7 1/4 Rear Differential ~ Experiences

I kept the 7.25 in my 65 Valiant. The rear was the last thing I swapped out. Should have done it the other way, but I didn't. It had a zero deck 360 with KB 107s, heads milled to 62CCs and ported much as they would flow, .021 MP head gaskets, 508 Mopar cam, LD340 Dougs headers, MP ignition. Real HOT 904 with 3500 converter and manual reverse valve body. It had 15x9.5 Center Line Auto Drags on the rear with MT 28/11.5/15 ET Streets. After cam break in, I pulled it into the street and yammed on the gas HARD. We pushed it back in the driveway. I put an 8.75 in it the next weekend. It stripped the spider gears down to nubs.