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  1. AuroraGirl

    Backfiring through carb/won’t idle/runs well at higher rpm (new GM crate SP350 w/new Holley 4150). Pls help!

    Ive found(not this situation) forgetting to put throttle springs on can mimic it for a short while lol
  2. AuroraGirl

    Backfiring through carb/won’t idle/runs well at higher rpm (new GM crate SP350 w/new Holley 4150). Pls help!

    I see you have a PCV. one of those is supposed to be the oil fill, probably the one on your passenger cover with the push in filter thingy That needs to be a cap, not a breather. Consider a late 60s corvette oil cap Youre also using a fuel line for the PCV, that is not the correct hose but it...
  3. AuroraGirl

    Backfiring through carb/won’t idle/runs well at higher rpm (new GM crate SP350 w/new Holley 4150). Pls help!

    your PCV is done wrong You have no PCV valve and 2 breathers, your engine is going to live a short life if you dont flip a valve cover (either of them) and put a PCV valve in
  4. AuroraGirl

    Is this vapor locking, bad pump, or something else?

    the switch on the dash will have to be changed too, so expect that its all gotta go, atm, just switch it to the right tank and leave there, then run some new Fuel hose that Meets SAE J30R14T1. This is ultra low permeation fuel hose, I recommend it since youre gonna be running things youd like...
  5. AuroraGirl

    Is this vapor locking, bad pump, or something else?

    can you show me the selector valve, is it 3 port? You need to get a 6 port valve and a new switch and wiring. research the topic in search if you want to do it. alternatively it can be done with 2 3 port valves like you have most likely but its complex and prone to issues but it would be...
  6. AuroraGirl

    Is this vapor locking, bad pump, or something else?

    WHAT IN THE TARNATION?! Did they think they would fill both tanks equally, tie the feed together, and then return the fuel and vapor to one tank and piggyback it over???!!! You need to remove the plumbing to one tank for now, then in the future you can put a pollack valve in to motarize the...
  7. AuroraGirl

    Ignition cylinder

    you appear to have the 1978 design(possibly?)
  8. AuroraGirl

    Is this vapor locking, bad pump, or something else?

    Pretty sure your pump looks fine. its got a return line now you need to confirm the return lines run to the tanks in some fashion, so if your switching valve works, is yours a solenoid (which would require 2 of them to handle this) or motorized? also the kinked metal hardline to the carb, thats...
  9. AuroraGirl

    Is this vapor locking, bad pump, or something else?

    thats a 78? you have sealed gas caps(DO NOT USE TILL WE DETERMINE MORE) if your gas tanks are 1978 original they may not have return lines and there may have been the intent for you to have a vent line filter on the tank and then a unsealed gas cap with a vent' Ignore the ghetto nature of...
  10. AuroraGirl

    Ignition cylinder

  11. AuroraGirl

    Ignition cylinder

    my 1978 tilt column wouldnt work on my 1980 gmc without tilt, but i suspect without tilt would have The LMC catalog calls out 1978 as a special year in cylinders for multiple reasons 1973-1991 for no tilt columns
  12. AuroraGirl

    Is this vapor locking, bad pump, or something else?

    the fuel pump is drawing a vacuum on the fuel line from the tank, and its pushing the fuel through the filters to the carb. if the one in the carb is there ,its possibily contributing to it because a harder time to push through would mean resistance and i feel maybe that could lead to increased...
  13. AuroraGirl

    Ignition cylinder

  14. AuroraGirl

    Ignition cylinder

    IIRC You need to either push the tab keeper in place or you need to somethign to get it engaged Mine did Yes you should get my part number, idk what difference but i know it works with the EXACT same column as yours, is why i say that this is my experience, if i can recall right
  15. AuroraGirl

    Ignition cylinder

    @bucket @HotRodPC do you guys know why the amazon associate disclaimer showed up under my post above? I only linked an amazon store link, I actually deleted the referrel portion of the link
  16. AuroraGirl

    Ignition cylinder

    Standard Motor Products Motor Products, Inc. - Lock Cyl (US-117LT) you are using US-107L
  17. AuroraGirl

    Oil pressure sender stuck.

    true, i didnt think of that, but as far as op was asking he seems dead set on removing things he doesnt need but that is the best option in my opinion
  18. AuroraGirl

    Ignition cylinder

    https://www.amazon.com/dp/B004BTOHDM/ this is what i used in my 1980 GMC K25 with manual transmission, non tilt column It works great, i accidently broke the wings because i either used too much torque (may have needed to lube something and it was cold cold), i didnt use the lever on the colulm...
  19. AuroraGirl

    Ignition cylinder

    Tilt vs non tilt is different too
  20. AuroraGirl

    Is this vapor locking, bad pump, or something else?

    is there two filters in this fuel circuit? The carb has a filter in the inlet.. check for it. if so, the one there is not serving a purpose. But a picture of your current fuel pump would be helpful. And whats your gas cap like
  21. AuroraGirl

    Rear diff vent tube

    GM says you can use a fuel filter oddly enough, 25055032 VENTING REAR AXLE ASSEMBLY 1.Disconnect rear axle vent hose and vent at attachment to box floor cross sill or frame and axle housing. Typical attachments are shown in Figures No. 1A and 1B. Various other att achments are possible...
  22. AuroraGirl

    What defined the shape of a SM465 shifter? The rod part

  23. AuroraGirl

    1987 suburban tbi 350 overheating.

    22073412 1987-88 M Van with 4.3L, with A/C without GT4 22073403 1988 C/K with 4.3L with GU2/GU4/GU6 and KC4/VO1/VO2/A/C 5.7L with GU4/GU6 and KC4/VO1/VO2/A/C 1987-88 G Van with 4.3L, 5.OL, 5.7L (Vin Code K) with heavy duty cooling and without GT4 22068662 1988 C/K with 5.OL with GU2/GU4/GU6...
  24. AuroraGirl

    Oil pressure sender stuck.

    LOW OIL PRESSURE READING INCORRECT OIL PRESS. SENDER MODELS: 1987 R/V, G, P AND 1988 C/K WITH LB4 (VIN CODE Z), L03 (VIN CODE H), L05 (VIN CODE K), L19 (VIN CODE N) TBI ENGINES Some 1987 R/V, G, P and 1988 C/K models with 4.3L, 5.0L, 5.7L and 7.4L engines with throttle body injection may have...
  25. AuroraGirl

    Oil pressure sender stuck.

    if these guys are right then yours is in the right spot, the switch is by the distributor. if you dont care about the redundant benefit of the switch you can safely replace it.

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