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06-11-2010, 07:22 PM | #1 |
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Join Date: Nov 2008
Location: cove, tx
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Oil Pressure
Hey guys, I am putting a big block in my '77 that had a 305 in it. I am having a hard time finding the oil pressure sending unit for some reason. What's up? I believe it's a mechanical guage, not electrical, so... does that mean that i just run the 1/8th inch tubing to the threaded hole, and the guage does all the work? I have an actual oil pressure gauge in dash, not just a dummy light if that helps.
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'07 Classic '77 C-10 Longbed (under construction) '10 Jeep Unlimited |
06-11-2010, 08:08 PM | #2 |
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Re: Oil Pressure
Basically, that's all you do. Usually though, a mechanical gauge will come with the fitting for where the old sending unit went. All the gauge does is measure the pressure going to the gauge, hence your oil pressure. Also, you do NOT want to over tighten the fitting where the line goes into the block fitting. It will ruin the ferrel inside and you'll easily get leaks. Also you may want to use some teflon tape on the fitting that goes into your block and at the line connection.
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'69 Dodge Charger R/T 440, 727, 3.55 Sure Grip '68 Plymouth Road Runner 383, 727, 3.23 Sure Grip '89 Dodge Diplomat ex cop car 408, 727, 3.55 Sure Grip '77 Dodge Monaco ex cop car 440, 727, 2.71 '79 Dodge 'Lil Red Express pickup 360, 727, 3.55 Sure Grip '12 Dodge Challenger SRT8 392, M6, 3.92 '85 Chevrolet C-10 SWB 2wd 305, TH350, 2.73 Last edited by 85Bowtie; 06-11-2010 at 08:09 PM. |
06-11-2010, 09:27 PM | #3 | |
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Re: Oil Pressure
Quote:
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-Andy '77 K5 Blazer '78 K10 Shortbed '78 C20 Suburban '79 K30 Crew Cab Dually '84 C10 Short Stepside '88 K20 Suburban |
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06-12-2010, 05:49 AM | #4 |
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Re: Oil Pressure
Thanks ya'll
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'07 Classic '77 C-10 Longbed (under construction) '10 Jeep Unlimited |
06-12-2010, 08:45 AM | #5 |
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Re: Oil Pressure
just above the oil filter.....
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2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 6” lift 1999 GMC Yukon 350/4L60 4" SAS |
06-12-2010, 09:49 AM | #6 |
Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
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Re: Oil Pressure
And depending upon how old the big block is and if it is a 4-bolt dedicated casting you may need a very large pipe thread adapter to get the oil pressure fitting on it. Some 4-bolt blocks use a 1" pipe fitting for oil cooler outlet that is what you tap into for a gauge. I had to find one of those for my 68.
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miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
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