Which rear end would I be better off with?

[ATI Performance Products]

Originally Posted by GTX JOHN

We have run 8 3/4 in our Volare / Aspen Stockers for many years with only
a couple of Failures in the Very Heavy Wagon at 3620 to 3850 Weight.

I would consider a looser converter 5200 (360) - 5400(318) to go with the 5:13 Gears which should be right a low elevation.

My Chassis guy said with same amount of lightning the Dana would be
40 to 50 heavier than 8 3/4. Does anyone know if he is right?

We are changing the Challenger over to a Dana right now. I need to run a 5.13 at our weight and the 8 3/4 would ratio would break in less than 10 passes. But a 4.88 would last 100 passes usually. We are 3470 lbs. And yes it sucks to break a gear with a 904 and then worry about the sprag - even with the big sprag we made for them it was 50/50 weather or not it was junked. - Also of note is that I will have 4, nice 8 3/4 pumpkins to sell! 2 Alum and 2 steel.