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Author Topic:   TH 350 transmission
eaton89
Member
posted October 09, 2003 11:05 PM
I saw on here you can take second gear out of a power glide. Can you take 2nd or 3rd out of a th350. Also how do you tell wich gear ratio your power glide is.


waltonjr1
Member
posted October 09, 2003 11:30 PM
You can tell by sliding out the input shaft and measuring it.I dont remember the exact length of each one but someone on here will know.

------------------
DEANJR#22


nate 11
Member
posted October 10, 2003 06:26 AM
the 1.82 has 12 5/8 long shaft
the 1.76 has 12 7/8 long shaft


eaton89
Member
posted October 10, 2003 07:58 AM
Thanks for the responds. If the input shaft is longer on one do you have to use a different converter for each.


rico 08
Member
posted October 10, 2003 08:20 AM
I think your confusing removing gears from a 3 speed manual with an auto,you can't really remove gears from a auto they use planetary type gears.The converters are the same the input shaft just goes into the planetarys deeper i beleive.


eaton89
Member
posted October 10, 2003 10:46 PM
Thanks Rico 08. I'm on over load last couple of nights and things are starting to all run together. I only thaught I read it that way. It did sound good thou not having to turn that extra weight.


ctfarm
Member
posted October 10, 2003 11:14 PM
On a turbo 350 you can remove the intermediate clutches and the roller clutch.These are the ones directly behind the pump.The're only applied in drive range second gear.Manuel second runs off of the band and the forward clutches.



powerglides
Member
posted October 13, 2003 07:24 AM
Buy removing these clutches on a glide does this have any negative reaction. Is the gain worth the hassel. I'm using a th350 now but a glide is lighter and less turning mass. I have a glide but havent checked the ratio and was wondering about the second gear. Has anyone done this and how do they like it. My car weighs 3472 and went on a diet last week. Its a good one too lost 134lbs in one day. LoL!


TCI
Member
posted October 14, 2003 08:58 AM
If you remove the high gear clutches in a powerglide you will cut down on the drag created. Hi gear ratio is 1:1 so if you are limited on rear gear ratios you can benefit by running lo gear only. There's not any negative reaction to doing this. If you decide later that you want hi gear, then you can change it back.

------------------
Scott Miller
TCI Automotive, LLC
662-224-8972 ext 332
scott@tciauto.com
www.tciauto.com


eaton89
Member
posted October 15, 2003 10:45 PM
Well that sounds like the way to go. Anyone know a good place to get a glide converter. Thanks for all the info.


TCI
Member
posted October 16, 2003 09:49 AM
Do you want a working converter or a "hollow" converter?

------------------
Scott Miller
TCI Automotive, LLC
662-224-8972 ext 332
scott@tciauto.com
www.tciauto.com


eaton89
Member
posted October 16, 2003 08:17 PM
Well, I have no idea. I'm still a rookie and are track is 2 years old. never heard of a hollow converter. Can you explain what it is or how it works. What do you have to do different to run one if anything a all.


eaton89
Member
posted October 19, 2003 06:06 PM
TCI, can you give a little more info on the hollow converter, what is it and how is it used. Thanks. (or anyone else for that matter).


eaton89
Member
posted October 19, 2003 06:09 PM
Whoops, wrong face.


ruggs66
Member
posted October 19, 2003 09:34 PM
with the hollow converter do you need to use an extra pedal or lever to engage the tranny?



racer17j
Member
posted October 19, 2003 10:44 PM
they have a valve body for the 350 thats is a direct drive like in a glide that needs no external valving
eaton the hollow converter is basicly just the casing it is used just to turn the pump like a coupler is used on a powerglide. basicly it's a cheater converter if your not alowed to run direct drives it looks stock but thats just to fool the tech guys


eaton89
Member
posted October 19, 2003 11:41 PM
Thanks for the respond. So do you do anything to the trany. What happens when you put in gear.


TCI
Member
posted October 21, 2003 12:38 PM
eaton89 Sorry i'm just responding to your question but I've been out of town. Racer17j is correct about how it works. With the Th-350 valve body, it is just a bolt in setup. Email me directly if you don't see a response within 1 day to your question. I can check my email on the road.

------------------
Scott Miller
TCI Automotive, LLC
662-224-8972 ext 332
scott@tciauto.com
www.tciauto.com


te33
Member
posted October 21, 2003 03:01 PM
te33 - Check your PM.

Scott

te33
Member
posted October 21, 2003 06:55 PM
TCI, can you give me a lil cheatin advice on a powerglide with converter need. Will be running in low gear. Need to know exactly what to take out for the second gear remove. Thanks


eaton89
Member
posted October 21, 2003 07:46 PM
TCI, I'm not getting it. I think i would like to run the glide. I'm with racer54. I tore the glide apart.Do you take the clutches out right behind the pump. Where is the piston Powerglide was refering to,is it the one that puts pressure on the band from the side. Also what exactly do you have to do to the rest of the glide to run it this way(change the converter, valve body or do I need a pedal to disengage)No rules on this at my track(dip ####'s)dont inforce the ones they have. Where can I get a Hollow converter. Dont want others to see what I did.


TCI
Member
posted October 22, 2003 03:06 PM
Dirtrace54 /eaton89 - Take the clutches that are in the drum that the band wraps around out and also the alum. piston and hub. That's basically it. If your going to run a dummy converter then you need to go with a different valve body like our 744500 internal dump. If your going to run a working converter then just put a full manual 744200 valve body on the trans and use a real lo stall converter like a 741125.

Scott

eaton89
Member
posted October 22, 2003 07:28 PM
Ok, I figured it out (kinda slow sometimes )Does the clutch hub inside the clutch housing need to be removed or is it ok setting in the housing. Also is there a web site I can check out those parts (valve body and converter). Thanks again.


TCI
Member
posted October 23, 2003 08:27 AM
Forgot one thing on the lo only - You need to block the HI gear feed hole off in the case.
Leave the hub out but you have to put the "wedding band" (brass colored ring) in and the sun gear. Go to www.tciauto.com and look under the Circle Track section. Everything is there.

Scott

[This message has been edited by TCI (edited October 23, 2003).]

eaton89
Member
posted October 25, 2003 05:28 PM
TCI, couldnt find it at the tci web site. Where in the case is the high gear feed hole. Also do you know where i can get a slip yoke for the glide it has a 16 spline output shaft. Is the manuel valve body necessary.


TCI
Member
posted October 27, 2003 09:16 AM
I would have to fax you a diagram of where the HI feed hole is. You will be better off going with a full manual valve body. Good luck on the 16 spline yoke. I have no idea where to get one. We've got the 27 spline but thats it!

url for converter:
http://www.tciauto.com/circle_track/circle_track_converters.htm

valve body: http://www.tciauto.com/valve_bodies.htm

[This message has been edited by TCI (edited October 27, 2003).]

te33
Member
posted October 27, 2003 06:30 PM
Yes we do make a dummy converter for the TH-350. The 10" diameter is a 241050 and the 11" is a 241150. The number for the 2 piece drive for a TH-350 with a one piece rear main motor is a 162004. We also have all of these for the glide.

Scott

Speedway65
Member
posted October 29, 2003 07:27 AM
we have to run a stock th350tranny with all working gears.TCI can you give me any tips on what to do to make it better.Has to have working converter.

Anyhelp would be great

ssr1st
Member
posted October 29, 2003 07:37 AM
Ive herd of peopel takeing a 3 speed and makking a 2 speed work in the 3 speed i dont know the hole story but the track would not let a 2 speed run in the class and a guy made a 2 speed work in a 3seed casing i dont know much about trannys but a 2 speeds the way to go domanated my class last year so the made a 3 speed only rule any info on this would be helpfull thanks


TCI
Member
posted October 29, 2003 08:23 AM
quote:
Originally posted by Speedway65:
we have to run a stock th350tranny with all working gears.TCI can you give me any tips on what to do to make it better.Has to have working converter.

Anyhelp would be great



A fully manual valve body would be a start. Our part number 321001 is a standard shift pattern with engine breaking in all gears and you would also want to use a lo stall converter. This will have less slippage than a stock unit. The number on that is 240920. A good rebuild with good clutches would be a plus also and if you run in 2nd gear, install a heat treated 2nd gear sprag race part number 328900.

Scott


TCI
Member
posted October 29, 2003 08:35 AM
quote:
Originally posted by ssr1st:
Ive herd of peopel takeing a 3 speed and makking a 2 speed work in the 3 speed i dont know the hole story but the track would not let a 2 speed run in the class and a guy made a 2 speed work in a 3seed casing i dont know much about trannys but a 2 speeds the way to go domanated my class last year so the made a 3 speed only rule any info on this would be helpfull thanks

It's physically impossiable to put the insides from a glide into a TH-350. You can remove 2nd gear from the 350 but I don't think your gonna se much difference as far as performance.

Scott


ssr1st
Member
posted October 29, 2003 08:50 AM
Thanks for clearing that up i thought it sounded a bit fishy


Speedway65
Member
posted October 29, 2003 09:11 AM
we run 1st gear with a 2.56 rear gear.what do you suggest now.


TCI
Member
posted October 29, 2003 09:19 AM
quote:
Originally posted by Speedway65:
we run 1st gear with a 2.56 rear gear.what do you suggest now.


What rpm range are you wanting to achieve?



Speedway65
Member
posted October 29, 2003 09:28 AM
between 6000 and 6300 why?


TCI
Member
posted October 29, 2003 09:47 AM
quote:
Originally posted by Speedway65:
between 6000 and 6300 why?


Just for general info. Are you using a stock converter or aftermarket? What type of valve body?


Speedway65
Member
posted October 29, 2003 09:56 AM
right now stock converter and stock valvebody.I know im leaving something on the table by using stock stuff.


TCI
Member
posted October 29, 2003 10:15 AM
Stock converters can average 10-12% or even more and that is lost power to the ground. A tighter lower stall converter will couple up quicker and give you quicker throttle response sort of like direct drive. The full manual valve body will help with trans longivity and a more consistant shift.

Scott

Speedway65
Member
posted October 29, 2003 10:38 AM
thanks for the info Scott much appreciated.

Jeff Todd

eaton89
Member
posted October 29, 2003 07:43 PM
Ha Scott , how much is that full manual valve body for the glide and can it be purchased directly from TCI. Also thanks for the fax on the high oil feed hole.


TCI
Member
posted October 30, 2003 08:25 AM
No problem. Hope it came through clear enough. Check your PM for valve body info.

Scott

------------------
Scott Miller
TCI Automotive, LLC
662-224-8972 ext 332
scott@tciauto.com
www.tciauto.com


eaton89
Member
posted October 30, 2003 07:23 PM
Thanks again Scott. The fax was barely visible but it worked. My fax machine is a piece of s##t.
Aaron.


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