360 Tune Up

Mattax said

Don's plate stops the advance. To then get the initial and maximum where they should be, the distributor has to be rotatated. That shifts whole curve up. Alternatively the springs can be messed with and thats not easy for most folks. The secondary spring is the most critical and hardest to find for an advance that's been stopped early.

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Thank Mattax ! I have the limiter plate but have yet to install it. Now I'm going to weld my inner slots. Good Info.
Rock Able, I hope the pulley does the trick for you. I thought for sure your shroud was the culprit blocking flow on highway but the FABO menbers here are much more knowledgeable than myself and will for sure get this figured out with you. Sweet ride you got there.
I always thought A/C water pumps move coolant slower so the radiator can cool down more and not send coolant back through hot but I don't really know .