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Mod | | | Forums66 Topics128,128 Posts1,056,661 Members48,450 | | Most Online14,466
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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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | The first red flag I see is testing it at 18psi. Any thing over
7psi on any of those heaters expands the tubes to a point that
the can be damaged. Sounds to me like the tubes have been
distorted at the header from over pressurization which weakened
them and probably lead to some cracking.
Denny Graham
Sandwich, IL
Denny G
Sandwich, IL
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