The numbers mean nothing to the best of my knowledge (might be wrong), but in 1964 there was only one converter for the 904, 11", narrow ring gear, 1.550 pilot and of course 18 splines. It is used on all engines, leaning tower of power and V8's. The #403 might be the rebuilders part number, but I can't say that for sure. It's been rebuilt for sure as the factory never painted converters. Hope this helps.
They did too! They used that delayed reaction paint. I forget what it's called.....oh yeah, I got it. Rust! LOL
For the early 904, no matter what engine (225 or 273) there were only 2 converters available. 1960 to early 1962, and late 1962 t0 1967. Both had 4 mounting pads, slotted hub, 1.550 pilot, 18 splines and no weights. The difference between the two is the number of teeth on the ring gear, the early one had a 148 tooth ring gear and the late one 122 teeth. Have I no information on the stall speed, but on a bad guess, less than 2000 rpm??????
Thanks transmanFor the early 904, no matter what engine (225 or 273) there were only 2 converters available. 1960 to early 1962, and late 1962 t0 1967. Both had 4 mounting pads, slotted hub, 1.550 pilot, 18 splines and no weights. The difference between the two is the number of teeth on the ring gear, the early one had a 148 tooth ring gear and the late one 122 teeth. Have I no information on the stall speed, but on a bad guess, less than 2000 rpm??????
And Rusty, you're correct, the delayed paint was rust. I sure would have like to have the patent on it, as it's the only common paint job on all FACTORY converters .
