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| | | | Joined: Jun 2020 Posts: 73 'Bolter | | 'Bolter Joined: Jun 2020 Posts: 73 | Apologize if this should've gone in a different area. I'm looking to see what the fitting size is on the back of the oil pressure gauge on my 54'. Mine was missing. I put a 350 in but I'm still utilizing my original gauges. I purchased a new 1/8" copper tubing kit from Bosch. I have the 1/8" NPT male in the kit for the block but I'm struggling with the proper fitting for the gauge for the copper tube to fit in to. In the kit they supplied 1/8" NPT female fitting. It appears the gauge fitting might be a 5/16-24 male. In looking at different kits some appear to just have standard fittings where some have what looks to be a specialized fitting for the 1/8" tube for the gauge. Not sure if that piece is needed or not based on the "kits" between vendors specified for the truck. Any information on this fitting or if I should just buy an entire proper kit are welcomed. Thanks
Adam
Adam
| | | | | Joined: Feb 2016 Posts: 1,996 'Bolter | | 'Bolter Joined: Feb 2016 Posts: 1,996 | That fitting is a type of compression nut, it doesn't use the typical compression ferrule that you see on plumbing lines. If you have a NAPA auto parts or older type auto parts you should be able to find the fitting. Possibly one of the major auto parts chain stores could have it in a tubing/fitting kit. Summit Racing has one for 47-70's Chevy truck oil pressure gauge kit.
Last edited by 78buckshot; 06/03/2024 10:42 PM.
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: Sep 2009 Posts: 6,034 Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT | | Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT Joined: Sep 2009 Posts: 6,034 | Adamg, Just a note to say I just saw your post and as it deals with gauges will probably be best further discussed in the Interiors forum. It's been moved there for further help and info. 
~ Dan 1951 Chevy 3 window 3100Follow this story in the DITY Gallery"My Grandpa Carl's Truck and How it Became Mine"1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
| | | | | Joined: Jun 2020 Posts: 73 'Bolter | | 'Bolter Joined: Jun 2020 Posts: 73 | Good call on NAPA. Thanks. I tried one of the chain auto parts here in town and they had no clue. I like going to NAPA but there’s 4 other chain stores before I get there. So I normally grab it from one of those others. I just decided to buy the kit from NAPA. Picking it up tomorrow as they didn’t have it in stock.
Update…. Wrong part. But it looks like I can get it from one of the online vendors.
Last edited by Adamg; 06/06/2024 12:36 AM.
Adam
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