59 L engine

[ford38v8]

Originally Posted by Flathead Fever

I buy flatheads and file them away for future use. I have at least a dozen of them. I bought a 59L motor just because of the "L" and when I pulled the heads it wasn't factory relieved. Apparently not all 59L motors were relieved.

That makes sense, as I’ve heard that not all 59L blocks were in trucks.
I wonder which came first, the factory relief or the backyard port & relief?