I have used both the .484 and the .474 cams in street cars. Both screamed in the cars but they had the right setup. I had the .474 in a stock 340 Dart with headers and a 650 DP. It had 4.10's and it would smoke the tires from a 15 mph roll. Took it to the track and ran 13.49 @ 105 on real street tires. I had the .484 in my old 383 Dart that was a stock 383 with bolt on's and some mild pocket porting on the 452 heads I used. Click the link for the details. It ran 12.30's @ 110 best with 3.91's after I switched the Torker intake for an RPM. I do agree for your car the .474 would work better then the .484. But if you plan to keep the 3.23's I would call a cam company and have them grind you a cam for your application. Ron

http://www.bigblockdart.com/ron_nies/ron_nies.htm