727 trans pan leak

[UFO68]

I've got a leak from the front (toward engine) of my trans pan that I'm pretty sure is just gasket related. I haven't worked on a 727 before so I want to make sure I get it right.

After doing some reading, I think the bolts should be about 12 ft/lb, please correct me if I'm wrong.

Is there a torque pattern for the bolts to make sure it's even across the pan? If so, can y'all point me in the right direction to find that?

Is there a gasket that you fine folks would recommend me using?

Thanks!

 

[dadsbee]

Wipe everything off and wait. Most times it's not the pan, but the dipstick tube O ring or the throttle lever or shifter shaft seals that are leaking.

 

[Lefty71]

Moroso 93110 Moroso Transmission Pan Gaskets | Summit Racing

 

[AR67GTX]

I’ve had good luck with the blue rubber gasket (not sure if rubber or silicon). But as Dadsbee said could well be leaking from above the pan. I wouldn’t worry about torquing. More harm is done by tightening the bolts to where the pan rails are distorted than it helps to seal the pan. I just snug them up in a back and forth approach just using the head of the ratchet to snug them down evenly in multiple passes and then going back every couple of drives to re-snug them until they and the gasket stabilize.

 

[Charles Cook]

If you change gasket don’t use RTV, it is not needed and can contribute to a leak. IMO

 

[threewood]

Take pan off. Straighten the entire pan rail. Glue a cork gasket to pan. Install and do not over torque. Those holes in the case strip very easy. I have helicoils for just such an occasion.

I eventually switched to a nice aluminum B&M pan. Same gasket attachment method. No leaks.

 

[Durandal25]

Wipe it clean, then take a shop towel and stuff it up by the shift lever. trans cooling lines too. No drops the next day….then check towel .

 

[Cranky]

Wipe it clean, then take a shop towel and stuff it up by the shift lever. trans cooling lines too. No drops the next day….then check towel .

And do the same around the dipstick tube at the trans....

 

[62maxx]

Moroso 93110 Moroso Transmission Pan Gaskets | Summit Racing

YES! THIS gasket cured EVERYTHING for me! Worth the 30 bucks....

 

[451Mopar]

‎Mopar #02464324AC oil pan gasket. Reusable molded gasket.

https://www.amazon.com/Mopar-0246-4...ocphy=1014568&hvtargid=pla-571816565505&psc=1

I haven't used this with an original 727 pan, just the 518 (deeper pan) and aftermarket aluminum oil pans.

Check dipstick tube behind "O"-ring for cracks too.

If you need a RTV sealer for the transmission, the Mopar 05010664AD stuff works really good. Factory used it on some FWD transmissions that don't have oil pan gaskets.
https://www.amazon.com/Genuine-Chry...0ec78&pd_rd_wg=TuaFq&pd_rd_i=B008H2PL9S&psc=1

 

[dvw]

get it clean a nd dry with brake clean. Then puff some baby powder around the shift seal, dipstick tube , rear anchor pin, line fittings, and pan. Watch where it gets dark and damp. The stock gasket tightened with a nut driver will set you up good.
Doug

 

[BDF6]

@UFO68 is your pan chromed? They tend to weep if mating flange is not prepped before install.