close ratio kit for AODs that uses the gears from the E40D.
It would of been cool if i installed a set but i didnt. either way it still works fine.
Andy why not run a manual trans like a NV4500 or something like that?

I thought the hot set up was to put the e40d first gear planetaries in there.

Yeah, it's "hot", but fawk that. You get a little bit lower first gear, but then the 1-2 and 2-3 jumps are huge. Personally, I'd rather have the close ratios in the trans. With an OD, you can run deep rear gears and make up for the ratio jumps some, but without it, I'd keep the rear gear taller for the street and keep the trans ratios close.

Then use the tcase gears to make it work on the trail. ;)

Oh, and as far as the doubler goes... there's a bunch of parasitic loss there with all the extra gears you have to spin. One more reason to keep the close ratio gears.

Andy, do you need that low?
seniors truck has a 700r4, 4.10s and 31s and that thing is pretty ballsy off the line. especially around town it just feels like i'm wasting a lot of gas to get moving. i've also noticed it is a lot harder for me to get my tires spinning in snow, sand mud, etc..i know my engine has the power and i know the 1356 is geared low enough. just feels like the tranny ratios are poorly spaced, if you know what i'm talking about.
Are you gonna get a doubler?
not any time soon. the long term plan is an OD tranny (ZF or maybe a 700r4) and a 205 and 5.13s or 5.38s if they are out for the 14 bolt. that should be plenty low enough for me and still cruise pretty good on the freeway. doublers are cool, but i'm not sure if i could justify it with an auto.