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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: Mar 2014 Posts: 161 Shop Shark | | Shop Shark Joined: Mar 2014 Posts: 161 | The last time I had to do this it was in a 283. Easy stuff.Just put a socket on the pivoting nut and turn it while listening to the motor. But a 235? I have to get the screwdriver into the slot of that stud that is moving up and down,back off the adjusting nut and then turn the screw ,all the time with the tools and my hands moving up and down with the cam action. There has to be another way to do this. Is there? What is the trick? Gratefully I only had a minor adjustment to make. I can't imagine having to do this twelve times.---Jack | | | | | Joined: Feb 2001 Posts: 1,094 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 1,094 | Start the engine, get it hot 30 minutes running, Turn it off and adjust the valves.
Tommy
59 apache 1/2t
261 short stepside
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | | | | | | Joined: Feb 2004 Posts: 29,811 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,811 | Running adjustment of hydraulic lifters is not a good idea, since the lifter is getting slapped by the cam lobe several times a second. Warm the engine up for several minutes, then stop it and follow the firing order like adjusting solid lifters. From top dead center on the compression stroke, loosen the adjustment to allow the lifter to top out completely and tighten the adjusting screw anywhere from 3/4 to 2 turns, depending on whose advice you're following. One turn past the "zero clearance" point works well for me on stovebolt hydraulics. There's also a sneaky trick about putting a shallow groove in the ball end of the pushrod to allow trapped air in the lifter to escape that's outlined in a tech tip.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Mar 2014 Posts: 161 Shop Shark | | Shop Shark Joined: Mar 2014 Posts: 161 | Did the groove for air release and it worked slick.---Jack | | |
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