Those Running 3.73 And a TF w/ LockUp.. What's your highway Driving Like?

6-david-5 said
My '68 Dart has a 383/727 and I went from 3:23 to 3:91 because I hit the track last October. 27" (255/60-15) radial.

With the 3:23's, I drove the thing everywhere. If I wanted to keep up with feisty L A traffic I could cruise at 80 and the tach would read 3500 or so rpm. Now that I have the 3:91's on it and the track day is long over, I think about my freeway drives now--70mph and 3600 rpm! In L A, you need to move aside! Or if I'm inclined to pass cars "for a second", I'll hammer it and it will read 4200-4500 rpm for a bit and I am able to keep up! I feel like if I want to keep the gears on, I should probably consider a Gear Vendors OD.

Or, give up the noticeable off-the-line torque increase and reinstall the 3:23's! It turns into a quandary!

You may be a prime candidate for a set of 3:55's if you want 1 gear set.

David

A quandary indeed!

I looked at the 3.55s originally. The RPM difference is only a few hundred below the 3.73. I may occasionally hit a track but it's mostly just a fun driver..PS,PB, Factory AC, Bench a Column Shift.. Something for the wife and I to have fun in.