I have a chance to buy a set of 186 heads for my 04C (april, 3rd week) Z/28. THe block cast date is C189 (march 18, 1969) and the head dates are C69 and C79 (March 6, 1969). The engine build date is 0402 (April 2, 1969)
I have a chance to buy an extra set of 186 heads dated B179 (feb 17, 1969). THese are 6 weeks, and 2 days from my engine build date.
Is 6 weeks, 2 days (from head cast to engine assembly date) to much time to be realistic?
Need fast response... Thanks