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gmc 350


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tusseltussel
User

Mar 3, 2008, 8:46 AM

Post #1 of 6 (1908 views)
gmc 350 Sign In

ok back to working on the bus: reverse works kinda.. it seems to me that the reverse clutch pack must be leaking by and loosing pressure. when you put it in reverse it will go in to gear but then if you just sit their without touching the gas you will feel it come out of gear then a few seconds later back into gear. if you have your foot on the gas it seems to stay in but when you let off it usually pops out again than back in I don't think this should effect any of my forward gears and it sounds like a leak to me what do you all think. and if I were to replace it what tranny should i get


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Mar 3, 2008, 10:37 AM

Post #2 of 6 (1904 views)
Re: gmc 350 Sign In

I forgot already - what tranny and year is this? That problem could be a weak front pump which can be replaced. If a 700R will fit in and GM 350 they have been pretty good trannies,

T



tusseltussel
User

Mar 3, 2008, 1:22 PM

Post #3 of 6 (1901 views)
Re: gmc 350 Sign In

its a 1980 with a 350 and a 350 hydromatic trans...


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Mar 3, 2008, 2:52 PM

Post #4 of 6 (1898 views)
Re: gmc 350 Sign In

Accurate / Automatic Transmission
Warranty - 3 YR 40044 Price: $554.99 Core: $275.00 Total: $829.99 Application: Transmission model THM400 (13 bolt fluid pan) Note: 4 1/2" output; 6 bolt torque converter cover. *** Call 1-800-428-7726 extension (1) for application verification and availability before ordering ***


Hmmm? Seems like just the 400 was listed for this?? I think they can swap without any trouble. Are you thinking of fixing this one, or a whole used different one? Any history on the one you have?

T



tusseltussel
User

Mar 4, 2008, 9:15 AM

Post #5 of 6 (1895 views)
Re: gmc 350 Sign In

hey Tom, I gotta go look at the pan on this thing and see, maybe it is a 400, i was told it was a 350 and well maybe it's not but anyhoo, I was hoping to get another 1000 miles outta this one and in the mean time get a 400 from the junkyard and rebuild it, i kinda remember watching my brother do a few of em when i was younger, History, all i know is what i was told, I bought this bus from the county surplus auction and they say they bought it new in 1980 and it was well maintained(I don't believe it) they say it's been sitting for 3 years...I think they used it as a shop truck. anyway their was another post here and i accidentally hit the wrong button and erased all that i wrote so this is the reincarnation of that post, (the first one was better)


(This post was edited by tusseltussel on Mar 4, 2008, 9:32 AM)


tusseltussel
User

Mar 4, 2008, 9:30 AM

Post #6 of 6 (1892 views)
Re: gmc 350 Sign In

just peeked under the bus and it is a 400

In Reply To
hey Tom, I gotta go look at the pan on this thing and see, maybe it is a 400, i was told it was a 350 and well maybe it's not but anyhoo, I was hoping to get another 1000 miles outta this one and in the mean time get a 400 from the junkyard and rebuild it, i kinda remember watching my brother do a few of em when i was younger, History, all i know is what i was told, I bought this bus from the county surplus auction and they say they bought it new in 1980 and it was well maintained(I don't believe it) they say it's been sitting for 3 years...I think they used it as a shop truck. anyway their was another post here and i accidentally hit the wrong button and erased all that i wrote so this is the reincarnation of that post, (the first one was better)



(This post was edited by tusseltussel on Mar 6, 2008, 1:39 PM)






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