Edited by sluggo on 11/17/2017, 2:35 pm
The 1968 corvette used this same (321)block casting number(not suffix) and was rated at 390hp with a low profile q-jet intake manifold. In the full size cars the IS/IJ was rated at 385 hp. My Z-24 is an IS coded suffix.
Responses « Back to index | View thread »
on 11/17/2017, 2:33 pm, in reply to "