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Aluminum Transmission Pan Install

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Along with tackling some brake issues on the old GMC this week, I also decided to take care of a nagging transmission pan leak I have lived with for years.


I decided to go with a Summit brand aluminum deep pan, and went the extra mile with a lubelocker reusable gasket. The pan is really a nice piece, and to my surprise "made in the USA" .. After torqueing the bolts to 120 inch lbs the old turbo 400 is now dry as a bone underneath.


Gasket technology has taken a great leap forward in recent years. They are considerably more pricey, but the payoff in having no leaks and being reusable seems worth the investment.

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6 hours ago, Royal Squire said:

Got any photos?

I`ll try to get some on the Ipad... I`m one of the last few in existence that refuses to pay for a smart phone lol!

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16 hours ago, Royal Squire said:

Got any photos?

@Royal Squire Kind of hard to get a good view.. but the flange is about 3/8 thick and has a nice smooth machined   

surface that hopefully ends the annoying drip!





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They leak out of the shift rod small seal too and looks like a pan gasket leak


My '81 K20



Edited by GSP7
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