70 Cougar AOD conversion w/ FMX tranny question

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Superchicken89
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Re: 70 Cougar AOD conversion w/ FMX tranny question

#81

Post by Superchicken89 »

Superchicken89 wrote: 16 Apr 2017, 05:48
9F91H581221 wrote: 28 Feb 2017, 10:05 If it's 3 1/4" between clips.
Mark... The Super Coupe slip yoke measures about 3 5/8" between the universal clips. Is there a universal which can adapt the 3 1/4" driveshaft to the 3 5/8" slip yoke? Would you recommend a setup like this or should I just buy a 3 1/4" slip yoke?
Believe I found the answer to my universal joint question. It seems the Spicer 5-134X will adapt the Super Coupe slip yoke to the FMX driveshaft. The FMX driveshaft is a Spicer 1310 universal joint and the Super Coupe driveshaft is a Spicer 1330. The Spicer 5-134X adapts the two together.
Bryan

1969 XR7 Restomod
1969 Eliminator
1989 T-Bird Super Coupe slightly modified :mrgreen:
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polonus
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Re: 70 Cougar AOD conversion w/ FMX tranny question

#82

Post by polonus »

I have 72 Cougar. Does this also apply to my car?
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9F91H581221
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Re: 70 Cougar AOD conversion w/ FMX tranny question

#83

Post by 9F91H581221 »

Pretty much.
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polonus
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Re: 70 Cougar AOD conversion w/ FMX tranny question

#84

Post by polonus »

Any idea what would be a total cost of the transmission swap, parts and labor, if someone else does it for me? Transmission from a donor car, preferably rebuilt before installation.
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9F91H581221
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Re: 70 Cougar AOD conversion w/ FMX tranny question

#85

Post by 9F91H581221 »

At a current day transmission shop, probably $2500-$3000 depending on variables.
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93RGTE
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Re: 70 Cougar AOD conversion w/ FMX tranny question

#86

Post by 93RGTE »

Any way you go to get OD in your car - AOD, 5-speed, Gearvendors - figure $3K.
Gary
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polonus
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Re: 70 Cougar AOD conversion w/ FMX tranny question

#87

Post by polonus »

Thx
Cougrrr
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Re: 70 Cougar AOD conversion w/ FMX tranny question

#88

Post by Cougrrr »

OK so I realize this thread is a bit old, but the info still seems valid, other than the prices sadly....

I'm prepping to do this conversion and would like to summarize the info I have gleaned in a post here soon, plus some stuff from other sources.
I do have some last questions. If people wish to indulge me by answering any of the ones below, I'll include them.

I'm converting an FMX on a 69 to an AOD, possibly from an 88 Crown Victoria. I have a mild cam a bit more aggressive than stock. I don't race. I drive it three seasons in the Northeast, mostly for short trips, but often for an hour or more.

[*] At this point is it cheaper/easier/more reliable to do an AOD-E or 4R70W conversion instead, especially if I want to try to just put the thing in with some fresh fluid and filter? AODs are pretty aged now. Not sure how much of a pain the computer is, aside from its expense.
[*] Do I need a new shift kit? I don't think this requires opening the transmission. I've read it can modify shift parameters; tran lasts longer. Options include $60 B&M (less control over low gears) vs TransGo ($135)
[*] New torque converter -- just take off the donor car; get a rebuilt one, or custom (ex: Florida Controls)? Stall speed? I'd like to ease off the line, not burn tires.
[*] Do I need an adapter to attach TV cable to stock autolite 2100 carb if I get the Lokar cable? Something like this throttle cable bracket? https://www.summitracing.com/int/parts/lok-srk-4000
[*] Should I get a transmission out of a car I know it's working in (88 Crown Vic), but not rebuilt; rebuild one; or spring for a Monster kit (rebuilt AOD with various pieces). I'm guessing I'll take one that's known to work and see if it works ok before doing any rebuilding.
[*] Confirm flexplate does not need to be changed.
[*] Should I add a transmission oil cooler ($125) given I drive in summer in the 90s? I have a new fancy radiator from WCCC.
[*] Does lockup increase gas mileage noticeably to make up for less driveability from shifts
[*] Selector shaft: Make one or use one of like http://www.summitracing.com/int/parts/lok-ata-1000 or http://www.summitracing.com/int/parts/l ... /overview/
[*] I have the 3.0 non-locking (6 code) drive ratio rear end with. I believe 2.42, 1.61, and 1 for gear ratios. Any issues with using the AOD with this gearset? Will I be downshifting out of OD on every hill?

Thanks!
-ms
Last edited by Cougrrr on 11 Oct 2021, 17:29, edited 1 time in total.
1969 351W Convertible

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Project thread: https://bit.ly/2n8GvKI
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Re: 70 Cougar AOD conversion w/ FMX tranny question

#89

Post by xr7g428 »

What are you trying to accomplish? with a 2.75 rear end ratio you don't need over drive.
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Cougrrr
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Re: 70 Cougar AOD conversion w/ FMX tranny question

#90

Post by Cougrrr »

The car is revving high when it's on the highway. I don't have a tach so I can't quote it, but the gerbils are spinning their wheels hard in there. An online calculator suggests it's 2500 rpm at 70mph based on 26" tire height of 215/65R15 and 2.75 rear end. https://www.tremec.com/calculadora.php

I am guessing that's the gear ratio from an online source that may not be correct. It's a stock '69 351w 2v 'vert with A/C. I'm not sure I have the warranty plate on the car but I'll check since that has a designation.
1969 351W Convertible

Car tour: https://youtu.be/QOVDOv6GVhU
Project thread: https://bit.ly/2n8GvKI
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