[Mrbret]

It’s not a 10 bolt because the post clearly states it’s a 12 bolt. After doing some research with the numbers and looking at other forms I found that it’s a 70’s rear end and is geared at 3.07 since the truck has a 292 with a th350 and np205. 3.07 is the stock gearing. My dad says the truck is slow so this would make sense. But my real question is what frame is actually on the truck. My dad clams it’s a k5 chassis but to me it looks like a k10 because the frame hasn’t been lengthen to fit the 3100 body.