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#1 |
Registered User
Join Date: Mar 2003
Location: Havertown, PA
Posts: 15
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Changing TH350 transmission gasket
How do I replace the tranny gasket on a TH350 on my 1973 C20. It seems that there is a crossmemeber in the way. I can't get to all the bolts on the pan. What do I need to do?
Thanks, Luke |
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#2 |
LED King
Join Date: Jan 2003
Location: Sacramento, CA
Posts: 2,088
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Re: Changing TH350 transmission gasket
You'll need to jack up the tranny and unbolt the crossmember and tranny mount. Easiest way to jack it up without getting in the way is to jack up the tailhousing.
__________________
Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32 |
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#3 |
Registered User
Join Date: Mar 2003
Location: Havertown, PA
Posts: 15
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Re: Changing TH350 transmission gasket
Thanks for your help.
Luke |
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#4 |
Registered User
Join Date: Oct 2002
Location: Edmond, OK
Posts: 5,906
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Re: Changing TH350 transmission gasket
i changed mine and dont remember ever having to jack up the trans.. of course mine is an 82 c10... dont think that should make a difference though.
__________________
Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call |
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#5 |
Insert Witty Text Here
Join Date: Oct 2002
Location: San Antonio, TX
Posts: 3,415
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Re: Changing TH350 transmission gasket
I used a 1/4 drive socket and a swivel on mine. I did not have to do jack up the trans.
Slonaker |
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#6 |
Registered User
Join Date: May 2003
Location: Shreveport LA
Posts: 3,170
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Re: Changing TH350 transmission gasket
I think production tolerances must have been a bit squirrelly back then, because my '79 Sub requires jacking up the trans to get to a couple of the rear pan bolts. Luck of the draw, I guess.
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#7 |
LED King
Join Date: Jan 2003
Location: Sacramento, CA
Posts: 2,088
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Re: Changing TH350 transmission gasket
With my 700, it is impossibe to take the rear bolts out without taking the cross-member out. Of course I have a deep pan and allen head bolts.
__________________
Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32 |
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#8 |
You get what you pay for
![]() Join Date: Dec 1999
Location: Cherryville, NC
Posts: 4,798
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Re: Changing TH350 transmission gasket
Tyler,
when I had my stock 700R4 crossmember in my truck, I had to jack up the tranny to remove the pan. Either that or take the stock y-pipe loose so I could gain enough room to get it off. I quickly tired of that junk and notched the crossmember lip a tad so it would drop down without having to remove anything. I could reach the rear bolts without removing anything but couldn't get the pan off. Sometimes I wonder what the engineers are thinking when they design this stuff.
__________________
Mike 1985 Chevy C-10 |
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#9 |
STILL PLAYS WITH TRUX
Join Date: Nov 2002
Location: Melbourne, Fla.
Posts: 2,764
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On my '87 with a 700r4 i also notched the crossmember lip the length of the pan and i also wacked off the two little tabs on the tranny oil pan and i have no problem at all i can remove & install the bolts and remove & install the pan with the cross member in place.
Im not shure if the TH350 truck cross members can be notched the way i did mine but if it can i know i wouldn't think twice about doing it. The cross members on these trucks are way over engineered and a lot of material can be removed without weaking them. |
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#10 |
Registered User
Join Date: Mar 2003
Location: Havertown, PA
Posts: 15
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Re: Changing TH350 transmission gasket
Hey guys,
Thanks for all of the replys. I think I am going to notch the lip of the crossmember. This will make it easier to get to. Lots of steel left on the crossmember after I notch it out. Thanks, Luke |
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