454

  1. jkirk1992

    Stock Gen V 454 upgrades?

    Hi there all! Looking for some advice here. I’ve got a 92 K2500 with a 454, bone stock pickup. I’m interested in getting just a little bit more power out of that boat anchor under the hood without completely killing my wallet. For now I’d like to get a slightly more aggressive cam within the...
  2. Papablunt

    1999 K2500 Suburban 7.4L

    I bought this Suburban from my Dad a couple years back (Nov '19), and I'm finally getting around to showing it some love. My pops lives in NC and I'm in CO, so we met 'half-way' in Omaha, NE to exchange. It was a wild ride heading back home between the heavy winds and sloppy rag joint, but it...
  3. virginiaguy76

    1990 K3500 work in progress

    Off the showroom floor. 1990 K3500 Silverado, 7.4, TH400. Finally at home, but the transmission, oil and water temps were just too high.
  4. O

    LOUD rattle when engine starts

    Hello, I’ve came here as a last resort because I’ve tried everything I originally planned on doing plug wires, spark plugs, and a cap and rotor as regular maintenance All was well until I went to fire it up again. And it makes a horribly loud rattle It doesn’t do it when the starters...
  5. D

    Dual 3" exhaust?

    Hey all, I'm new to the forums here. I have a 1998 K2500 with the 7.4L and 4L80e. Currently all it has is a CAI, true dual cat-back 2 1/4" straight pipes, and a custom 93 octane tune that was live-tuned using HPtuners. The exhaust is raspy as can be and I'm about tired of it (it was like that...
    • Drewu223
    • Thread
    • 454 dual exhaust exhaust l29 7.4l vortec 454
    • Replies: 54
    • Forum: Exhaust
  6. Silverlander

    98 K3500 454 California Compliant rebuild

    Finalizing the purchase of a '98 Crew Cab Silverado 4x4 with an 8' bed and a hideous ALL blue interior. It has just shy of 200k miles and she is quite tired. I heard a knock/ping in cyl 1 when I inspected/test drove it while it also came back with a CEL for bank1 running rich. I'm purchasing for...
  7. T

    2000 L29 454 Build

    This is my first post here. The Truck this motor will be going into is my 1998 Chevy K3500 Crew Cab Dually with 140k miles. The 454 that's in it is full of sludge and the oil and oil filter always has metal flakes in it. I've been driving it like this for 7 years, the metal in the oil is...
  8. PedroC

    Volvo Penta intake 454 gen6 build

    Im building this stock low mileage gen6 for my 78 crew cab dully, but I think this setup might be perfect for my 95 extended cab Dulley. What do you guys think?
  9. J

    Random shutdown/IAC goofiness

    Howdy fellers. I'm about to drag up a very tired subject, so be prepared ;) My K2500 (1995, TBI, 7.4) Has been giving me some very frustrating issues as of late. Seemingly without warning, it'll shut itself off. Can happen at an idle, or when I'm coasting to a stop, or even under light...
  10. scons96

    96-00 454 Running Rough

    I have a 1999 K2500 with the L29 454. I replaced the 34 gal. fuel tank, fuel lines, upper intake manifold gaskets, and the cap and rotor in the truck. I also replaced the small vacuum line going to the fuel pressure regulator as it was dried out and brittle, and I replaced the PCV hose. Before...
  11. scons96

    96-00 L29 454 Headers

    Hello folks, I've got a '99 K2500 with the 454 and I want to put some long-tube headers on it. I've seen sets on Summit and Jegs that say they are direct fit for my truck, but then they say they are only for up to '95. If anybody has any ideas, maybe a part number, that would be awseome. Thanks...
  12. dAT OBS

    Info on tbi 350 swap to tbi 454???

    Getting ready to replace the good 1992 350 with a good 1990 454...I have couple questions Are the serpentine accessories brackets the same size Any wiring difference I know I need 454 exhaust manifold but is the OEM y-pipe different sizes Any more differences???
  13. KaidenP2

    95 C1500 bench to 99 Suburban 60/40 power help

    Hi guys! I have a 95 c1500 rcsb with the manual bench seat (Absolutely sucks!) Anyway... I have a whole suburban here and I have all the bolts and what not lined up for it. It's 6 way I believe with no lumbar support driver side is 60 portion. My question is in terms of getting the power to...
  14. 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...
  15. Jordan Goldenberg

    1989 k3500 rarity?

    Hows it going. I’m looking for opinions from people that know this era of truck very well. I have a 1989 GMC Sierra sle k3500 190xxxmiles. Power windows and locks. Tbi 454 Fourth gen I think. It’s not an SS. That package was only offered on c/k1500s I think. It’s got 1 ton rear (ifs). Muncie...
  16. Sunbelt56

    Slight surging between 65 & 70 mph - overdrive shifting in and out?

    I get up to 65mph on the highway and try to slightly accelerate and between 65 & 70 mph I feel the truck surging like it's going in and out of overdrive. The transmission fluid was recently changed and it did the same thing before. It seems to be fine when it gets over 70mph. I can get it up to...
  17. Manmeyco

    1997 K2500 454 Rough Idle, Loud Afterfire

    I have a '97 K2500 with the 454. Simply put, it doesn't idle right. When I start it up cold, it revs up to 2000 RPM, slowly settles to idle, and then either abruptly dies or practically dies before roaring right back up and going through it again. In order to keep it on I hold the gas slightly...
  18. CarolinaChevyDad

    Help! My 7.4 idles low and stalls in neutral - manual trans

    Its a 99 K3500 with the factory NV4500 trans (4x4 obviously) that I just bought a week ago. It drove great the first 600 miles and towed my car home on a trailer from a few states away where I bought it. Just this weekend, it started dropping to 350-500rpm when I would push in the clutch or put...
  19. L

    454 TBI Problems

    I have a 1993 k3500 454 NV4500... The engine is a semi fresh rebuild(50K miles) with a small cam. I have replaced the following some parts multiple times... The truck has a stumbling rough idle. Seems to lack power to me but im not sure. If i take the truck for a short drive when i come back and...

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