The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

wyoman64 · 02-25-2004, 01:55 PM

Can anyone tell me an easy way to determine what gears I have short of popping off the covers and counting teeth.
'69 K20, no tach, but it's definately "screamin" at more that 60mph. Do I have 4.56's? If so, anyone with 3.73's want to trade axles? LOL Speed limit on I-90 here is 75mph and I just about get rear ended by 18 wheelers . . . Is it easier and cheaper to change the ring and pinion gears, or to just swap out the whole axle for ones with taller gears?

02-25-2004, 01:55 PM	#1
wyoman64 Registered User Join Date: Feb 2004 Location: Northern Black Hills, SD Posts: 38	What gear ratio do I have? Can anyone tell me an easy way to determine what gears I have short of popping off the covers and counting teeth. '69 K20, no tach, but it's definately "screamin" at more that 60mph. Do I have 4.56's? If so, anyone with 3.73's want to trade axles? LOL Speed limit on I-90 here is 75mph and I just about get rear ended by 18 wheelers . . . Is it easier and cheaper to change the ring and pinion gears, or to just swap out the whole axle for ones with taller gears?