Harrell,

I might have lead you down the wrong path on this, hence the confusion. This was a break over year for how oil was supplied to the rocker assembly. I won't blabber anymore, it would be easier to look at the links I provided and see if they make sense.

The top link is what I thought you had. Evidently it's possible to have the system described in the second link depending on the true engine size and year. Keep us posted.

http://chevy.oldcarmanualproject.com/shop/1938/38csm149.html


http://chevy.oldcarmanualproject.com/shop/1948_51truck/51ctsm0638.htm

Stuart