Need help figuring out rear end gear
Ok guys I currently have a 250 mated to a Saginaw from a car. In fourth gear (no overdrive) going 60 mph my rpm is about 3200. I'm running a 28 inch tall tire but from what I'm seeing online I have a 4.56 in the rear. Does that sound right? It's a lwb 67 c10. I checked the numbers on the rear end and it days it came with a 3.73. I hope I can put a lower gear in and it's a 4.56 because highway driving is terrible right now.
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67 C10 "Big Red"
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