Isn't vertigo fun? NOT! Hope your camshaft has not gone flat on you. Small block Chevys have sometimes had problems with soft cams. When the lobe wears down, it ruins the lifter, making the contact end concave and also leaving way too much clearance in the lifter-pushrod-rocker arm-valve assembly. It also puts lots of metal shavings through the engine.
If you haven't tossed the old filter yet, you might want to cut the cover off to see if there are many metal flecks in it. If so, uh-oh! If you can identify the cylinder or cylinders that are ticking, you might want to remove the valve cover on that bank to see if one or more of the rocker arms is looser than it should be. Rocker arms can go bad too, and if you get really lucky, a new rocker arm and ball might fix the problem. Many years ago I saw where a pressed in rocker arm stud had pulled out a bit, and after the owner readjusted the rocker arm nut, it pulled out the rest of the way the next time he drove the car. That made a lot of noise! But it wasn't that hard to fix--we tapped the hole and put in a proper screw-in stud. It didn't even ruin the pushrod or rocker arm.
Rislone has dissolved gum in some engines and helped sticking lifters. Trying that is the easiest thing to do first. If the noise clears, you probably want to change your oil lots oftener.
Hopefully your camshaft has not gone flat, because the only way to fix that is to replace the camshaft and lifters, which is a pretty big job. And then too, you also have the problem of lots of metal filings inside your engine, which could cause many other problems. If the engine has many miles on it, I think I would consider rebuilding rather than just putting in the new cam and lifters. But that's just me.
And I hope your vertigo goes away. I have had Meniere's Disease for years and I know how really messed up I feel when I have vertigo episodes. They are awful! Good luck and take care.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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