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  1. rumblebox

    My 454 build

    Still on pause Sent from Samsung Galaxy S5 Active
  2. rumblebox

    My 454 build

    On pause Sent from my SAMSUNG-SM-G870A using Tapatalk
  3. rumblebox

    Backfiring through carb and getting worse, even at idle

    Im just installing the cam and lifters from my 74, since im about to rebuild that engine anyway. Sent from my SAMSUNG-SM-G870A using Tapatalk
  4. rumblebox

    Backfiring through carb and getting worse, even at idle

    https://youtu.be/c3Ng6_jJxGg https://youtu.be/DP5v8rWhZ7s Sent from my SAMSUNG-SM-G870A using Tapatalk
  5. rumblebox

    Backfiring through carb and getting worse, even at idle

    So I figured it out immediately after removing a valve cover a couple weeks ago. Someone had over-tightened one of the rockers, and it completely wiped a lobe off the cam. So the exhaust valve opens almost not at all. My first thought was a bent valve causing the lifter to collapse, but the push...
  6. rumblebox

    ECM compatability between years (dead V1500 diagnosis)

    No Sent from my SAMSUNG-SM-G870A using Tapatalk
  7. rumblebox

    ECM compatability between years (dead V1500 diagnosis)

    I'm working on a 91 v1500 suburban, and i need to try another ECM. Can i try one from like a 94 k1500? Theres no power going to the fuel pump, and even with the [new] fuel pump hot-wired, it still only fires if i pour gas down the intake. The SES light would come on sporadically with the key...
  8. rumblebox

    My 454 build

    Definitely balancing it. Sent from my SAMSUNG-SM-G870A using Tapatalk
  9. rumblebox

    My 454 build

    It has annular boosters, so it's supposed to act more like a 750 down low. I'm setting the secondaries to open later also. The cam will be custom and not very radical. Might go hydraulic roller, but the solid roller should make more power everywhere compared to hydraulic, no? Sent from my...
  10. rumblebox

    Backfiring through carb and getting worse, even at idle

    Intake only Sent from my SAMSUNG-SM-G870A using Tapatalk
  11. rumblebox

    Backfiring through carb and getting worse, even at idle

    I retarded it enough to where it wouldn't even idle, and it still did it. It only has 91k miles. I'm gonna pick up a vac gauge this week. I'm also going to disconnect the exhaust in front of the mufflers and see what happens. Sent from my SAMSUNG-SM-G870A using Tapatalk
  12. rumblebox

    Backfiring through carb and getting worse, even at idle

    My 81 with a 454 and smog has started to backfire horribly when I give it any gas at all. Now it even does it idling when the timing is set correctly. This happens regardless if the EFE flap in the manifold is open or closed. The left exhaust pipe is significantly louder than the right one, and...
  13. rumblebox

    Can't find low side AC fitting

    I found that one pretty quickly. I guess the high side is what i was looking for. Do you have a pic of that one? Sent from my SAMSUNG-SM-G870A using Tapatalk
  14. rumblebox

    Can't find low side AC fitting

    I'm doing the R134A conversion and can't find the low side fitting in my 81. Does it even have one? Sent from my SAMSUNG-SM-G870A using Tapatalk
  15. rumblebox

    My 454 build

    Sent from my SAMSUNG-SM-G870A using Tapatalk
  16. rumblebox

    My 454 build

    Definitely go with the ovals if they already installed the big valves. Ovals supposedly have the same low/mid torque as peanuts without falling flat at 5k. I'm probably not even doing any port work on my 781's. Just big valves and done. Sent from my SAMSUNG-SM-G870A using Tapatalk
  17. rumblebox

    My 454 build

    Sent from my SAMSUNG-SM-G870A using Tapatalk
  18. rumblebox

    My 454 build

    Yes. I may forego the headwork and just leave the stock valves in favor of a 4.25 crank. Sent from my SAMSUNG-SM-G870A using Tapatalk
  19. rumblebox

    My 454 build

    Sent from my SAMSUNG-SM-G870A using Tapatalk
  20. rumblebox

    My 454 build

    So the 454 in my '74 knocked forever before recently locking up. I didn't care so much, because i have a complete 454 that originally came out of an early 80's RV. I finally picked up the engine and disassembled it to the shortblock. It had peanut heads, which isn't a big deal since I'm using...
  21. rumblebox

    Show me your 8 lug wheels!

    They changed to a bigger pattern in 2011. Before that, it's all the same. Sent from my SAMSUNG-SM-G870A using Tapatalk
  22. rumblebox

    Show me your 8 lug wheels!

    Yea i do.. Opinions are like vaginas. A lot of people have them, and they stink if not well maintained. Sent from my SAMSUNG-SM-G870A using Tapatalk
  23. rumblebox

    Show me your 8 lug wheels!

    The 07-10 look better, IMO Sent from my SAMSUNG-SM-G870A using Tapatalk
  24. rumblebox

    Show me your 8 lug wheels!

    Sent from my SAMSUNG-SM-G870A using Tapatalk
  25. rumblebox

    Show me your 8 lug wheels!

    Sent from my SAMSUNG-SM-G870A using Tapatalk

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