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  1. S

    Meet my Suburban

    That's one awesome Suburban!
  2. S

    1981 Silverado

    Nice ride!
  3. S

    Heater and AC Vacuum Schematics

    There is one under the cowl vent too. It controls the outside air.
  4. S

    Damaged Mystery Component

    That is GM part #1997479. Its available from this guy. https://www.ebay.com/itm/326166939571
  5. S

    Holley Retrobright radio interference solutions?

    Bought a selection of cores- still waiting for a few. BUT after I clipped just one of these on a looped section of drivers side harness the radio worked- will post pics once I have it licked
  6. S

    Holley Retrobright radio interference solutions?

    Thanks @WebMonkey I figured there'd be some amateur radio folks on this forum :)
  7. S

    Holley Retrobright radio interference solutions?

    @Turbo4whl , don't have a ground strap on the hood but ohm meter between hood and firewall shows good connectivity- same with radiator support. @bucket , When I talked to the Morimoto guy he said the loop was the only way to get rid of it. Oddly, my prior LEDs had no RFI
  8. S

    Brought home my first square body. 1980 Silverado C10. Utah

    to put it another way, rust is just natures way of telling you, its time to learn how to weld :)
  9. S

    Brought home my first square body. 1980 Silverado C10. Utah

    ooh it doesn't even look too rusty :)
  10. S

    Holley Retrobright radio interference solutions?

    So I bit the bullet and put the LED headlights in- and they are great! BUT they also totally kill the FM radio. Tried just sticking these ferrite cores (https://www.amazon.com/dp/B08DC9JF5K/) on the leads, but no joy. Called Morrimoto who makes Retrobrights for Holley and they said I need to...
  11. S

    NEW Brothers Dash Bezels - CHEAP

    @Bennyt - great tip on Holley clearance! Just got a couple 4 button window switches for 5.57 each! https://www.holley.com/products/deals/clearance_parts/parts/09-106
  12. S

    NEW Brothers Dash Bezels - CHEAP

    Awesome link! - Just ordered 1983 with A/C for $62
  13. S

    Help with grinding/whirring sound!

    A bad rear pinon bearing could have the same behavior
  14. S

    Accel Plug wires too short

    @Ricko1966 thanks much! I'll guess I'll just get the 4049 set
  15. S

    Accel Plug wires too short

    I got ACCEL 4048 Spark Plug Wires I thought fit my 83 K20 Suburban 350 LT9 (wires route underneath the exhaust manifold), but no matter how I route the wires a couple of the wires are super short and too tight to the exhaust so expect they are wrong for my application. Frustrating as it runs...
  16. S

    Finding smog pump 1985 Chevy K20

    I got mine on ebay- see https://www.ebay.com/sch/i.html?_from=R40&_nkw=smog+pump&_sacat=0&rt=nc&Brand=GM&_dcat=33610
  17. S

    Vacuum Spark Control

    This is the 4 port one I have:https://www.stockwiseauto.com/standard-motor-products-dsv11-vacuum-delay-valve and this search show all of the Standard Motor ones so it might be useful to track down exactly the one you need: https://www.stockwiseauto.com/advanced_search_result?keywords=DSV
  18. S

    Vacuum Spark Control

    @Kilian, You found one? Post a link to the pic or listing. Only 4 port one I've seen was not the same (https://www.ebay.com/itm/266395991602#:~:text=New GM 14075612 Spark Control Valve 1985-86 C/K Truck?msockid=2ff10e6c85be68fe046e1b7c84ac69b8)
  19. S

    Headlight mounts

    Yup- the headlight buckets are held by one spring and two adjusters. the plastic bit is this: https://www.clipsandfasteners.com/Headlight-Adjusting-Nut-GM-p/a11718.htm
  20. S

    Vacuum Spark Control

    4 Port Check Valve looks like this:
  21. S

    Vacuum Spark Control

    Delay valve looks like DSV 19 https://buyanycarparts.com/products/spark-delay-valve-dsv19-for-chevy-vehicles-p-n-p180443.html
  22. S

    Vacuum Spark Control

    Unless you are trying to restore to stock or pass emission, you can just run the vacuum from carb and it will work.
  23. S

    Vacuum Spark Control

    Hard to say w/o looking up the part numbers in the GM parts book. The check valve is 4 port, I've not been able to locate one on the interwebs. Delay valve might be available
  24. S

    Vacuum Spark Control

    Not exactly one size fits all, but they should be similar enough for any 350's in that year (except California).
  25. S

    Vacuum Spark Control

    All TVS are coolant controlled. I think there are 2 on the 1983 M engine, one 2 port and one 4 port. You are asking about the two port circled only controls the distributor vacuum advance - dashed line goes to the lower port on the TVS and part of check valve nearest carb which is notionally...

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