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Mod | | | Forums66 Topics128,065 Posts1,055,863 Members48,428 | | 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!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Sep 2010 Posts: 698 Shop Shark | | Shop Shark Joined: Sep 2010 Posts: 698 | What would cause all 16 rocker nuts to come loose? One so bad it let the rocker jump off the valve. At first I thought it was just a bad nut on that one,, but they are all very loose. 16 bad nuts???
oh yeah, it's a 305 bored and stroked to 340 - I know, but I wasn't the one that did it.
Last edited by johntsmith; 09/04/2013 6:06 PM.
My Fleet: 19411953195919651966 1953 Willy's Pickup John Vegetarian- old Indian word for bad hunter
| | | | | Joined: Jun 2012 Posts: 1,747 'Bolter | | 'Bolter Joined: Jun 2012 Posts: 1,747 | Rocker nuts on a small block should be self locking type. You may have standard nuts and they will work loose. A set of new nuts would not be expensive. If there is enough stud above the nuts you could double nut them and lock them together. Are the nuts "rounded" at the bottom to match the rocker? If not do you have a rounded collar that matches the rocker? Take the time to give it a good look.
Steve H
| | | | | Joined: Jun 2012 Posts: 1,747 'Bolter | | 'Bolter Joined: Jun 2012 Posts: 1,747 | My bad. I thought this was a V8. The rockers on a 305 are shaft type just like the inline 6. I have had rocker shaft support nuts come loose and keep a valve from working. I would guess the nuts were not torqued properly to begin with. Try to get the correct torque settings and it should be fine. Gotta pay better attention, I gotta pay better attention....:0
Steve H
| | | | | Joined: Aug 2012 Posts: 1,214 Shop Shark | | Shop Shark Joined: Aug 2012 Posts: 1,214 | Double check each pushrod, just to make sure they aren't bent. if the lock nuts were properly tightened when the last adjustment was done, they could easily work loose. Good luck Dave | | |
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