The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Post pics. Lets see how many 60-66 4x4 are out there.

K-TEN · 05-19-2010, 04:17 PM

Can't speak to the later years, but the 60 and 61 K10's had a 3.90 rear ratio (3.92 at the front-they can't be numerically the same)
So 7x2x3.90 is 54.60
And the K-20's had a 4.56 rear
So 7x2x4.56 is 63.84

05-19-2010, 04:17 PM	#306
K-TEN Registered User Join Date: Feb 2010 Location: Epsom, NH Posts: 114	Re: Post pics. Lets see how many 60-66 4x4 are out there. Can't speak to the later years, but the 60 and 61 K10's had a 3.90 rear ratio (3.92 at the front-they can't be numerically the same) So 7x2x3.90 is 54.60 And the K-20's had a 4.56 rear So 7x2x4.56 is 63.84