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  1. iamtherealJayy

    LS swap lost oil pressure

    Finally got off early enough today to tinker on the truck, installed a tachometer and a temporary mechanical gauge with nylon line. Truck at idle is around 32psi, 1500rpm is at 50psi. 2500 reaches 60. After a rev it usually hangs out around 35-40 at 450 idle. I ordered a new sensor to replace...
  2. iamtherealJayy

    LS swap lost oil pressure

    I finally found an affordable mechanical gauge locally. Whenever I finally get time to install it I will. For now I’m driving the 87 again.
  3. iamtherealJayy

    Question about exhaust 5.3 LS Swap

    In my 1978 k10, 4speed manual, 205 tcase, I ran the stock truck/Tahoe manifolds and downpipe but had the drivers side cut, rotated, and rewelded before the o2 sensor to clear the mechanical clutch linkage. I recently had my exhaust done by a local shop(I supplied all the tubing) they used 2-1/4...
  4. iamtherealJayy

    LS swap lost oil pressure

    The tab on top of the gauge showed 9.6 for resistance, after some reasearch 0 is 0 psi and 90ohms is 60psi? (For ‘78 and newer style sensors?) could I check directly off the sensor and see what it reads? The sensor isn’t super accessible I really don’t know how I’m going to get it out later.
  5. iamtherealJayy

    LS swap lost oil pressure

    Disconnected positive, checked various locations on the engine with red lead, black lead on neg at battery, ohms 200 and the highest value I got was 7.8 at the top of the throttle body. Everywhere else shows 00.0 and if it showed anything higher I could move it a little and get 0. I went...
  6. iamtherealJayy

    350 TBI o2 sensor

    What are some signs I need to upgrade? Or is this something I should just go ahead and convert to a three wire since I have nothing currently?
  7. iamtherealJayy

    350 TBI o2 sensor

    I purchased a direct replacement single wire, inform me on the newer style? I’ve currently got the truck gutted because the carpet behind the front seats kept getting wet, found out the rear seat floorboard is rusted up the whole way around the seatbelt mounts for front seats, I have no idea...
  8. iamtherealJayy

    350 TBI o2 sensor

    @Scott551 ive got it, gotta figure out what I want to do for exhaust and have a new bung welded in
  9. iamtherealJayy

    LS swap lost oil pressure

    How to I check the ground for the sensor? It just screws in behind the intake? If I didn’t get it tight enough could that cause this issue?
  10. iamtherealJayy

    LS swap lost oil pressure

    Then again I don’t know where he hooked his gauge, he could’ve hooked directly to the pump, or not done it at all, I’ll never know. But you cannot make me believe the truck has 0 oil pressure and such delayed oil pressure with rpm and sounds so quiet and smooth
  11. iamtherealJayy

    LS swap lost oil pressure

    @Ricko1966 @peats @Buck69 Got the truck back from exhaust shop, truck fired right up at his place 0 oil pressure, no engine noises at all, backed out in the road took off averaged 20 at 55mph and got over 40 when going through the gears, 0 at idle. What gives? He said he hooked a mechanical...
  12. iamtherealJayy

    LS swap lost oil pressure

    I asked the shop if he had a way of checking it and he said it wouldn’t be any issue hooking up a mechanical gauge, I’ll have results at the end of the day hopefully. And an exhaust of course lol
  13. iamtherealJayy

    LS swap lost oil pressure

    Yes, the gauge and sensor are from the prior 350, which actually did have oil issues. Pressure was worse than this one and the rings were shot etc, the shop that’s going to do my exhaust today does other work, he just so happens to have a tubing bender and welder so I’m having him do exhaust...
  14. iamtherealJayy

    LS swap lost oil pressure

    The junk on the filter could be sludge? There was a little bit in the very bottom but other wise the engine was clean. I did get some paint inside of it from cutting the filter open. The oil was very black despise only having 100 miles on it. There was a slight metallic inside the filter but...
  15. iamtherealJayy

    LS swap lost oil pressure

    @Ricko1966 do you have a tachometer recommendation that would directly work? My cheap Amazon tach doesn’t have a functional 4cyl setting. There’s a “switch” on the back but it doesn’t do anything since it’s not connected to anything on the inside.. and where’s the easiest accessible location to...
  16. iamtherealJayy

    LS swap lost oil pressure

    And the results are in, I used an ACdelco PF61E filter and Quaker State 10w-30 oil(5qt) and one quart of Quaker 5w-30, prefilled the filter, installed, filled oil, fired engine and, No change, it took a second to build pressure and went to 15 psi, I never checked with a mechanical gauge but it...
  17. iamtherealJayy

    LS swap lost oil pressure

    Here’s the filter, I’ve got it all back assembled about to refill with oil. Does the short/tall filter make a difference? I saw somewhere it did and I had the taller filter. I also noticed 08/22/05 on the inside of the oil pan, so the engine must be from 05? Just with an older ecu? I thought it...
  18. iamtherealJayy

    LS swap lost oil pressure

    Progress so far Best way to clean the pan and pickup screen?
  19. iamtherealJayy

    LS swap lost oil pressure

    Here’s a cold start video with an outside temperature of around 66°, no engine noise but gauge shows 15ish psi cold. Whenever it stops raining long enough I’ll get into putting a mechanical gauge on it. What’s the best spot to hook the mechanical gauge? I don’t really want to fight with the...
  20. iamtherealJayy

    LS swap lost oil pressure

    I’ll work on getting that done.
  21. iamtherealJayy

    LS swap lost oil pressure

    How do I know which color I need before disassembly? Engine should be an LM7? 99-02 Silverado/Tahoe 5.3L. I’m hoping the oring will fix my issue since it doesn’t have any engine noises or anything but the pressure is way lower than I’d like. Inside the valve covers looked amazing so I don’t...
  22. iamtherealJayy

    LS swap lost oil pressure

    Is there anything I need to watch out for that could happen while removing it? I’ve never touched an ls engine other than this one. $5 oring is way cheaper than 1200 for another 5.3 off marketplace.
  23. iamtherealJayy

    LS swap lost oil pressure

    Is this something that can be done with engine in the truck? Truck is a 1978 k10.
  24. iamtherealJayy

    LS swap lost oil pressure

    What all goes into replacing that? And anything else to look at while it’s apart?
  25. iamtherealJayy

    LS swap lost oil pressure

    I’ve got a tach, I do not have a mechanical gauge. The tach is inaccurate it reads lower than it’s supposed to. Where’s the easiest place to connect a mechanical gauge? Either way when it’s fully up to temp I do have an issue. It does increase pressure with rpm but it’s maybe the bare minimum...

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