Does anyone know the correct color of the tranmission pan on a TH400? Should it be painted bare steel or black? Thanks.
hmmmmm-- It seems like every original trans I've had had a black pan????? Hard to believe they would put bare steel on the bottom of a car facing the road...
I have a NOS TH350 pan in the shop. Still in the GM box.Bare steel with what looks like a clear rust inhibitor as a finish. TH400 made the same?
There is a wax like paper in the box as well. States it's also treated with a corrosion inhibitor & keep back side to the product.
they were always natural. My dad worked at a GM dealer in the 70's as a trans rebuilder and he said he never saw a black pan. Also if you really want to be correct, the original 400 THM pans for our Buicks would have not any writing, the later replacements are embossed with "Turbo Hydramatic". Finding good condition (meaning undented) original pans is getting to be tough. They usually don't rust too bad because most of our old Buicks leaked enough oil and transmission fluid to protect them.
My pan must be a replacement since it has "Turbo Hydramatic" stamped into it, and is deeper than a stock pan. Thanks to everyone for the info. :TU:
