I just bought a 72 Ford Q Code 351C and the original C6 that was with it. It included the torque converter and the guy claimed it is a 3000 stall. I'm looking for a way to ID the converter to see if it is actually what he claims it is.
The converter is natural, no paint. The only engraving I find is "30" stamped on the transmission side.
I get conflicting remarks about Ford using a 3000 stall converter behind the Cobra-Jet motors, even on the many websites I can get info from. Doesn't seem to be any way to prove it.
Should have been a #67 or #69 to be a real CJ converter per the MPC.
Don't worry, there were never any 3000 RPM converters stock from Ford.
Two ways to verify your stall:
1) Cut it open and look -- needs an expert in torque converter design (see our banner sponsor)
2) Put it in the car and do a brake stall per the Ford test sequence.
The factory stall converter behind the CJ motor used a smaller bolt pattern than any other 351. I believe the bolt pattern was 9.5 inches (like a pinto converter)give or take a smidge and it used a one of a kind flywheel. The stall speed was more like 2400