3K RPM's Get's Me 70 MPH What Do U Get?

[Steeveedee]

Originally Posted by D.B

My 72 C20 Cheyenne Super has a 511 big block (approx 600 hp), Turbo 400 with a Gear Vendors, Dana 60 with 4.10 gears (final ratio 3.20) and LT305R70/16 (33") BFG tires. I know it runs around 2200 to 2300 rpm at 65 mph. The calculator says it should be 2150 rpm. At 70 mph should be around 2300 rpm and at 3000 rpm it says 90 mph.
I will say I was at Texas Motor Speedway a few years back when they were doing the Friday Night Drags and they allow vehicles to run two laps before the races start. I was coming out of turn two at over 100 mph. I stopped looking at my dash and kept my eyes on the track so I am not sure exactly what the rpm at that speed was. The race sponsor got on to me for doing that because the tires on the truck were not designed for speeds over 100 mph. Didn't want a crash before the race and ruin it for everyone.


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God's dentures that a nice looking truck!