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Re: [GMCnet] My tranny woes [message #265540 is a reply to message #265531]

Thu, 06 November 2014 08:23

powerjon

Messages: 2446
Registered: January 2004

Karma:

Senior Member

All,
Here is the trouble shooting manual for the transmission.

http://www.bdub.net/manuals/THM_425_Trouble_Shooting.pdf

JR Wright
78 Buskirk Stretch
75 Avion
Michigan

> On Nov 6, 2014, at 3:46 AM, Trevor Pordage wrote:
>
> i have just done a quick search on oil pressures for turbo 400 transmissions around 200 psi is what is being stated on the case pressure port and oil
> cooler lines down around 10-50 psi
> so therefore any gauge or switch needs to be mounted in the pressure port I assume the 425 will have similar values
>
>
> Originally Posted by Blown7 View Post
> Like the title says, if I install a pressure gage in the oil cooler line, what should I see for a good pressure in a GM Turbo Hydro 400
> transmission??
>
> When? Idling, in gear? in park?? here's the factory spec:
>
> neutral, brakes applied, 1k rpm: 55-70 psi
> D, idle (idle "set to spec"): 60-85
> D, brakes applied, 1k rpm: 60-90
> Intermediate or lo, brakes
> applied, engine at 1k rpm: 135-160
> R, brakes applied, 1k rpm: 95-150
> D, brakes applied, 1k rpm,
> downshift switch activated: 90-110
>
> this is for the oil pressure gauge mounted on the test port on the driver's side of the case. Hope it helps. *shrug*
>
> http://www.pirate4x4.com/forum/general-4x4-discussion/848892-pressure-th400-oil-cooler-line.html
>
> or this one
>
> http://www.dragstuff.com/forum/viewtopic.php?f=16&t=4869
>
>
>
>
>
> --
> Trevor
> Brisbane Australia
> Siesta Koala 76 Edgemont (old Bobby Moores)
> 71 Cadillac Eldo Convert
> 58 Cadillac Eldorado Brougham Project
>
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan

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[Message index]

		My tranny woes By: kerry pinkerton on Mon, 03 November 2014 19:31
		Re: My tranny woes By: larry.whisler on Mon, 03 November 2014 19:46
		Re: My tranny woes By: Bob de Kruyff on Mon, 03 November 2014 20:28
		Re: My tranny woes By: rickmike on Tue, 04 November 2014 19:50
		Re: My tranny woes By: kerry pinkerton on Mon, 03 November 2014 20:39
		Re: My tranny woes By: Bob de Kruyff on Mon, 10 November 2014 21:02
		Re: [GMCnet] My tranny woes By: Ken Henderson on Mon, 03 November 2014 21:19
		Re: [GMCnet] My tranny woes By: Ray Erspamer on Mon, 03 November 2014 21:31
		Re: [GMCnet] My tranny woes By: Ken Henderson on Mon, 03 November 2014 21:42
		Re: [GMCnet] My tranny woes By: USAussie on Tue, 04 November 2014 01:04
		Re: My tranny woes By: Larry on Tue, 04 November 2014 08:00
		Re: My tranny woes By: midlf on Tue, 04 November 2014 09:30
		Re: [GMCnet] My tranny woes By: James Hupy on Tue, 04 November 2014 09:36
		Re: [GMCnet] My tranny woes By: WD0AFQ on Tue, 04 November 2014 12:38
		Re: [GMCnet] My tranny woes By: USAussie on Tue, 04 November 2014 13:10
		Re: My tranny woes By: kerry pinkerton on Tue, 04 November 2014 20:36
		Re: My tranny woes By: rickmike on Tue, 04 November 2014 22:42
		Re: My tranny woes By: George Beckman on Wed, 05 November 2014 15:00
		Re: [GMCnet] My tranny woes By: James Hupy on Wed, 05 November 2014 16:45
		Re: [GMCnet] My tranny woes By: kerry pinkerton on Wed, 05 November 2014 20:50
		Re: [GMCnet] My tranny woes By: James Hupy on Wed, 05 November 2014 23:04
		Re: [GMCnet] My tranny woes By: USAussie on Thu, 06 November 2014 00:21
		Re: [GMCnet] My tranny woes By: cadelec on Thu, 06 November 2014 02:46
		Re: [GMCnet] My tranny woes By: powerjon on Thu, 06 November 2014 08:23
		Re: [GMCnet] My tranny woes By: USAussie on Thu, 06 November 2014 15:10
		Re: My tranny woes By: kerry pinkerton on Thu, 06 November 2014 17:19
		Re: [GMCnet] My tranny woes By: Ken Henderson on Thu, 06 November 2014 17:59
		Re: My tranny woes By: kerry pinkerton on Tue, 18 November 2014 16:01
		Re: [GMCnet] My tranny woes By: USAussie on Tue, 18 November 2014 16:54
		Re: [GMCnet] My tranny woes By: kerry pinkerton on Tue, 18 November 2014 18:27
		Re: [GMCnet] My tranny woes By: USAussie on Tue, 18 November 2014 18:50
		Re: My tranny woes By: lotsofspareparts on Tue, 18 November 2014 19:37
		Re: My tranny woes By: rickmike on Tue, 18 November 2014 21:51
		Re: My tranny woes By: rcjordan on Fri, 19 December 2014 20:01
		Re: [GMCnet] My tranny woes By: sgltrac on Fri, 19 December 2014 20:37
		Re: My tranny woes By: rcjordan on Fri, 19 December 2014 20:48
		Re: [GMCnet] My tranny woes By: powerjon on Fri, 19 December 2014 22:55
		Re: My tranny woes By: rcjordan on Fri, 19 December 2014 23:20
		Re: My tranny woes By: rcjordan on Tue, 30 December 2014 11:24

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