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Jul 21st, 2025 | | | | Joined: Jan 2014 Posts: 3,504 'Bolter | | 'Bolter Joined: Jan 2014 Posts: 3,504 | Have a buddy working on a gmc and just discovered he has bent push rods.
FLAPS is closed today. Rock Auto doesn't list them. Are they difficult to source?
1951 3100
| | | | | Joined: Aug 2011 Posts: 45 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2011 Posts: 45 | Take your time and investigate the reason why the pushrods are bent. Most common problem is that the valve stems are rusted and not allowing them to move up and down. Penetrating oil and tapping the tip of the valve stem only and not the retainer may loosen them up. Check all of them.
Good luck
The older I get, I only want to work on older rigs.
| | | | | Joined: Nov 2005 Posts: 6,061 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,061 | Hy JW51, you can straighten the bent pushrods, once there is nothing but spring pressure to stop the valves from moving they should be fine, hope that helps. | | | | | Joined: Jan 2014 Posts: 3,504 'Bolter | | 'Bolter Joined: Jan 2014 Posts: 3,504 | Jim Carter lists them as the same for 235/261 and 248/270/302.
He found a set from a 216 that are supposedly 1/16 shorter than the gmc. Does that seem to make sense to anyone? Would assume those are incorrect?
1951 3100
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