Originally Posted by 79410aspenrt
Originally Posted by A/MP
Before that "OOHHH boy"" onslaught begins, tell us what you have car/motor/suspensionwise and where you are HP/ET.


77 RoadRunner tube chassis. 2750 lbs race weight. 340 W2, runs 10.0's at 132 mph. ladder bar suspension.

i want to upgrade the diff as i will be building a new engine. should run in the 9.30-40 range


A Dana might work for you, just depends on what gear ratio you need. These days it is probably smarter to go with a nine inch, especially if you might be selling the car down the road. I changed from a Dana 60 to a 9 inch in my Duster since I couldn't buy the correct ratio for the Dana.

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