Sometimes, two heat cycles will work. I used to work at and asphalt plant and most of it was bolted together. Everything rusted. We would heat the nut to the point that some color appeared and then let it air cool. Then we would heat it up again and put a wrench on it. I don't know why it worked, it just did.
74 Challenger, bought it new. In 1978 I replaced the original 318 with a 446 and 727. Mild cam, Jardine headers, and Holley Sniper EFI.
New engine! 511" RB, Edelbrock Performer RPM heads, Eagle rotating assy, Comp hyd roller cam, Doug's 2" headers.
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