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  1. K5Rob

    Vacuum lines for hvac system

    Poppy I hooked a vac gauge to this port and am getting 16” at idle. I was assuming its vacuum. It IS tied to the valve cover like a pcv. I dont know how the pcv system on an LS is laid out. Do you?
  2. K5Rob

    Are these modern carburetors a big improvement?

    Yes I do
  3. K5Rob

    Are these modern carburetors a big improvement?

    Im a fan of Edelbrock (AFB) as the fuel level is below the gasket line, they are easy to adjust things like metering rods and springs, and they typically run good right out of the box. That being said my Malibu which is carbureted had the notorious off idle stumble. Turns out it is very lean for...
  4. K5Rob

    LS surging idle throttle blade hole

    Got fuel pressure straightened out with an adjustable regulator. Ditched the jenky corvette regulator. Had the pcm tuned for the mild cam and all is good now, running great.
  5. K5Rob

    K5 Top Removal

    Good idea. Id like to leave the garage out of this. The hoist is already taking up real estate so it would be nice if it worked. I will keep the block and tackle in mind though.
  6. K5Rob

    Vacuum lines for hvac system

    Thank you. I have no transmission modulator or throttle/dist servo as i am running an Ls motor. Just need vacuum to actuate my hvac vents, mainly the defroster. Would my “A” drawing accomplish this?
  7. K5Rob

    K5 Top Removal

    Just have the wife and I. I am hoping the engine hoist can take the brunt of the load and she can just balance it to the ground. Was thinking of rigging some type of cross member for the hoist arm
  8. K5Rob

    K5 Top Removal

    I think ill give it a try and at least lift it an inch or so off the truck and see how it feels
  9. K5Rob

    K5 Top Removal

    87 K5 Blazer. I know there are posts on this but mine here is specific to removing the top using an engine lift. Anyone done this, also approximately how much does the top weigh? Trying to accomplish this with one person behind the lift and one person holding a corner of the top to stabilize...
  10. K5Rob

    Vacuum lines for hvac system

    Ok guys thanks for all the info. So here’s my issue, I have an LS and manifold vacuum sources are limited. I have one that goes to driver side valve cover, drawn in Green. Can I just Wye here, and run my OE lines as shown in Pink? (Drawing A) This option replicates the diagram posted by...
  11. K5Rob

    Vacuum lines for hvac system

    Okay so I need some line and some Tees, Does #4 go thru the firewall and to the dash control panel?
  12. K5Rob

    Vacuum lines for hvac system

    Thanks, yes this is what I have, appears to have only one nipple and one line however. Guess i will have to look closer
  13. K5Rob

    Vacuum lines for hvac system

    Okay I am familiar with that grommet, i had an unknown plug coming out (maybe it was ac) i definitely had a big plug that went to the pcm under the dash (was a tbi truck) which was no longer needed. I do not recall a vacuum line coming from that location. Guess I will have to dig around. Does...
  14. K5Rob

    Vacuum lines for hvac system

    I need to go upstream of this first. Where is the line roughly that comes from engine vacuum?
  15. K5Rob

    Vacuum lines for hvac system

    Hey guys, 87 K5 Blazer, just did an engine swap, I have a functional hvac blower but cant switch settings (defrost etc). Then i recalled I had never hooked up any vacuum lines, and Im not sure if they were hooked up before. Could someone describe where the line/s exit the firewall and where they...
  16. K5Rob

    LS fuel pressure regulation issue

    Thanks for the reply. The trouble with Amazon is they are notorious for knockoff auto parts. You may be buying a Wix but get a cheap knockoff disguised as a Wix. They sort of disguise the seller since everything is bought through the Amazon platform it can be difficult to distinguish if the...
  17. K5Rob

    LS fuel pressure regulation issue

    By the way, i searched oreillys for that microgard filter as i know orilleys sells the microgard name. It is part number 33737. Same part number as wix.
  18. K5Rob

    LS fuel pressure regulation issue

    Great to know. Thats what I was worried of - bad manufacturing as of the last few years. I agree that most these failures seem to be recent. The problem is who makes one that works, and when you need to replace it, which you will, where do you get one? Most of the people who have had failures...
  19. K5Rob

    LS fuel pressure regulation issue

    Yes they are said to bleed down as you describe. And thank you for not hijacking. My issue is they are not regulating anywhere near 58. More like 70, 90, 100. Right out of the box. May i ask what brand you are running?
  20. K5Rob

    LS fuel pressure regulation issue

    Here is a link to one of many https://www.corvetteforum.com/forums/c5-tech/4944739-wix-filter-regulator.html Most others you will find on any site under the reviews, such as amazon, summit etc
  21. K5Rob

    LS fuel pressure regulation issue

    Same as in vette regulator? What brand are you using?
  22. K5Rob

    LS fuel pressure regulation issue

    Hey guys I have been battling high fuel pressure using the corvette style filter/regulator on my 5.3 swap which has a returnless truck intake. Fuel pump is from a late 90s Vortec 350 which fit my TBI sending unit perfectly, p/n P240KC, which cross references with EP381. I am chalking this up to...
  23. K5Rob

    LS surging idle throttle blade hole

    Both valve covers have a line that goes to the intake. Used the top intake port. Getting 16” of vacuum at idle, when its idling smooth. I am getting 90 psi of fuel pressure with key on, not running, and 100 psi when running at idle. The gauge only goes to 100. I am running a Wix brand...
  24. K5Rob

    LS surging idle throttle blade hole

    However, would vacuum leak not cause a HIGH idle? Mine is low to the point of stalling (which it does) I would still like to check. I dont want to spray carb cleaner all over the place. I have an appt with a tuner ($350 - ouch, way more than I would like to spend) but would like to check as...
  25. K5Rob

    LS surging idle throttle blade hole

    I have not, Would anyone know where the port on an LM7 is that I can hook a vacuum gauge to?

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