Found the problem. The butterfly is loose on the shaft and just hangs partially open all the time.
It was not welded to the shaft, looks like the shaft just slipped through the middle to be held by the metal folded over the shaft. I would like to just secure it in place in the proper position for a warm engine. It doesn't normally get that cold here in Central Texas, and I wouldn't be driving it then anyway. Is it possible to drill through cast iron and just secure it with a screw? Any other ideas?
Just want to say how much I appreciate all the help.
Thanks again.
Jeff
"Do not walk behind me, for I may not lead. Do not walk ahead of me, for I may not follow. Do not walk beside me either. Just leave me alone, you're starting to freak me out."
1957 GMC 150
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