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Labor Day Putting down your wrenches or time for
MORE wrenching? 
Plenty of places to share. | | Click on image for the lowdown. 
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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!
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| | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
The crud was so deep and thick in my 261 that I had to remove the drain tap on the lower rear of the driver's side of the block and use a piece of #12 copper wire to slowly loosen the crud. Every so often I would clean-out loosened material with a hose sprayed into the tap hole or a hose connected to a heater hose fitting on the water pump (thermostat removed).
This is much easier to do with the engine off and the water pump removed.
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