| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,077 Posts1,055,932 Members48,430 | | 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!
| | THANKS!
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: Jun 2006 Posts: 24 New Guy | | New Guy Joined: Jun 2006 Posts: 24 | I just got the water pump and water neck off of my 235, and the build up inside the block seems to be a lot. I was wondering if there is a way to flush the block before I put it back together, and before it runs?
the old water pump had one threaded inlet on it for heater, and the new one I got from NAPA has two threaded inlets and the main outlet for the radiator, Do I just plug one of the holes or should there be one that looks the same as the one I took off?
I also was given a 12v coil at NAPA, will this be okay to run on the 6v system?
That's me in the back of my bolt on the home page | | | | | Joined: Sep 2003 Posts: 2,384 Shop Shark | | Shop Shark Joined: Sep 2003 Posts: 2,384 | I have been known to use a water hose & coat hanger,welding rod,, what ever to knock stuff loose & hose out the water jacket-you can even pull a freeze plug or two & hose it out front to back if really clogged up. brian | | | | | Joined: Dec 2003 Posts: 510 Shop Shark | | Shop Shark Joined: Dec 2003 Posts: 510 | I just did this on a 29 Model A motor. When I took the lower water neck off, I found that the block was full of dirt, sticks and (of all things) acorn shells. A squirrel or mouse must have made its home in there in the 40 or so years the A wasn't running.
I ran a garden hose and ran the water forward and backward for a while and poked around with a screwdriver to loosen any junk. There was a lotta stuff that came out, but when I was finished, I couldn't see or feel anything but the cylinders inside. I think I got it all out.
This is probably different from the kind of build up you might have in your motor but as 64Fleetside suggested, you might be able to use something in the same way I used the screwdriver to dislodge as much junk as possible. I'd sure want to make sure that the water wasn't trying to flow thru the radiator to avoid plugging it up. | | | | | Joined: Nov 2000 Posts: 1,966 'Bolter | | 'Bolter Joined: Nov 2000 Posts: 1,966 | Is there a block drain plug on the drivers side rear just a few inches above the oil pan flange? There is on my 216, in fact it had a petcock. Look for that. It will help. On my 216 I removed the old petcock and nothing came out. I poked in there with a piece of wire until it broke loose. Good luck.
Professional Novice
| | |
| |
| |