big block

  1. D

    1993 suburban runs rough till warm

    Hello. First post. I apologize for the length of this, but I feel I need to give all details. 1993 c2500 suburban 7.4 TBI 256,000 miles. New engine from NAPA because of bad crank and bearings. Rebuilt transmission. Thing that have been replaced: all sensors on engine and transmission. Most...
  2. ImSoHappy

    PCM to convenience center

    Howdy all I am working on my 1989 k1500 full Holley sniper efi cut out the pcm way back in the day thinking I could wire around it (turns out not a chance ) I have thrown in another pcm got the harness with all the wires cut I have connected everything that only has one wire to match the...
    • ImSoHappy
    • Thread
    • big block holley sniper efi k1500 wiring help
    • Replies: 0
    • Forum: Electronics
  3. B

    632 SS

    Watch here! Hey everyone! We built this beauty and have a few episodes on it. Go watch and let me know what you think. Thanks!
  4. G

    1999 vortec 7.4 rough idle

    I have a 7.4 vortec motor out of a 1999 gmc k2500 suburban and installed it in a 1973 c 10. It’s been running fine for multiple months but recently I have melted multiple rotors in the distributor . I thought I had a ground problem so I ran a ground wire from battery to ignition coil ground...
  5. ralmo94

    Valve spring question

    Hey all, as the title says I have a valve spring question. Having never built a motor myself, I've worked on quite a few, mostly my own, or friends stuff.. I have a 98 l29 454. I have a GM performance parts camshaft for it. I had purchased a set of springs for the cam change, they might be a...
  6. Dale1975

    Square body headers on C1500 454

    Has anyone had any success using square body headers on the GMT400?
    • Dale1975
    • Thread
    • big block exhaust headers squarebody ss454
    • Replies: 7
    • Forum: Exhaust
  7. CBenZ71

    At a loss, Acceleration Shake

    Okay, needing some suggestions or directions to go with my truck. When I take off from a stop, I get a shake that feelings like it is in the driveline(Maybe?) between 5-15 MPH. After passing 15 MPH it goes away and drives fine. It does it when it is cold, hot, doesn't matter. The truck is a...
  8. dAT OBS

    .GEN 6 454 VORTEC!!!!

    Anybody running Gen 6 454 blocks with carb or TBI and not using the gen 6 fuel injection...plan on installing gen 6 454 in at 92 GMC but not running about run carb really want the block for it's factory hydraulic-roller block...it seam to work just use different intake manifold Another...

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