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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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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: Dec 2001 Posts: 15 New Guy | | New Guy Joined: Dec 2001 Posts: 15 | what is the best way to drain the entire cooling system, block and all, on a 235? | | | | | Joined: Feb 2001 Posts: 1,897 Member | | Member Joined: Feb 2001 Posts: 1,897 | Get some radiator flush follow directions.drain the system by opening the draincock on the bottom of the radiator and the one on the side of the block(may have a plug in the place where a draincock can go). There should be one on each side of a V-type engine,but on your 235 it will be on the driver-side toward the rear of the engine.(you can install draincocks in the place you removed the plugs). Put in some radiator sealer/conditioner and add 50/50 mix of antifreeze/water. 
There is enough good in the worst of us and enough bad in the best of us that it does not behoove any of us to criticize the rest of us.
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Be yourself. If you are ever lost, It will be much easier to find yourself if you know who you are!
| | | | | Joined: Jan 2001 Posts: 428 Shop Shark | | Shop Shark Joined: Jan 2001 Posts: 428 | Usually that draincock on the block is plugged up. If so just remove the draincock and poke and prod the hole in the block with a small screwdriver till you get the coolant to flow out. | | |
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