Quote:
Originally Posted by P@blo
I believe the 5c heads at pretty much the same as the 6X castings and have an early date code on the ones I have. January 75 actually and they look as good as the 6x heads I have.
Does anyone know if the early 5C heads are prone to cracking or was that sorted out on the 4X castings?
|
Have yet to run across a crack problem with multiple pairs of 5C's. Have been fortunate with two pair of 4X 400 heads that I pulled for date codes & condition.
BTW, January dated 5C's was close to the end of the production line for 5C's. 6X's began to be cast in Feb of '75. Years ago, I stripped an original 350 engine with a 5C-4 on one cyl bank & one of the first 6X-4's on the other cyl bank.