I was just wondering if that circuit had a purpose inthe old poly "a" motor block...the LA (Late A) is essentially the same block design as the old "polysperic" 318 of the early 60's, they basically adapted wedge heads to the old block.....believe it or not

I'm just wondering what the original purpose of the bypass circuit was.

Spent 2 hours clearancing for the Aluminum rods, it would have been less work to clearance a 4.25" arm