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Mod | | | Forums66 Topics128,036 Posts1,055,454 Members48,422 | | 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: Mar 2004 Posts: 6,214 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,214 | I capped the outlet and connected the garden hose to the other and turned on the water. The air pressure methods above would be ideal. Pressurize it then submerge in water. Be careful connecting your heater core to the house water system...most houses operate from 30 to 60 psi (or higher if on city water) and that's way more than the core can handle. Mike B  | | |
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