8 1/4 sure grip remanufactured,27 spline,for the larger numerical gear ratios,purchased from a differential shop 240.00 delivered anywhere in the lower 48 from port orange,fl. 32127 paypal or postal money order.
i seem to remember a link to an 8 3/4 housing casting # i.d. chart that listed the casting's pinion diameters and years manufactured,trying to confirm a 985 is an early 742,thank you,john.
'67-'68 big block 4 groove crank pulley wanted, newer years grooves are spaced too far out,first groove must start aprox. 7/8" from the base,if you can help me please pm me with shipped price to 16354,thank you,john.