Tranny pan gasket replacement - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72WiscSub · 09-01-2009, 09:44 PM

Well I am going to replace the tranny pan gasket this weekend, it is leaking a bit, and I looked under the Burb to get a look and it seems like the front pan bolts are under the crossmember. Can I reach these with a swivel socket? Any tips on getting these out?

I hope I don't have to take out the tranny to replace a pan gasket. Doesn't look like a lot of room, but just wondering.

Also, is it worth getting a new aluminum pan rather then using the original steel pan. I have read previous post and it seems that people that have replaced with a nice aluminum pan had less issues with leaks.

350 tranny.

Thanks

hayhauler71 · 09-01-2009, 09:55 PM

I use a 1/4 drive swivel socket and it fits right up in there. I replaced my pan at the same time with a aluminum pan with a cork gasket and have been leak free for 3 years.

72WiscSub · 09-01-2009, 10:24 PM

Sounds good hayhauler71. Thanks for the feedback.

Longhorn Man · 09-01-2009, 10:25 PM

1/4 in drive with a swivel.
if its still a pain, you can unbolt the tranny mount and lift the back of the tranny with a jack.

mrein3 · 09-02-2009, 07:19 AM

I hope you are doing the screen filter too. I've never dropped the pan without replacing that while I'm there.

cdowns · 09-02-2009, 07:30 AM

make sure when you have the pan off to check the flange where the bolt holes are . they tend to disform due to over tightening and causes many leaks

do not overtighten only 12-15ftlbs of torque on those bolts

i too lift the tail of the tranny up a bit for better access

72WiscSub · 09-02-2009, 07:48 AM

Thanks for the torques specs.

I will be replacing the screen filter also. Came with the new gasket.

big_al_71 · 09-02-2009, 07:57 AM

very simple job, definetly get your self an aluminum pan...here is a picture of mine...

72WiscSub · 09-02-2009, 08:14 AM

Thanks big_al_71. Kind of hard to see your pan with all that dirt and oil on engine and tranny. You really should clean that up a bit

It looks like you are running a deeper tranny pan then the stock one. Maybe it is just the photo.

c10crazy · 09-02-2009, 09:49 AM

Al, did you use a different trans cross member to make the deep pan fit?. I tried once with stock cross member and a deep pan wouldn't clear.

mclairmo · 09-02-2009, 01:44 PM

Alum pan seals better due to the thicker more rigid flange. Can get one cheap on Ebay. That's what I have and it workes fine. Also came with a rubber seal which seems to seal better than the cork ones I've used in the past. I sprayed some high tack on everything to make sure it seals.

PanelDeland · 09-02-2009, 06:56 PM

Deeper pans also tend to hold a bit more fluid and usually are finned to disapate heat better.

big_al_71 · 09-02-2009, 09:52 PM

Quote:

Originally Posted by 72WiscSub

Thanks big_al_71. Kind of hard to see your pan with all that dirt and oil on engine and tranny. You really should clean that up a bit

It looks like you are running a deeper tranny pan then the stock one. Maybe it is just the photo.

Yes you are right damn thing is super dirty!! Lol

It is a deeper pan and it hold two extra quarts...

big_al_71 · 09-02-2009, 09:54 PM

Quote:

Originally Posted by c10crazy

Al, did you use a different trans cross member to make the deep pan fit?. I tried once with stock cross member and a deep pan wouldn't clear.

I used the tubular tranny crossmember from CPP and there was zero issues with clearances...

09-01-2009, 09:44 PM	#1
72WiscSub Registered User Join Date: Apr 2009 Location: Appleton, WI Posts: 75	Tranny pan gasket replacement Well I am going to replace the tranny pan gasket this weekend, it is leaking a bit, and I looked under the Burb to get a look and it seems like the front pan bolts are under the crossmember. Can I reach these with a swivel socket? Any tips on getting these out? I hope I don't have to take out the tranny to replace a pan gasket. Doesn't look like a lot of room, but just wondering. Also, is it worth getting a new aluminum pan rather then using the original steel pan. I have read previous post and it seems that people that have replaced with a nice aluminum pan had less issues with leaks. 350 tranny. Thanks

09-01-2009, 09:55 PM	#2
hayhauler71 Registered User Join Date: Aug 2009 Location: St. Paul MN. Posts: 1,996	Re: Tranny pan gasket replacement I use a 1/4 drive swivel socket and it fits right up in there. I replaced my pan at the same time with a aluminum pan with a cork gasket and have been leak free for 3 years.

09-01-2009, 10:24 PM	#3
72WiscSub Registered User Join Date: Apr 2009 Location: Appleton, WI Posts: 75	Re: Tranny pan gasket replacement Sounds good hayhauler71. Thanks for the feedback.

09-01-2009, 10:25 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Tranny pan gasket replacement 1/4 in drive with a swivel. if its still a pain, you can unbolt the tranny mount and lift the back of the tranny with a jack.

09-02-2009, 07:19 AM	#5
mrein3 Registered User Join Date: Feb 2000 Location: Center City, MN, USA Posts: 3,253	Re: Tranny pan gasket replacement I hope you are doing the screen filter too. I've never dropped the pan without replacing that while I'm there. __________________ '70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN

09-02-2009, 07:30 AM	#6
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Tranny pan gasket replacement make sure when you have the pan off to check the flange where the bolt holes are . they tend to disform due to over tightening and causes many leaks do not overtighten only 12-15ftlbs of torque on those bolts i too lift the tail of the tranny up a bit for better access __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

09-02-2009, 07:48 AM	#7
72WiscSub Registered User Join Date: Apr 2009 Location: Appleton, WI Posts: 75	Re: Tranny pan gasket replacement Thanks for the torques specs. I will be replacing the screen filter also. Came with the new gasket.

09-02-2009, 07:57 AM	#8
big_al_71 Registered User Join Date: Jun 2008 Location: South Florida Posts: 11,375	Re: Tranny pan gasket replacement very simple job, definetly get your self an aluminum pan...here is a picture of mine... Attached Images __________________ Get your facts first, and then you can distort them as much as you please!!!!!. Sylvester's build thread >>>http://67-72chevytrucks.com/vboard/s...ht=big+rebuild

09-02-2009, 08:14 AM	#9
72WiscSub Registered User Join Date: Apr 2009 Location: Appleton, WI Posts: 75	Re: Tranny pan gasket replacement Thanks big_al_71. Kind of hard to see your pan with all that dirt and oil on engine and tranny. You really should clean that up a bit It looks like you are running a deeper tranny pan then the stock one. Maybe it is just the photo.

09-02-2009, 09:49 AM	#10
c10crazy Like a Rock! Join Date: May 2002 Location: USA Posts: 1,092	Re: Tranny pan gasket replacement Al, did you use a different trans cross member to make the deep pan fit?. I tried once with stock cross member and a deep pan wouldn't clear. __________________ 69 LWB Runs great - work in progress Mess with me and you mess with the whole trailer park! Last edited by c10crazy; 09-02-2009 at 09:49 AM.

09-02-2009, 01:44 PM	#11
mclairmo Registered User Join Date: Jan 2006 Location: Take Off Posts: 1,908	Re: Tranny pan gasket replacement Alum pan seals better due to the thicker more rigid flange. Can get one cheap on Ebay. That's what I have and it workes fine. Also came with a rubber seal which seems to seal better than the cork ones I've used in the past. I sprayed some high tack on everything to make sure it seals.

09-02-2009, 06:56 PM	#12
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,993	Re: Tranny pan gasket replacement Deeper pans also tend to hold a bit more fluid and usually are finned to disapate heat better. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"



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