[Formulajones]

Had 3.73's in dad's 571ci Pontiac for a while. Had 4 different converters in it trying to get the car to work and they were all loosy goosy. For what ever reason 2 converter companies just couldn't get a handle on it. I think that gear would have worked nicely if we were willing to keep trying converter companies, lol. But it wouldn't make it to the stripe either because the converters were way too loose. That's just another variable.

I think 3.73's would be about perfect if it had a converter that would get a hold of the engine. Eventually when the 4L80E went in that car I swapped it to 3.42's. Works good at the track. With a proper converter it's gone 1.47 in the 60 in a 4100 lbs car is doing pretty good, and crosses the stripe at 5400. 10.60's at 128. Shifts at 5800 so yeah it could use a little more gear and it might pick up a smidge. It's not working hard at all at the finish line.

Whether a certain gear will work good or one possibly better than another depends on how much torque you're making and if the converter does it's job. A 4L80 only has a 2.48 first gear. If it's a heavy car and a snug converter, you'll need a bunch of grunt down low to get the thing moving if you only want 3.31's or 3.42's. Otherwise it kind of turns into a slug in the 60 foot.