Over the winter I'm mini tubbing my Dart and will be buying a S60 to go in it. I already have the new tires and wheels for it, Weld 15 X 10 with 3.5" bs and MT 325/50 ET Street Radials. The 8 3/4 I'm replacing had 4.30 gears in it, I'm considering going with 4.10 in the 60. This is in a street/strip 3300# 69 Dart with a pump gas 408. It's in the 550 hp range.

The 408 only has 10 passes on it including the one that shucked the ring gear teeth. The only clean pass it's made it ran (1/8) 6.61 @ 102.24 with a 1.41 60'.

I had the 340 in it when I went from 3.91 to 4.30 and it only picked up .06 and all that was in 60'. The 340 ran a best of 7.24 with the 4.30.

What do you guys think, 4.10 or 4.30? It doesn't get driven a lot, but I think 4.10s with the 28" rear tire would not be a bad drive.

Thanks, Justin