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Jul 21st, 2025 | | | | Joined: Mar 2004 Posts: 83 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 83 | Hey all!! It’s been a long time since I’ve dropped in. I have my 1948 Chevy PU that my grandad installed a 1955 235 in in the 1970’s. In 1983-1984 I restored the whole truck. Drove it off and on from 1984 to 2007 as I was in the Navy. It would sit then I’ll get it back on the road. In 2007 I was daily driving it and put it in storage at my dads house when I retired from the Navy and moved to Alaska. Fast forward to 2022. I moved back to WA in 2019 and got the truck over to my house in 2020. In 2021 we drained the fuel installed new plugs got it to fire up. Not well but running. Rebuilt all the brakes then got busy with life again. Today got it to fire in ether. But not carb. Changed fuel filter and rebuilt carb. Installed new plug wires. Got it to fire up and run but not idle. Also this time started to overheat while running.
So my question is the upper hose and top tank were super hot but the lower hose and radiator is cool so I think it’s a stuck thermostat.
Additionally it is still running like it is running on 4 cylinders. Am I looking at the possibility of stuck rings? Something else?
Thanks again!
Garry
Garry K in Pac Nor West
1948 Chevy PU 235 SM420 4 spd
1932 **** B pu
1964 Datsun 4x4 with SBC, SM465 4spd and Rockwell xfer Dana 44Fr and 12 Bolt Rr.
| | | | | Joined: Apr 2005 Posts: 7,442 Bolter | | Bolter Joined: Apr 2005 Posts: 7,442 | Possibly bent push rods if you didn’t wake it up properly. Time to do a compression test.
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: Jan 2022 Posts: 1,987 'Bolter | | 'Bolter Joined: Jan 2022 Posts: 1,987 | And before you try to crank it again get that year old gas out.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
| | | | | Joined: Jun 2021 Posts: 157 'Bolter | | 'Bolter Joined: Jun 2021 Posts: 157 | I'm in the same boat.
Fresh rebuild 261 - driven less than 500 mls (without any problems) - than sat for over 10 years, now it's not firing on cylinder 2 and 3 - tons of gas in the oil.
Checked all the usual suspects from stem seals, valves, pushrods, electrical, carb etc. - no dice yet.
First (dry) compression test was fine, gonna do a wet one next, and also a leak down test.
Can't think of much, which caused that on a perfectly fine engine, just by sitting several years. | | | | | Joined: Mar 2004 Posts: 6,189 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,189 | Your fuel pump could have a hole in the diaphragm from sitting for so long and it's now pumping gas into the crankcase. Mike B  | | | | | Joined: Jun 2021 Posts: 157 'Bolter | | 'Bolter Joined: Jun 2021 Posts: 157 | Got an electric pump, original hole is blocked.
With an engine not firing on 2 cylinders, of course you get gas in the oil. | | |
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