[Kilohertz]

Thanks for the input guys, appreciate it.

As mentioned I machined a GM distributor to fit the flathead so manifold vacuum is where I have connected it. This is the classic location before emissions based ported vacuum came about. I will experiment with both once the truck is driveable but for now, the engine just runs smoother like this.

Charlie, thanks for the compliment. I was having issues with my borrowed Snap-On adjustable timing light but from what I could manage, it was only 16* at ~2000RPM, and it has the original bushing on the mechanical pin, I will try a sleeve on the vacuum can pin to see how it changes. I just found it interesting how different the exhaust at idle sounded with the difference in timing.

Cheers


My distributor is 1112047