Question for Bison

[bison]

Bison, not trying to correct or proofread you, but i'm confused. you said above "the second one even though it's making more hp" but the figures are 800 and 650, respectively. But my real question in response to all the replies is..... and i'll put in terms that i understand, don't know all the proper terms for converter parts...so, the outside of the converter, which is spinning with the engine, spins the inside of the converter, which spins the transmission. So, when the transmission shifts, the engine (outside part of converter) slows down, while the inside is still spinning faster.? so "rpm vs. hp ability".... the ability for the engine(outside part of converter) to catch back up with the inside??? sorry this sounds so stupid, and i appreciate all of the replies...

The 2 speeds that are looked at are the engine speed and the driveshaft speed so the outside of the converter is spinning faster than the transmission input shaft. 800tq@4500rpm is less horsepower than 650tq@6400. 800tq@4500rpm is 685hp. 650tq@6400 is 792hp. Even though the 800tq example makes less power it will couple later than it should if the converter built for the other example is used in that car. If the converter built for the 800tq example is used in the high hp applaication it will probably have too much coupling ability and pull the engine down too far and will likely hurt the car in the 330' because it won't get into the power band as fast and drop too far below it on the ratio change. That's why I always talk about the stall speed under full power with ptc 9.5" converters. It's easy to see that number. Just look at the rpm at the shift point.