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  1. fast_n_low86

    TH400 SWAP HELP

    So it's on a rwd 1986 c1500 gmc, running with 3.42 gears in my rear-end with limited slip.
  2. fast_n_low86

    TH400 SWAP HELP

    Will send pics of the metal tag and what not shortly
  3. fast_n_low86

    TH400 SWAP HELP

    Ok, so I just recently put a 7.4L in my truck and withing the same day cooked the 700r4 I was running behind it (knew it was going to happen). I just went and picked up a th400 to replace the pile of s#!* 700r4. I've never had one in this truck and it's a 1976 rv th400 behind a 1975 454. What...
  4. fast_n_low86

    Small block to big block swap. What do i need to know?

    750 it is
  5. fast_n_low86

    Small block to big block swap. What do i need to know?

    That's all good. It's empty anyways. Took the a/c out as soon as I bought the truck
  6. fast_n_low86

    Small block to big block swap. What do i need to know?

    I'm already running a 600cfm edlebrock performer. Bigger yet?
  7. fast_n_low86

    Small block to big block swap. What do i need to know?

    Hello everyone. The time has come for me to upgrade from a small block 350 to a BIG block 454. This is my first big block and swap and I think I'm kinda jumping into the deep end with this. What are some things I need to know for the swap. I am putting this into my '86 Sierra Classic 1500...
  8. fast_n_low86

    HHHEEEEELLLLLLLPPPPPPP!!!!!! Update- problem unsolved again.

    Thanks for the heads up. It did the same and I've now taken it back off
  9. fast_n_low86

    HHHEEEEELLLLLLLPPPPPPP!!!!!! Update- problem unsolved again.

    I pretty much did before and that started the whole issue. But I'll give it a shot
  10. fast_n_low86

    HHHEEEEELLLLLLLPPPPPPP!!!!!! Update- problem unsolved again.

    I am running all steal braided 6an fuel line from the carb to regulator, to pump to tank selector cluster.
  11. fast_n_low86

    HHHEEEEELLLLLLLPPPPPPP!!!!!! Update- problem unsolved again.

    Fuel pump is an inline pump made for carbureted Engine. I have it mounted down on the frame underneath just before the tank selector cluster, sits about level with the bottom of the fuel tank.
  12. fast_n_low86

    HHHEEEEELLLLLLLPPPPPPP!!!!!! Update- problem unsolved again.

    I've gone over all of those. I'm wondering if I should remove the return line from the regulator and deadhead it so it keeps the fuel up by the motor instead of sending it back to the tank
  13. fast_n_low86

    HHHEEEEELLLLLLLPPPPPPP!!!!!! Update- problem unsolved again.

    The problem has come back and I'm not sure what to go to now.
  14. fast_n_low86

    HHHEEEEELLLLLLLPPPPPPP!!!!!! Update- problem unsolved again.

  15. fast_n_low86

    HHHEEEEELLLLLLLPPPPPPP!!!!!! Update- problem unsolved again.

    Well after all the heartache and ******** for 2 weeks. I finally realized that my fuel pressure regulator wasn't working right and I solved the issue. It was not hooked up to the correct vacuum line. So when I finally would hit highway speed my vacuum would drop right off and thus closing the...
  16. fast_n_low86

    HHHEEEEELLLLLLLPPPPPPP!!!!!! Update- problem unsolved again.

    I'll snap a few pictures here in an hour or so when I go out to start working on er again. Everything ran good and strong and fast until I had to change out my distributor and adjust my timing and what not.
  17. fast_n_low86

    HHHEEEEELLLLLLLPPPPPPP!!!!!! Update- problem unsolved again.

    I have switched back and forth between the 2 filters and besides the lack of power with the round one due to starving for air there is no change to the problem.
  18. fast_n_low86

    HHHEEEEELLLLLLLPPPPPPP!!!!!! Update- problem unsolved again.

    That's the old one I took off. I will take a picture here when I finally go out and start wrenching on er some more. It's one of those triangular all open filters.
  19. fast_n_low86

    HHHEEEEELLLLLLLPPPPPPP!!!!!! Update- problem unsolved again.

    Revs good. Hold the rpms at 2500+, still good. Only thing is I changed my airfilter to an open top filter. Had to change my distributor because the old ones shaft was bent (inset dick joke here). So it would skip out of time while driving. Should've remembered that's why I changed it out...
  20. fast_n_low86

    HHHEEEEELLLLLLLPPPPPPP!!!!!! Update- problem unsolved again.

    I installed a wideband fuel/air mixture guage in my truck a while ago so I could monitor it. It runs great until I hit highway speeds and then she spikes right out of range to the point my truck stalls out or it will flutter in-between to lean and just able to run, then I lose all speed and it...
  21. fast_n_low86

    HHHEEEEELLLLLLLPPPPPPP!!!!!! Update- problem unsolved again.

    Ok, so I'm having a major issue right now and I'm out of ideas on how to fix this. Truck has ran great with my new (to me) motor transmission until I had to swap my mild performance to full out performance distributor. I adjusted the carb and timing once I made the swap, it ran good for a few...
  22. fast_n_low86

    700r4 swap.

    Ok, since my motor grenaded on me I am installing a stock 350 and 700r4. I have a few questions about doing the 700r4 swap. Mainly what will I need to change when installing this. I'm going from a th350 to the th700r4. The transmission and motor are out of a early 90s chevy which I am...
  23. fast_n_low86

    Calibrating speedometer.

    Yeah. I can only imagine
  24. fast_n_low86

    Looking for recomendations for transmission change

    Hey all. I am currently running my truck with a th350c, modified 5.7L 350, and 3.42 ratio gm 8.5" rear end. Kept motor carbureted and don't want to start messing with all this new electronic crap when replacing my Trans in my street machine. I have been thinking about going with a th700r4 but...
  25. fast_n_low86

    Calibrating speedometer.

    Yes. That is the one. I've never done any work in a transmission before so I'm not sure how to go about that or anything

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