vortec

  1. B

    Cam and 411pcm swap

    I have a 97 k1500, l31 vortec motor, 4l60e, np243, 10 bolt 3.73 truck and I’m putting a used but less blown up motor in it here soon. Exact same motor but I’m looking to give this thing some more power and get that cam sound. I’m looking into a melling m-22280 cam right now and a set of .510...
  2. AlbertaOBS

    2000 K2500 - 383 Towing Build

    Hello all, I've been lurking here for quite a while and have learned a ton from the information on this forum, so I figured it was time I shoot my shot. I have a 2000 GMC K2500 crew cab short box. L31 vortec, 4L80E, 3.73 - 9.5 SF, 8600gvwr, 2" lift, 285/75R16 Duratracs nearing 300k km. It is...
  3. RP95

    Misfire when making a right turn

    Got a weird one for you guys 1998 K1500 5.7 Vortec 4L60E 220,000km A few days ago the truck developed an intermittent misfire. This occurred during very heavy rain for 3 straight days, I had hit a couple deep puddles and sucked in some water through the air cleaner, I blamed that initially...
  4. C

    How much play is expected in the distributor

    I've done a fair bit of searching and am not sure if I'm seeing to much play in my distributor. It seems like most videos just show really bad ones. I feel like I shouldn't see any play at all, but I lack the experience many people here have. This is 1999 k2500 7.4 vortec This is a link to a...
  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. Strages

    1996 7.4 Vortec, Cranks, No Start

    This one is most perculiar. Owner states "Truck died idling in traffic" he then proceeded to crank the engine until the battery died. Erasing any code it may have had. The last thing i had tinkered with previously was a tuneup that ended up more requiring a distributor replacement because of...
  7. A

    98 5.7 vortec swap into 1996 k1500

    I have a 1996 Chevy k1500 that had a 4.3 vortec v6 with an nv3500 behind it I pulled the v6 out and put a 5.7 vortec v8 with the wiring harness and ecm from the 1998 Chevy pickup it was pulled out of. I got everything hooked up and ran wires to the starter with a button start it there’s no codes...
  8. A

    Light random all cylinder misfires 97 5.7 vortec

    Hello all, I’m going to start with everything that has happened so far. And I’m sorry this might be long. While traveling to work one evening, the truck died on me. I quickly diagnosed fuel pump because it sounded awful. Got it towed back to the house and started taking it apart. Before...
  9. B

    5.3 Vortec from a 2007 GMC 1500

    For whoever is looking for a 5.3 Vortec engine, at the PullAPart in Memphis, TN, they are selling this one for $650.00 (see pics). Just seen it this morning that I am in Memphis and was killing some time doing a junkyard scout.
  10. 97c1500r

    Exhaust flange nuts

    Hi everyone. I'm new here. The past few weeks I've been slowly breaking down the engine on my 97 Chevy C1500 5.7 Vortec to investigate a random misfire and smoke coming outta the exhaust. Come to find out a pushrod was missing on cylinder 4 under the valve cover, that I eventually found under...
  11. A

    Replacing Quick-Connect Fuel Line

    Hey all, Hoping someone has an idea for me. While I was dropping the tank to replace the fuel pump, I didn’t quite get the return line disconnected all the way, and the quick-connect broke, I can’t get it back together, and I’m hoping someone has some idea of how to fix it since the lines are...
  12. S

    Need help with Cam, Heads, and tune choices

    I Have a 4x4 1997 GMC Sierra k2500, with a 5.7l Vortec. It has 170k miles, and the 4l80E transmission, also. I am contemplating having my local shop do 4.56 gears from 3.55, but thats a conversation for another day. I will probably do a 2.5" true dual exhaust as well (outside the 5k budget)...
  13. 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...
  14. 19971997

    1997 C2500 Engine swap w/ TBI Long Block

    Im writing this in a hurry since im on my lunch break but this is what i got going on: Picked up a nicer than normal northern states truck (Indiana) with a trans issue. It would only drive in revrse. I got the tranny rebuilt and the truck drove fine back from the shop. 2 weeks later it had all...
  15. supspt454

    411 Swap 383 Vortec Newbie To Tuning. Where To Start?

    I have done a lot of searching and reading before posting. It seems all situations are different obviously. Did the 411 swap on my 383, so now my truck has the brains of a 02 Chevy Express Van. VATS disabled, some minor things already flashed when I got it. EGR turned off, bank 1 sensor 2...
  16. Aidan Kesler

    Top end build worth it?

    first and foremost I’m not a tbi guy lol I ditched my tbi for an old school carb swap for my own personal preferences! Yes I used a 4l60e carb TPS sensor mounting setup for the trans, but that’s besides the point!! Anyways lol I’m sorta new to building motors so I need some insight. I’m...
  17. VictoryRed

    Cams

    going to be buying an aftermarket cam currently planning on getting one with these specs: Duration at .050 in. 215/223, Lift .473/.473, as well as upgraded springs My main concerns are tunability of the stock black box and having enough vacuum to use my brakes without doing hydroboost. You...
  18. 2doortahoetoby

    Engine Rebuild Torque Specs

    I have been searching across the internet trying to find torque specs on all the motor internals. I have a spare motor completely stripped to the block and I am installing all new parts. I have been finding a mix of numbers on the internet for torque specs, and can't seem to find reoccurring...
  19. N

    99 Tahoe 5.7 died on the way to work, crank no start, P0307, replaced crank sensor, no fix. Plz help.

    Hey all, I bought this 99 chevy tahoe in July, and had replaced a couple things since then. It has 224k on it, and it ran just fine before, with no real issues. Ive replaced the: Catalytic converters belt tensioner idler pulley Distributor cap and the battery since I had bought it. But the...
  20. 2doortahoetoby

    Best 5.7 Vortec Long Tubes

    I’m sure this has been discussed before, but I see a lot of back and forth of arguing with header recommendations on the threads, LOL. Looking to purchase a set of long tube headers for my 5.7 vortec. I will be doing an EGR delete to broaden my choices for long tubes. Obviously I can’t narrow...
    • 2doortahoetoby
    • Thread
    • exhaust headers long tube headers long tubes vortec
    • Replies: 6
    • Forum: Exhaust
  21. O

    Vortec heads on stock TBI 350

    Hi. I’m new to the forum and had some questions about my 1992 Chevrolet Cheyenne. It recently had a set of 906 vortec heads installed on an otherwise completely stock tbi 350, now it’s not running all that well. When accelerating hard it chokes and wants to stall. Sometime backfires. It also...
  22. S

    Best Vortec head spark plugs for reliability and performance?

    Hi everyone I’m curious what spark plugs I should put in my 350 when I install my vortex heads, I heard AC delco are the best. What would you recommend? Headed to advance auto tonight
  23. S

    Thread size on TBI water pump?

    Anyone know the thread size on this plug in my water pump? I need to get a Vortec coolant bypass in order using this plug hole, I assume I can do that
  24. S

    Good hydraulic flat tappet spring kit for Vortec heads and questions

    Hi everyone I’ve been looking at the comp cams beehive springs, I understand they are duel spring, for running a 450 or lower cam should I remove a spring? I also want springs I can use for not only my peanut cam, but my other cam that I want to put in that has 470 of lift or if I just...
  25. S

    Z28 springs on Vortec heads

    Hi everyone I bought a pair of vortecs https://www.jegs.com/i/JEGS/555/514080/10002/-1 Linked here^ I’m pretty sure the springs on these heads are for a roller cam which I don’t have. I have a set of Z28 springs made by a company called engine tech, got them for 60 bucks on eBay. I am...

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