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Jul 21st, 2025 | | | | Joined: Jun 2023 Posts: 143 'Bolter | | 'Bolter Joined: Jun 2023 Posts: 143 | Would I have any issues using a 1950 0-30lbs Oil pressure gauge with a 1954 235 Chevrolet engine. The engine was holding over 40lbs while testing on a portable stand. Just asking before I purchase 0-60lbs gauge.
Thanks Red
1950 5 Window
| | | | | Joined: Feb 2016 Posts: 1,841 'Bolter | | 'Bolter Joined: Feb 2016 Posts: 1,841 | Analog gauges are designed to be most accurate at mid-gauge. If the 30 lb. gauge is pegged on start-up and cold oil, it will probably affect the accuracy from that point on. I would run a 60 lb. gauge
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
| | | | | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | +1 on the 60# gauge. Hot idle with good rod and main bearings should probably be somewhere in the 20+ pound range, depending on the weight oil you're running, and a little higher at highway cruise RPM. A GMC gauge has a 0-60 pound range, and will fit the original dash cluster.
Jerry
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| | | | | Joined: Apr 2007 Posts: 1,002 'Bolter | | 'Bolter Joined: Apr 2007 Posts: 1,002 | Two of my trucks came with stock 30# oil pressure gauges ('42 and '50 COE) and replacement 1958 235 engines. Clearly, it would be best to use a 60# gauge, but who makes such a gauge for a '42 cluster? Both trucks pin the gauges on startup and register 20-25# on hot idle. Pinning the gauge does not seem to affect or damage the gauges as I have been running the '42 that way for 30+ years and the ''50 for 15 years. In essence, the gauges act sort of like oil pressure warning lights. They would only help if the oil pressure is too low.
Red, either way works. I would do whatever fits your budget and your plans for your truck.
Kent
Last edited by Lightholder's Dad; 01/29/2024 5:37 PM.
| | | | | Joined: Jun 2023 Posts: 143 'Bolter | | 'Bolter Joined: Jun 2023 Posts: 143 |
1950 5 Window
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