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papadeath View Drop Down
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    Posted: 10-May-2013 at 9:48AM
Ok, kids, I think I have a little money saved up and I need the best choice for the buck for a new, used, rebuildable tranny for a 3:50 rear-end. This C6 ain't cutting it, can't drive more than 60 or so on the freeway currently. Ideally, I'd love a Tremec, but the bellhousing alone on Summit is over 600. The Tranny itself (TKO 600 5 speed), is a somewhat comfortable 2,295, but with all the other stuff, plus fabbing it all up, clutch, flywheel, yadda yadda, is a little much. I could make do with an AOD I reckon, but it has to bolt up to a 460.. A '75. Please help.

Mark
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read this. 

A lot of it is 'truck specific' but most of it pertains to you. If I did my Cougar, I'd use this bell/flywheel/clutch as well, most likely. 

I'm into my truck with TKO/OEM bell/L&L clutch/flywheel /misc parts for around $4K

You'd be a litlte cheaper since you wouldn't need the TKO midshifter, you'd still need the short input shaft, however.


3.25:1 rear end, 27.5" tires, 2K RPM @ 70 MPH in 5th. 
Paul
77 XR7 460/C6/3.00:1 *SOLD*
78 XR7 523/C6/3.5:1
79 F100 460/TKO500/3.25:1
'I also have some left over potatoes-I understand you can generate electricity from them'- Foote500
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AOD
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Been reading up myself, Different versions of the AOD Some are  better than others. Another option was a bolt on Overdrive unit for the current trans.
http://www.gearvendors.com/hrford3s.html

"The Ford C4 and C6 transmissions are two of the best performing, most durable transmission ever built. By adding a Gear Vendors Under/Overdrive to these transmissions you have an unbeatable package far superior to any factory overdrive automatic and with 6 close ratio gears for performance. With a 28.6% faster cruising gear your 4.10 rear gears will give you the same net rpm as a set of 3.20s (3.55s will cruise like 2.77s -"

Edited by Robbdtme - 10-May-2013 at 12:08PM
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My reasoning for going stick was as follows. YMMV

1. Gear Vendors is Approx $3K by the time all is said and done. I had a stock C6 that I'd want to go through, if putting it against a GV. more $.

2. E4OD. Stock, they are still weak, from what I've seen. Good converter, $400 +. Even if you go with the guy on the Lightning forum building valve bodies, thats $300. I had no access to a known good / used / cheap E4OD. Saw some low mileage 2wd units that were around $900. The later E4OD uses an elec. speedo. Cable X box to interface with mechanical speedo.. $300. Controller for trans, $500. 

3. Contemplated a T5, but everyone talked me out of it. 

I went with the TKO 500 for the higher first gear. I figure my truck is, uh, traction limited.. Even assuming I had 500 ft lbs at the crank, it'd just go up in smoke if I really dropped the hammer. 

My truck, as assembled, shifts and drives very similar to a Fox body Mustang with a T5, the gear ratios are fairly close. 

I also don't regret it. lol
Paul
77 XR7 460/C6/3.00:1 *SOLD*
78 XR7 523/C6/3.5:1
79 F100 460/TKO500/3.25:1
'I also have some left over potatoes-I understand you can generate electricity from them'- Foote500
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Robbdtme View Drop Down
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The AOD and the EAOD are not the same. Most transmission shops even rebuild these twice before one works.  Overdrive is just a lockup torque convertor on a 3 speed gaining the convert slippage.
Personally I'll skip C4=C6 and run a Cast Iron FMX.Yet to Blast one of those apart. The 1 ton or Motorhome AOD trans is a 2 inch based off the FMX the one you want.
Johnny cash Special 74-75-76 freak. 77 XR7. 78 LTD II sport looks pretty but poop 302 in it.
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Robbdtme View Drop Down
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BTW the C6 in the car on my avatar I blasted the C6 out twice now. Hate C4's and C6 now rebuilt again with heavy internals and only a 72 351 4v cranking it. 


Edited by Robbdtme - 10-May-2013 at 5:42PM
Johnny cash Special 74-75-76 freak. 77 XR7. 78 LTD II sport looks pretty but poop 302 in it.
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occupant View Drop Down
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Originally posted by Robbdtme Robbdtme wrote:

The AOD and the EAOD are not the same. Most transmission shops even rebuild these twice before one works.  Overdrive is just a lockup torque convertor on a 3 speed gaining the convert slippage.
Personally I'll skip C4=C6 and run a Cast Iron FMX.Yet to Blast one of those apart. The 1 ton or Motorhome AOD trans is a 2 inch based off the FMX the one you want.


AOD is a four speed transmission. Lockup in the converter engages in both third and fourth. There is most certainly a fourth gear in there, and it is an overdrive.

I'm still using my FMX but every time I go over 40-45mph I keep wishing there was another gear
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Originally posted by papadeath papadeath wrote:

Ok, kids, I think I have a little money saved up and I need the best choice for the buck for a new, used, rebuildable tranny for a 3:50 rear-end. This C6 ain't cutting it, can't drive more than 60 or so on the freeway currently. Ideally, I'd love a Tremec, but the bellhousing alone on Summit is over 600. The Tranny itself (TKO 600 5 speed), is a somewhat comfortable 2,295, but with all the other stuff, plus fabbing it all up, clutch, flywheel, yadda yadda, is a little much. I could make do with an AOD I reckon, but it has to bolt up to a 460.. A '75. Please help.

Mark


So anyway back to this. What rpms are you running at 60 mph with 3:50 gears? I picked up a set but now am wondering about those, 3:25's were suggested but wanted more. Running a FMX so 2nd and 3rd are the same ratio's as C6.
Johnny cash Special 74-75-76 freak. 77 XR7. 78 LTD II sport looks pretty but poop 302 in it.
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Originally posted by Robbdtme Robbdtme wrote:

Been reading up myself, Different versions of the AOD Some are  better than others. Another option was a bolt on Overdrive unit for the current trans.
http://www.gearvendors.com/hrford3s.html

"The Ford C4 and C6 transmissions are two of the best performing, most durable transmission ever built. By adding a Gear Vendors Under/Overdrive to these transmissions you have an unbeatable package far superior to any factory overdrive automatic and with 6 close ratio gears for performance. With a 28.6% faster cruising gear your 4.10 rear gears will give you the same net rpm as a set of 3.20s (3.55s will cruise like 2.77s -"
What do you mean by 6 close ratio gears? I thought the gear vendor's unit only added one more gear? At any rate, for 2700 bucks, that seems my best bet, just a little expensive; remember, I got this kid fixin' to pop out. I'm wondering with a quick paint job if I can get 7K for this thing.... It's all brand new save for the interior and paint... What do you guys think? Oh, by the way, at 60mph (can't really tell for sure because my speedo is off because of the rear end), I'm at about 2K RPM, if I push it faster it will overheat, plus excessive wear and tear. This drive train only has about 700 miles on it.
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If you're just gonna sell it, don't bother with the Gear Vendors, they don't earn any extra $. I see lots of people REMOVING them to sell them separately from a vehicle. I've heard gear splitting with a Gear Vendors is much easier said than done. 

If you have a cell phone with GPS, (android/Iphone) there's a free speedometer app. That'll get you exact speed. 
Paul
77 XR7 460/C6/3.00:1 *SOLD*
78 XR7 523/C6/3.5:1
79 F100 460/TKO500/3.25:1
'I also have some left over potatoes-I understand you can generate electricity from them'- Foote500
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Originally posted by papadeath papadeath wrote:

What do you mean by 6 close ratio gears?
 
in operation, think of the Gearvendors unit as a split axle in a big truck. it has a high & a low range that will effectively give you 6 gears from a 3 spd trans
 
1L / 1H
 
2L / 2H
 
3L / 3H
 
is it possible to use each range as an auto trans shifts itself through the ranges, I don't know?
 
yes the AOD is the same strength level as the FMX(uses the same clutches)
but i'm also ~pretty sure~ the AOD is a 3 speed+OD+lock-up unit 
 
 


Edited by Rockatansky - 12-May-2013 at 3:52AM
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An AOD built by a REPUTABLE tranny shop will do EVERYTHING you need it to do and hold up well.
Build an AOD that is bullet proof, they add extra discs, they can get rid of the "lock up" put a direct drive input shaft, different rpm stall converters, hardened input shafts and more stuff I cannot even begin to explain.
 
We use these AOD trannies in our Thunderbird SuperCoupes. Some running upwards of 400hp cracking 10's in a quarter mile carrying the front wheels off the line pushing a car comparable in weight to our Torinos.
The AOD in our SC is backed by a 3.27 posi rear.
225/50/16 tires(same as a 295/50/15) runs 2100 or so at 75-80 mph on the highway.
Put that on a 3.50(raising RPM) rear with 235/60/15(lower RPM) and you will be right about the same 2k rpm at highway(75-80mph)speed. The lower gear and taller tire will almost completely offset each other and make it damn close!
 
The AOD was availble on the big block 460 Ford Trucks and will bolt right up.
 
Alan on the SC website has his own business and is the premier expert on the AOD tranny.
We divert ALL tranny questions to him... tell him what you have and what you are looking to do and he will get you a damn near bulletproof tranny!
I have bought some things from him and dealt with him in the past myself.
I sent him a message on the SC forum asking him to join us here adn help us with getting our cars some cruis-a-bility and expertise knowledge/guidance.
 


Edited by Regul8r - 12-May-2013 at 11:12AM
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BBF AOD IS NOT an "AOD"

It's the E4OD.. And they are COMPLETELY unrelated to the small block AOD. The E4OD shares many parts with the C6. 
Paul
77 XR7 460/C6/3.00:1 *SOLD*
78 XR7 523/C6/3.5:1
79 F100 460/TKO500/3.25:1
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Originally posted by Psquare75 Psquare75 wrote:

BBF AOD IS NOT an "AOD"

It's the E4OD.. And they are COMPLETELY unrelated to the small block AOD. The E4OD shares many parts with the C6. 
 
Yup, sorry I did not clarify.
When I say AOD i meant the entire family.
The T-Bird and I THINK all others went to E4OD for the "E" ability too.
 
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yup, E4OD uses the same clutches as the C6
 
the E4OD planet set, drum & sun gear are used in the C6 to make it Wide Ratio
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The 'AOD' is a small block transmission. To get it built properly and adapted to a BBF is upwards of $2K.

I guess it depends how much you want to spend, what your ultimate goal is, and how much work you want to do. 
Paul
77 XR7 460/C6/3.00:1 *SOLD*
78 XR7 523/C6/3.5:1
79 F100 460/TKO500/3.25:1
'I also have some left over potatoes-I understand you can generate electricity from them'- Foote500
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