Re: 4000 rpm @ 55 mph
If you go to an interstate with the mile markers, you can check it against your truck odometer. It is a direct corolation to your speedometer to check if it is correct or not.
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1967 C/K10 Chevy Panel
1968 C/K20 Chevy Pickup
1968 C/K10 Chevy Suburban
1941 Chevy Sedan Delivery
1960 Chevy Sedan Delivery
1972 Camaro SS 396 #s matching
1971 Harley FX Superglide
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