5.7

  1. Kris_96_57_350

    1996 K2500 8-Lug 6” Lift / 2-Piece Driveshaft Question

    1996 K2500 8-Lug 6” Lift / 2-Piece Driveshaft Question. I have a 1996 Chevy K2500 4x4, 8-lug, automatic, extended cab long bed with the 2-piece rear driveshaft and carrier bearing. I’m trying to figure out the best 6” lift option. I was originally looking at the Tuff Country 16822KN 6” kit...
  2. V

    1994 k1500 “value”?

    Recently picked up a 2 owner 94 k1500 with 37k original miles verified by carfax as well as the dmv. It was a desert truck that sat for 9 years after the most recent owner (uncle of a close friend) passed. I’ve replaced all four ball joints, tires, power steering lines, ac dryer, radiator hoses...
  3. Breadwinner73

    91 5.7 tbi stove heat pipe size

    Does anyone know what is the correct size is for my truck's TherMac system? FB Groups yielded no help, just a bunch of smart A$$ people. I'm not going outside when it's 15F and 40+ mph -18 wind gusts. I know i can buy it new locally, but $20+? hard no thanks.
  4. O

    1997 5.7 vortec cam recommendations

    I have a 97 k1509 with the 5.7 vortec. Its a single cab short bed on 33s and has a posi rear differential. Only thing done to the motor is a Volant cold air intake and a black bear tune. Im planning on camming it with the summit 8802 and matching .550 beehive springs keeping the stock 1.5...
  5. Kris_96_57_350

    new injectors for 5.7 Vortec 96

    I was wondering if these injectors would work in my 5.7 vortec 350 I’ve replaced my fuel pump, battery, alternator, spark plug and spark plug lines and I still have to give it gas to start it sometimes so its gotta be my injectors since its not my starter since sometimes it turns on immediately...
  6. D

    Rough cold start, missfire and low idle 1995 gmt400 5.7 tbi

    New computer, New dizzy, cap, rotor, wires, plugs, coil, map sensor, egr, and all vacuum hoses replaced, fuel pressure stays above 12psi when running... new fuel filter, injectors, coolant temp sensor and sender all grounds replaced and upgraded. New battery New alternator, rebuilt the fuel...
  7. J

    What’s my best option

    So I just picked up a 1988 C1500 with the 5.7L TBI in it and I was wondering what everyone thinks is smarter time and money wise for making some more power nothing to crazy just some to have fun. I’m not the most educated so any information/tips help. Should I work with what I have if so what’s...
  8. J

    Loss of voltage while driving.

    I’m looking at buying a 98 k2500, owner states the power draws while running only, not when parked. I’m worried that he wouldn’t be selling it if it was as easy of a fix like an alternator or a bad connection. Thoughts?
  9. suburusssuck

    Not a newbie VSS problem

    98 4wd k1500 L31 4l60e. First thanks to the ones taking time to help you guys are funny as hell. You know who you are. I have the shop manuals, i have tech2win, All fuses are closed, relays are good. I replaced a faulty ignition switch so the switch is brand new and functioning correctly. I...
  10. hilly101111111

    Cooling/Radiator/Over Pressure

    My truck is a 1990 GMC k2500 with a TBI 350 I have a few questions for you guys. Long story short I replaced my radiator for the 3rd time because it's a cheap Chinese one and I can get them for free under warranty. The Pressure blew out the cheap plastic drain plug. Anyway I also replaced my...
  11. 9

    92 K2500 engine cutting out when warm

    So I have a 1992 Cheverolet C/K 2500, CK as in a C frame with a K body sitting on top. 2WD frame and a 4WD Body. Motor is a brand new 5.7 small block crate engine with roughly 3-4k miles, Paired to a turbo 350. I'm currently having an issue where when the truck gets up the temperature while...
  12. S

    HEI wiring, electronic choke wiring and carb linkage for an edelbrock

    Hey everyone, finishing up the carb swap on my 88 C1500 and I’ve been reading a lot on this forum. From what I’ve read there seems to be a lot of talk over an electronic fuel pump, I don’t believe the 88 model had an electric fuel pump isn’t it manual? Correct me if I’m wrong What would be...
  13. S

    How to connect accessory bracket support arms to an aluminum performance intake manifold on a 88 C1500?

    Hey everyone I’m converting my 88 C1500 350 to use a carb, I’m kinda in a pickle right now, non of my accessory bracket support arms connect to my new dual plane intake. The AC compressor arm nor the belt tensioner arm match up to the intake. One time when I took my truck apart I decided not...
  14. S

    Intake manifold bolt not fitting

    Installed a new intake for a carb conversion, one of the bolts won’t fit around this raised area, tried using the original intake manifold bolt didn’t fit went out to the hardware store and got a bolt with a smaller head and it still won’t fit, is the only solution to this problem shaving down...
  15. S

    88 C1500 5.7 correct torque sequence for cylinder heads?

    Hey everyone, does anybody know the correct torque specs/sequence for the TBI heads on a 350? Is it the same for every 350 or is it different with the TBI heads? Sorry for the silly question just want to make sure I do this head job right. Thanks!
  16. S

    Intake, distributor and carb recommendations for 5.7 TBI heads?

    Haven’t posted here for a while hope everyone is doing well. I’ve got a tbi 350 in my 88 C1500 and I'm planning on switching over to a carb setup. I’m well aware that TBI heads are inferior to vortec heads but let me explain why I’m keeping them. My truck has been running way rich for a...
  17. 9

    92 Suburban acceleration issue

    I have a 92 chevy suburban. 401,000kms. One owner before me (old couple) that always did regular maintenance. Ran great and had tons of power up until a couple weeks ago when it randomly stalled twice in town....never thought much of it until one day a few weeks later it started chugging up...
  18. KCusick81

    EVO sensor problem?

    Hello all, I'll start by saying I'm not sure if this is the right section for this question, so I apologize ahead of time if not. I bought a 97 K1500 a few years ago. Ever since I got the truck there has been a slight steering jump when going around long radius turns. It doesn't happen on...
    • KCusick81
    • Thread
    • 5.7 diagnostics evo help k1500 sensors steering
    • Replies: 29
    • Forum: Electronics
  19. J

    Best deep muffler for 5.7

    Looking for mufflers on a 5.7 that are deep and have little to no (preferably no) drone. I saw Thrush Welded chambered, Flowmaster 40 (but I hear they have a droning problem). Is there a good option fitting my list?
    • joog
    • Thread
    • 5.7 exhaust muffler mufflers
    • Replies: 121
    • Forum: Exhaust
  20. J

    1998 k2500 5.7 head gasket worry

    I found a 98 k2500 for sale and the previous owner put head gaskets on it just a few weeks ago, and I’m worried he’s just trying to do some cheeky patchwork to sell it. I heard these vortec heads are prone to cracking. I really love the truck and want to purchase it but I don’t want to have a...
  21. dasburb

    1997 K1500 5.7 suburban exhaust compatibility

    Hi everyone, I have a 1997 Suburban which has a vortec 5.7 and a style of exhaust which has two pipes that are separate leading into the muffler. It looks like the picture below What I'm wondering is if a slightly newer exhaust system from a 99' would be intercompatible AND allow for me to...
    • dasburb
    • Thread
    • 1997 4x4 5.7 5.7 vortec california compatibility emissions exhaust k1500 oxygen sensor
    • Replies: 20
    • Forum: Exhaust
  22. C

    Trans Swap

    TLDR I have a 95 K2500 350 Suburban and a 94 k2500 454 suburban, both are 4l80e's. The 94 tranny (no 4th gear) is bad along with the torque convertor I believe, and the frame of the 95 is bad. Can I straight swap the tranny from the 95 to 94? if so can I swap the T-case, and Torque convertor as...
  23. D

    New MPFI Spider Injection caused Engine Seizing????

    Hey ya'll, I have a '98 K1500 with a 5.7 Vortec (vin code R). The truck has 230k on it, so i decided I would do the MPFI upgrade. I figured it had the original CFI in it. Well, I took it apart and discovered it already had an FJ504 (O'Reilly's) injector in it. Being as I had a brand new one...
  24. richardj23

    98 5.7 k2500 timing

    i have a 1998 k2500 with a 5.7 in it, i just put another 5.7 in it out of a 97. The truck runs amazing at idle but when i put it in gear its fine then when i drive it starts backfiring. I have moved the distributer back and fourth moved teeth back and fourth i just cant figure it out. On top of...
  25. S

    What is proper power steering pump bleeding procedure? Nothing seems to work!

    Just replaced my leaking pump, pulley, and high pressure line on my 88 C1500. I jacked the front wheels off the ground filled the PS pump up to the cold full line and with the engine OFF turned the wheel side to side bump to bump probably 200 times, I refilled the fluid occasionally but it...

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