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Mod | | | Forums66 Topics128,090 Posts1,056,378 Members48,442 | | 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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Apr 2009 Posts: 40 'Bolter | | 'Bolter Joined: Apr 2009 Posts: 40 | Hi Guys , I have a 1961 Chevy 235 in my 1948 Chevy 3100 Panel Truck . It ran quiet and powerful until last week . The motor has 55,000 miles on it .I was driving about 35 mph and slowed for a red light .Just as I stopped I heard this loud metal noise and the motor started to shutter .I shut it off.I got out and looked to see if something was busted ,because it sounded like it . I saw nothing ,so I started it up and moved it to a parking lot . The motor was shuttering . I got it AAAd home on a flatbed .I took the oil pan and side cover off and I didn't find anything out of the ordinary . The oil pressure dropped about 10 pounds . Could the problem be in the head ? Thanks for any advice!!! | | | | | Joined: Feb 2004 Posts: 29,826 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,826 | Pull the valve cover and check for broken valve springs. Also, while the oil pan is off, drop the caps off the rods one at a time and inspect the bearings. Ditto for the main bearings, although if you remove the rear main cap you'll probably have to replace the oil seal. A bad bearing doesn't always show any outward signs until it's really in terrible condition. Losing oil pressure is usually a sign of excessive rod or main bearing clearance.
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: Apr 2009 Posts: 40 'Bolter | | 'Bolter Joined: Apr 2009 Posts: 40 | No valve springs are broken and the compression is 125 pounds in all 6 cylinders . BUT I'll check all the bearings .... Thanks | | | | | Joined: Apr 2009 Posts: 40 'Bolter | | 'Bolter Joined: Apr 2009 Posts: 40 | No valve springs are broken and the compression is 125 pounds in all 6 cylinders . BUT I'll check all the bearings .... Thanks | | |
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