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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Mar 2014 Posts: 4,484 Moderator, Electrical Bay | | Moderator, Electrical Bay Joined: Mar 2014 Posts: 4,484 | I just bought a roll of 1/2 inch copper tubing (flexible) and wound it around a coffee can leaving about 1/4 to 3/8 inch between rows and then repeated the same for another row leaving about 5 inches to be bent and sent through the firewall. You could do the same basic thing if you needed a square or rectangular shape, however mine was round. It generated plenty of heat and only cost me about $30. There's no way you will blow it out...copper plumbing withstands plenty of pressure. Good luck!
~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end
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