Friend of mine got a converter and it looks just like any other externally but he's fairly certain its aftermarket. I did some web surfing but can't find anything based on numbers. Maybe someone here can help identify it.Stampings: It has "5V" stamped all the way around it. Other stamped numbers are IC 526 K2 (grouped together) and 6428. There's also an "L" stamped randomly in the middle and a "2" also stamped in the middle of nowhere.There's also a hand written number that looks like it was put on with a paint pen then hidden by the previous owner who sprayed the entire converter black. The number is 7799 H/5.Oh one more thing. He has a non lockup converter he wants to put in a lockup transmission (700r4) and is under the impression it will act as a lockup. I'm no transmission expert but I'm fairly certain it requires a lockup converter to implement the lockup feature. Otherwise the TCC solenoid won't be doing anything when it engages because it's the wrong converter. Am I correct here? If so... can a non lockup converter be used at all in a lockup transmission and if yes do any changes need to be made to the transmission?Thanks in advance.
i am going to let the other forum members do most of the answering.. as i still need more sleep...but .. and this is a torque converter catalog with Pictures... its 305 pages so i hope you have high speed..perhaps it will assist you in identifying STOCK converters...aftermarket converters can only be identified by the original rebuilder via any numbers they stamped in.. or.. by cutting them in half. and looking at the insides..measuring freeplay first.http://www.daccoinc.com/pdfs/catalogs/2012%20Torque%20Converter%20Catalog.pdfhope this helps..and you can get custom NON LOCK UP CONVERTERS for lock up transmissions in some cases.. talk to a converter builder or check the catalog for some popular replacements.. THERE ARE A LOT OF DIFFERENCES between transmissions and between years of transmissions.. that JUST WILL NOT FIT.. or work.