Transmission pan
#1
Transmission pan
Is this the right aftermarket transmission pan for my 350? on amazon it says doesn't fit a 72 cutlass, or any recommendations for an aftermarket pan. I do have a leak so I want to get a new pan since I need a gasket, and a pan with a plug would make life easier for future oil changes..thanks
#2
Every single TH350 ever made has the same 13 bolt trans pan bolt pattern. If it fits any TH350, it fits yours. On-line application catalogs are notoriously inaccurate, particularly with respect to Oldsmobiles. Do you really want one that deep with the fittings? I don't thing I paid that much for the whole transmission.
#3
Well I wanted to use there gasket so I thought get there pan. Being Canadian its about 100 more than the US price lol, is there another pan you recommend Joe with a drain plug that will work with the Moroso gasket, I gladly get something else if you think its good..
#4
For the most part, I just use stock steel pans. If you want aluminum for the thicker flange, there are a number of options in the $60-$120 range (yeah, those are US numbers, so figure 30% higher or so). Summit has about 30 different TH350 pans from stock to extra deep. Your Moroso is $212 US.
#5
Thanks for the tip Joe, just looking at this now, after price into Canadian and shipping I will save over 100
https://www.summitracing.com/int/par...1000/overview/
paired with this
https://www.summitracing.com/int/par...g350/overview/
https://www.summitracing.com/int/par...1000/overview/
paired with this
https://www.summitracing.com/int/par...g350/overview/
Last edited by skyhigh; January 17th, 2019 at 02:54 PM.
#7
#8
#9
Do you really need a deep pan? The pan below worked fine for me. That gasket looks like the stock Mopar gaskets which well Summit and Moroso brands offer similar.
https://www.summitracing.com/int/parts/spe-5450/
https://www.summitracing.com/int/parts/spe-5450/
Last edited by olds 307 and 403; January 20th, 2019 at 07:32 AM.
#10
Do you really need a deep pan? The pan below worked fine for me. That gasket looks like the stock Mopar gaskets which well Summit and Moroso brands offer similar.
https://www.summitracing.com/int/parts/spe-5450/
https://www.summitracing.com/int/parts/spe-5450/
#11
Do you really need a deep pan? The pan below worked fine for me. That gasket looks like the stock Mopar gaskets which well Summit and Moroso brands offer similar.
https://www.summitracing.com/int/parts/spe-5450/
https://www.summitracing.com/int/parts/spe-5450/
Pan:
https://www.summitracing.com/parts/sum-4338856
Gasket:
https://www.summitracing.com/parts/lub-llt-g350
Filter:
https://www.summitracing.com/parts/wix-58878
Last edited by skyhigh; January 19th, 2019 at 04:03 PM.
#12
https://www.summitracing.com/int/parts/sum-g3885b/ There is also a black pan, I like the idea of your aluminum pan. Let us know how that gasket works. One thing I did that helped these old trans seal was going tractor trans hydraulic fluid. Good luck.
Last edited by olds 307 and 403; January 20th, 2019 at 07:32 AM.
#13
Well the gasket is great, don't see any leaks from the pan gasket, the pan needed a little work to get it in, it didn't have the little bend like the old pan to get 2 bolts in by the tranny mount, so had to remove all the mount bolts, shim it back a little, wasn't easy due to old seized bolts, had to cut em, jack up the tranny a bit to get the last 2 bolts in. I still seem to be chasing a leak, I see drips coming off the black cover, any idea what I can try next, Its driving me crazy.
#16
Ah, OK. The cover over the flexplate/torque converter. Is it transmission fluid or engine oil? Most/Often times it's engine oil seepage from the rear main (rope) bearing seal. Is it coming out the hole at the bottom of the cover? Identify if the oil is engine oil or trans oil first.
#18
You can grab a small bottle of fluorescent/UV dye from any local auto parts store. Pour it into your engine oil and run the engine.
Remove the torque converter cover and clean the area thoroughly. Take vehicle for a short cruise. Visualize the area w/ a black light. The fluorescent/UV dye will demonstrate the trail of the oil.
Remove the torque converter cover and clean the area thoroughly. Take vehicle for a short cruise. Visualize the area w/ a black light. The fluorescent/UV dye will demonstrate the trail of the oil.
#20
First things first. Any chance you happened to overfill the transmission w/ transmission fluid when you filled the transmission with new fluid? This is a prime suspect if you inadvertently overfilled the fluid. Checked your fluid level both HOT & COLD?
#21
Yes i did overfill it lol..i only added 4 litres at first..i bought 10...thought i would put 4 in and run the motor..need more according to the dip stick so i added another litre and it was over
Last edited by skyhigh; June 24th, 2019 at 03:48 PM.
#22
I had my suspicion. OK. Run the engine 10 minutes. Check the transmission fluid. Ensure the transmission fluid is above the cold mark, but NOT above the HOT mark. The proper amount of fluid on a transmission at operating temperature should be as much as possible dead even between the COLD and HOT mark. Drain out some transmission fluid. You can use a siphon pump hose, or what I use is a large syringe attached to a long piece of clear tubing. It's a PITA pulling the syringe to suck out the trans fluid, but it beats dropping the pan! LOL Just ensure you get the fluid between the HOT & COLD mark. Once done drive it for several days - you'll probably be fine.
#24
Lucky You! Plugs are so much nicer. Just ensure you're below the HOT mark when the engine is at operating temperature. You might have a leak for a couple days until the previous foaming of the transmission fluid settles down from overfilling it. Drive it regularly for several days and check if the leak is still there. Chances are it will be gone.
#25
Well taking the fluid the proper levels didn't stop the leak lol..so I had enough, brought it to the tranny shop for a free diag and he told me the accumulator seal is leaking and the shifter shaft seal, so it goes in next week for the fix, he didnt have the parts i guess, so looking forward to a dry driveway. Any tips on how to the stains out?
#26
Simple green or power purple. If it’s a concrete drive, use muratic acid.
Some of the early 350 had factory drain plugs. Typical GM, they eliminated the drain plug as a cost saving measure.
Some of the early 350 had factory drain plugs. Typical GM, they eliminated the drain plug as a cost saving measure.
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