Mounted the 12" fan that came boxed with the Jimmy and the fan controlled kit I had ordered. Disconnected and plugged all vacuum ports except to the dist. Started it up, let it fast idle a couple minutes then kicked it down-- and -- it idled... Ran it for approx 20-25 minutes. No knocks, pings or metal on metal sounds and no smoke.
The 49's OEM oil pressure and temp gauges weren't hooked up and don't look like they've been in a long long time. Going to order a mechanical 3 gauge under dash cluster now that I think the engine is good.
Once the electric fan kicked on it never turned off. It's got a 200 on, 180 off sender switch which is probably too low. This 250 probably normally runs around 200, will research that. The 12" fan may be too small too. I tried the small OEM sender switch and it wouldn't turn the fan on. It's either bad or that small 12" fan kept the temp down just enough to keep it off. At $8 I'm going to order a new OEM sender switch as I need the larger port where I installed the new sender switch for the temp gauge. It idled, didn't overheat and I didn't see any air bubbles in the radiator so I'm calling it a good day.
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Running and idling
