350

  1. S

    Serpentine belt thrown twice on a 1988 C1500 5.7 350 Silverado

    I replaced my belt about 2 years ago after a smog pump delete. I never had any problems with it and never noticed any out of the ordinary wear and tear, a couple days ago after driving through a rain storm and going through several giant puddles that made my truck look like a boat I noticed my...
  2. S

    Slightly lower oil pressure, worn bearings or kooky sensor? (After cam swap) C1500 5.7 1988

    Hi everyone I did a cam swap this spring, went from my stock cam to a comp CL122494. Just slightly larger then my stock cam. Everything has been behaving after driving about 1500 miles. I have noticed, and did notice a slight decrease in oil pressure many months ago and the “problem” still...
  3. S

    Good ready to install vortec heads?+cam recommendation

    Hey everyone, the summit 151124 vortec heads I originally wanted have been out of stock for some time now, says they’ll be back in stock in august and I don’t plan on waiting that long to do my head and intake swap. Does anyone have any recommendations for ready to bolt on vortec heads already...
  4. S

    1988 C1500 350 carb size? Two PCV valves?

    Hello again everyone, I’ve installed a pretty mild cam (CL12-249-4), I’m very happy with the power gains. I plan on running some vortec heads with Z28 springs, I also have short tube headers, and I have a duel plane intake I’ll install when I get the vortex heads. My question is, what size and...
  5. S

    Engine and car shakes bad/ misfires on the road after cam swap (CL-12-249-4) 1988 Chevy C1500 aTBI 350

    Hey everyone, I’ve made a couple posts here about my cam swap I did on my truck. Well I finally got it idling 950 rpm in park with a rough idle, 550 in gear when the truck is hardly in motion and 1000 when the truck is moving very fast down the road with my foot off the gas. Timing is set at...
  6. S

    Crank no start 1988 Chevy C1500 5.7 350 tbi

    Truck was running fine after the cam swap it idled smooth and revved smooth, everything was working properly and I didn’t wipe the cam, it was lacking power on the road that I now know was a incorrectly set transmission cable and never setting proper advance timing. I decided to try and...
  7. S

    TBI issues

    Hey yall I lost the flat white plastic washer on the male end of my fuel return line adapter that screws into the tbi housing, when I re assembled everything my truck ran fine but I noticed a drip on the passenger side fuel pod, it still sprayed but was dripping. Figured id try and fix it and...
  8. CrystaledJazz

    NP241 Strength?

    I have a np241 out of an 89 GMC. I'm wondering how strong it is for what abuse I'm going to use it for. The truck has a 350 that I plan on putting a cam, heads, headers, and intake on, so I'm hoping for around 350-400 crank horsepower or maybe even more. I know I'm going to have to build the...
    • CrystaledJazz
    • Thread
    • 350 700r4 breaking things horsepower np241 strength transfer case upgrades
    • Replies: 3
    • Forum: Transmissions
  9. S

    1988 5.7 hardly drives after CL122494 comp cams install

    Hello everyone im new here so please forgive me for any rules I break or mistakes I make. Im so glad I found this sight because I am at an absolute loss right now. I want to turn my daily driver/work truck into a old school hot rod. I have alot of plans for this 88 single cab c1500 but a...
  10. nhelmar19

    92 k1500 5.7 4x4 Climate controls not working

    Got a little bit of an obscure one for you guys, I recently purchased a 92 k1500 5.7 4x4 and the truck didn't come with a climate control unit. I went on eBay and bought a unit with the "RECIRC" and A/C button (its an ac truck so i assumed that much) got that unit installed then powered it on...
  11. NW4x4Chevy98

    Replacing Blown Motor, 5.7... suggestions?

    Thought a lot about the LS swap. But I really want the truck back on the road. I'm looking hard at crate motors and wondering if anyone has a suggestion on exactly what I can put in my 98 1500 that will replace my 5.7 without too much hassle. I can do the wrenching, but I am not a mechanic nor...
  12. C

    Wiring issue with Dakota digital cluster

    I have this dash cluster that I bought and I’m having issues finding the wiring diagram for the dash cluster for my truck so I can install this one. I have a 20 pin pigtail on my truck and need advice with doing this swap. There is multiple of the same colors and just need help getting a wiring...
    • cox41104
    • Thread
    • 350 700r4 c1500 cluster swap digital cluster need diagram need help
    • Replies: 4
    • Forum: The Garage
  13. mint88

    Mystery Wires 5.7 350

    I own a 1988 C1500 that originally had a 305, but I swapped it to the 350 and have a couple mystery wires. Any guesses? More pictures will be in the comments. Having a hard time uploading other pictures, so here is a link. Thanks!
  14. mint88

    1988 C1500 5.7

    She has been my baby. I'm only 19, so I still have quite a bit to learn. This truck was a college gift from my grandparents, and it has probably been one of the greatest things in my life. This truck has had quite a few interesting experiences. Anywhere from mid-highway control arm swap, all the...
    • mint88
    • Thread
    • 1988 1988 c1500 lwb 2wd 5.7l 350 5.7 c1500 tbi
    • Replies: 11
    • Forum: Member Trucks
  15. mint88

    1988 5.7 Swap

    Hey, About a year ago, I did an engine swap on my 1988 C1500 from a 5.0 to a 5.7, and it mostly went well. However, there are a couple things I have not been able to work out. One thing is that it stalls every now and then. It'll happen when I am breaking, in park, accelerating, or whenever it...
  16. SouthernChevy74

    1989 Silverado Ignition Cylinder Swap

    Okay so awhile back my ignition stuck & it stuck while it was running so I pulled the coil wire. After one of my cousins messed with it, he got it unlocked but it would turn over without the key. & since I'm trying my damndest to get the ole gal fixed back up, I found an ignition cylinder like...
  17. Oldschool88

    1988 305 - 1995 350

    I'm new here and I have a question. I have a 1988 GMC C1500 that had a 305. I recently swapped it for a 350 out of a 1995 Chevy K1500. This is my first swap so what do I need for a wiring harness? Will the harness match up with the truck as well? And is there anything else I need to do to get it...
  18. A

    L05 350tbi knock

    I have already made a post on this, but I now have lots of video Take a seat this is gonna be a long one. Back in June I bought a 1992 Buick roadmaster wagon that needed it’s 700r4 rebuilt. I was told it has 200,000km on it and the cluster which reads 300,000 was swapped out of a different...
  19. Matthew40566

    Carb problems.

    Hello, Last December I picked up a 1988 GMC C1500. It has a recently swapped and rebuilt 5.7 with a 700r4 trans. The engine was rebuilt with a Holley 4175 that's missing most of the choke components. Now that it's starting to get cold it takes about 45 seconds to start and has to be warmed up...
  20. 2

    pulling a blown engine from 89 GMC 2500 with the 350

    this will be my first engine removal. I've worked on a lot of engines but have never pulled one out. I have the fluids drained, radiator removed, fan assembly off, exhaust manifold unbolted, and starter taken off. Bare with me im 19 and could really used some help. what would be my next steps...
  21. Horntoad

    TBI Throttle body 88-95 ridge removal

    On a number of forums, including this one, removing the ridge from a 350 throttle body (Rochester 220) is discussed and recommended. The reasons given are that it removes an air flow restriction and deshrouds the injectors. While not disputing those recommendations, I'm just wondering what the...
  22. A

    97 C1500 350 manual, enjoy

  23. Jacob Hendrix

    '97 5.7 Vortec Low Oil Pressure

    In my '97 C1500 Silverado, I'm getting the check gauges light and low oil pressure. I had thought at first that it was the actual gauge cluster since those tend to jump around anyway, but after driving for a week or 2, I started noticing a slight clacking noise. To me, it sounds like something...
  24. R

    '91 350 TBI cooling system weirdness

    Changed thermostat and hoses, trying to bleed the cooling system with a spill free funnel (already tried with just the rad cap off on ramps, same result). Anyone have an idea of what's going on?D have much experience bleeding cooling systems, not sure if this is normal. First video is idle with...
  25. R

    [Solved] 700r4 - Hard 1-2 shift, 2-3 light but not soft

    Hey guys, I have a 1991 GMC Sierra k2500. My transmission shifts pretty hard into second gear, and you can definitely feel it shift into 3rd but it's not anywhere near the 2nd gear shift. Everything after 3rd is fine. I have checked my TV cable. It's as tight as it can go, and when moving it...
    • ryanguy426
    • Thread
    • 1-2 shift 1991 350 4l60 700r4 gmc hard shift sierra
    • Replies: 4
    • Forum: Transmissions

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