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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: Apr 2001 Posts: 31 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2001 Posts: 31 | I recently put my 37 GMC on the road. The clutch did not engage smoothly and the shifty shook. I changed the pressure plate and clutch with the extra I had, same issue. I noticed while cranking the engine, the clutch petal went slightly up and down. I think I have a bent input shaft on the transmission or a bearing problem. Anyone have a similar issue?
Mike J 37 GMC
| | | | | Joined: Jan 2008 Posts: 4,961 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,961 | Do you have a pilot bearing? It would be pretty difficult to bend an input shaft | | | | | Joined: Apr 2001 Posts: 31 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2001 Posts: 31 |
Mike J 37 GMC
| | | | | Joined: Feb 2004 Posts: 29,760 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,760 | Chatter while engaging the clutch is often caused by sloppy motor mounts. Check for collapsed or deteriorated rubber pads, particularly at the bellhousing mounts. One sneaky troubleshooting trick is to temporarily rig a piece of chain and a turnbuckle from the cylinder head to the driver's side frame rail and put just a little tension on it to prevent the engine from rocking as the clutch is engaged. If that cures or minimizes the problem, install new motor mounts.
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!
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