Shift Kit/Transpak For 727???

[jeepjake]

Anyone actually found a tranny kit for the 727 that came in '84-89? Jeeps?

A shift improver kit like the B&M & TCI?

Have gone around in circles, people say "sure, we can get one" and they find out they can't!

They only seem to list to '79 for non-lockup.

[ September 11, 2002, 07:29 PM: Message edited by: jeepjake ]

[Sycho15]

I got a full-manual/reverse valvebody from Cheeta for my 727. The only thing about it I don't like is complete lack of engine braking in first gear....

There were a few other kits I could have ordered as well. Your local speed-shop would be the place to go to, not the regular auto-parts stores.

[jeepjake]

Originally posted by Sycho15:
..................
There were a few other kits I could have ordered as well. Your local speed-shop would be the place to go to, not the regular auto-parts stores.Have tried both, but there are NO kits listed for an '80's vintage NON-Lockup TF727. So...., I'm thinking maybe the '77-'79 kit that IS listed (not for Jeep, just '79 mopar 727) might work??? Since the tranny is a 727 in everyway except the bolt pattern and output, I'm thinking this should work??

[gsmikie]

your trans is a lock up if you put a non lock up kit in it you will burn up the converter you might want to look into the no yo-yo kit

[WillyPete]

Originally posted by gsmikie:
your trans is a lock up if you put a non lock up kit in it you will burn up the converter you might want to look into the no yo-yo kitare you sure? i thought all 727s were non lockup. is there a way to tell?

thanks

[gsmikie]

1984/89 are lock up

[Bob Barry]

Some of them are lockups; the two '88's I've had my hands on haven't been. Rumor is that tow-package trucks (or trucks with the 3.31 axles) got the non-lockup trannies, but there's no official confirmation on that.

[jeepjake]

Originally posted by gsmikie:
1984/89 are lock upNo it is DEFINITELY NOT a lockup (most Jeeps were not - at least the 5 '85-90 jeep's I've torn apart weren't). Would be curious to know why everyone seems to think they came with lockups?

Anyway, I guess there's still no firm answer from anyone who's actually done a kit in one of these, so I ordered the kit for the '79 TF727 non-lockup and will see if it jives with the valve body, if so, I'll post and let others know if it works as well as the one I put in the TH400 in the '74 I had and exact P/N's to order.

[ibnfe]

I put a shift kit in my '85 no problems. IIRC, it involved enlarging one of the ports and removing one of the balls in the valve body, along with new seals and such for the pistons, stiffer springs for the valves. I can't remember if it came with a different seal plate or not. And by the way, the tech manual from ATSG states that there is no such thing as a 727 with lock-up. The 999 and 904, which are identical internally except the planetary gears and valve body, are both lock-up.

[ibnfe]

Oh yeah, Jim Buntrock from Aceomatic Recon (tranny wholesale store/rebuild facility) said the 727 wasn't made past '79, which is why that's the latest date shown available. There were apparently plenty of casings and parts available in the warehouse to continue assembling them after then. The kits for the '79 should work no problem. Go to ACEOMATIC RECON (http://www.acerecon.com) if you would like more info.

[ September 13, 2002, 10:07 PM: Message edited by: ibnfe ]

[WillyPete]

so how do you tell if it's a lockup tranny? smile.gif

[gsmikie]

http://www.tciauto.com/amc_chry/amc-chry_torqueflite.htm well then........

[gsmikie]

Chrysler Torqueflite and AMC Torque Command
Beginning in 1978 for Chrysler and 1979 for American Motors, a lock-up torque converter was used with most transmissions. NOTE: You cannot interchange a lock-up converter with a conventional non lock-up converter. The transmission input shaft and valve body used for lock-up application are different. TCI offers converters for these two styles of operation.

When changing to an aftermarket converter, you may need to replace the OEM flexplate. TCI 145200 and 145300 flexplates are both heavy-duty units required when using a 10", 9", 8" or 7" torque converter. In conjunction with the converter and flexplate, you will also need to use TCI 146200 7/16" x 20 converter bolts.

[ironroad29]

yup i just pulled the tranny out of my 83 and it was a rebuilt unit ,not sure if it was a pull and replace or a pull,rebuild and replace ,but the input shaft has the splines that go all the wat up ,where as the replacement i have for it has a stub shaft inthe front of the shaft

[talntar]

from the mr 253,and i checked the is notes too.
two automatic trasmission models are used on grand wagoneer and j-trucks.they aretransmission models 999 and 727.the model 999 transmission is used in grand wags and j-10 trucks with a 2.73 axle ratio and a six cylinder engine.the model 727 trans is used in grand wags and j10 truck models with an 8 cylinder engine or with a 6 cylinder engine and a 3.31 axle ratio

both trans models are fully automatic,three speed hydraulically operated units with compound planetary gear system.a three element torque converter is used for all applications.

i find nothing refering to a lock up in this manual

[ironroad29]

well these two have 2 very distinct shafts so the is a differance somewhere

[Ralph]

I've rebuilt several TF727's now from 1982-later FSJ's. All of them were non-lockup units.

If the tranny is out of the vehicle, it's easy to tell whether it's non-lockup or lockup. The input shaft (front) of a lockup tranny will have an oil ring and a smooth nipple.

On the road (in Drive), a lockup tranny will feel like it is downshifting during gentle braking. A non-lockup TF727 will have enough slippage in the torque converter that, when the brakes are applied, it's pretty clear that the deceleration load is being carried by the brakes and not by the engine.

I was with Raider and family in Moab last month. He's installed a B&M Rv shift kit in his 1982 Cherokee WT, and he really likes the firmer shifts than stock. I'm not unhappy with the way my stock valve body works, so I haven't changed anything.

[Millerluck]

I just went through this myself.

I have a non-lock up.

The splines go all the way off the end.

I had to send the Trans-Pack back to Summit when I found in the instuctions for the #10227 kit(1979-1996 727's) says it was for a lock-up.

B&M tech could not recomend a Trans-Pack for my year with the "non-lock".

The other way the tech from B&M said to tell other then the splines were that a locking valve body will have an "S" shaped bypass tube on the bottom near the filter.

I have a 727 for sure because the 727 deep pan I got from Mopar fit great. 727's have a bulge around for the dipstick hole.

Later

Larry Miller

[SpruceMoose]

dont the lock-up types feel like a 4-speed, with a little rpm drop once it settles in at cruising speed? my chrysler minivan does that, but the waggy does not.

sm.

[Chevelleguy]

I would think that the older, mechanical style lock-ups don't hit as hard as the later, electronic style that you are used to.

[Ralph]

The other way the tech from B&M said to tell other then the splines were that a locking valve body will have an "S" shaped bypass tube on the bottom near the filter.Forgot about that. It's called an auxiliary valve body.

[sunliner]

I'd say my '89 is non-lockup. I had an '82 Buick Skyhawk w/lockup converter, (I know, much smaller, but...) and it was hugely noticeable when the lockup happened...felt like another gear. There's no lockup happening in my GW. In fact, it shifts into 3rd gear at about 27mph, and there's no shifting at all after that.

[billyrb]

Transgo Stage 1 & 2 kits for the 727. Have one in mine, works great.

[ironroad29]

yup thats what i'm gonna install in this one once i find out if it works or not i hate b&m junk ,there quality has gone to the crapper transgo makes some of the best shift kits far as i am concerned.

[ May 19, 2004, 01:27 PM: Message edited by: ironroad29 ]