Original rear long gone. Currently 3.31 gears in 12 bolt posi with 225 70 R 15 tires on 5-bolt Corvette Ralleys. The 261 was bored .30 over, head shaved .20, Clifford 6=8 intake, Holley 390, Fentons. Tires 27 1/2" tall and 86 1/4" circumference. Has always seemed gears were a little tall especially on hilly terrain north of K.C.
Last edited by 56picup; 12/13/2008 10:40 PM.