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Forum: 4.3L V6 Engine Tech

Vortech 4300, LU3 & LB4 Motors

  1.   Sticky Threads  

  2. Smile Sticky Thread Sticky: 4.3L Vortec Marine Intake Conversion Helpfull Hints:

    Our Test Mule... 98 GMC 4dr Mega Moose Jimmy 4x4. Hello 4.3L Fans.... If your looking for some information for deciding weather the Marine...

    24 Pages
    1 2 3 ... 24
    • Replies: 359
    • Views: 257,497
    02-14-2018 10:10 AM Go to last post
  3. Sticky Thread Sticky: 4.3L V6 Platforms and Engine Codes

    Thanks to Josh Downey and Wikipedia for the info. The Vortec 4300 is a 90° V6 truck engine, replacing the Chevrolet 250 in light trucks and...

    • Replies: 4
    • Views: 16,439
    06-21-2013 01:42 PM Go to last post
  4.   Normal Threads  

  1. LU3 Fuel System Diagram

    As the title state I am looking for the Upper Manifold fuel system diagram for a 2007 4.3. To give you folks a little background I bought the...

    • Replies: 2
    • Views: 366
    08-25-2017 08:02 AM Go to last post
  2. 4.3 Engine Interchanges?

    I am currently running a very tired 1987 4.3 V-6 in my street rod and wish to replace it with a newer 4.3 with lower miles. My question is, what...

    • Replies: 1
    • Views: 420
    08-24-2017 05:49 PM Go to last post
  3. Solid Roller cam in a late 4.3

    My name is Steve, I am new here. I have a Datsun truck 1976 with 4.3 v6 running low 11's. I receintly started building a new 4.3 motor, 1987 (factory...

    • Replies: 0
    • Views: 189
    08-05-2017 11:50 AM Go to last post
  4. '96 4.3 Vortec Harmonic Balancer Upgrade

    Building a '96 4.3 running a ProCharger P1sc (now for 30K) and am looking for harmonic balancer/damper options-I want a steel one because of the...

    • Replies: 2
    • Views: 475
    05-30-2017 02:16 PM Go to last post
  5. Cam opinions and Questions (legit stuff)

    Ok so I've been over on S10 forum for 12 years this i'm going to copy my thread bc I think the knowledge base is great over here and i'd love to get...

    • Replies: 0
    • Views: 257
    05-29-2017 03:04 PM Go to last post
  6. What aftermarket harmonic damper is available for '96 4.3 Vortec OBD2?

    I'm rebuilding my '96 4.3 vortec running Marine manifold, 44#inj, '0411 pcm, intercooled ProCharger P1sc which I have 30,000+mi on combo-80k total...

    • Replies: 1
    • Views: 316
    04-08-2017 03:25 PM Go to last post
  7. 4.3 Intake swap

    Hello, I have a 93 vortec switching from EFI to carb for my trail truck. I found an Intake off an 86 that's a 4 barrel . My question is can I...

    • Replies: 1
    • Views: 404
    03-27-2017 09:02 AM Go to last post
  8. Edelbrock intake differences?

    Hey guys new to forum so please forgive me if this has come up before. I have a '89 Jeep YJ that I swapped a 4.3 out of a '89 s10 into. Part of...

    • Replies: 0
    • Views: 451
    02-02-2017 10:09 AM Go to last post
  9. older camshaft in balance shaft motor ?

    IS this possible ? will it work ? An older camshaft in a non balance motor ?

    • Replies: 0
    • Views: 361
    01-25-2017 08:44 AM Go to last post
  10. 350 hp v6

    Is it possible to build a 4.3 to 350 HP (or more) on a carburetor? I want something economical and durable that would work in place of v8, just to...

    • Replies: 0
    • Views: 948
    11-14-2016 05:46 PM Go to last post
  11. building a 4.3l

    ok so i can do the 60*(3400) thing, but im looking at a 92 4.3l v6 to rebuild better stonger faster for my boss. i have found a few things that are...

    2 Pages
    1 2
    • Replies: 21
    • Views: 20,237
    09-09-2016 02:01 PM Go to last post
  12. Question Does 1991 chevy s10 4.3L need oil slinger?

    I have a 1991 chevy s10 4.3L v6. When removing the timing cover, there did not appear to be an oil slinger. The chain was in pretty bad shape and the...

    • Replies: 0
    • Views: 487
    09-04-2016 03:04 PM Go to last post
  13. 4.3 Hesitation, Bog, occasional backfire

    the motor is out of a 93 s10, ive swapped the motor in to my 4runner. I am using an affordable fuel injection harness and AFI programed chip. The ECU...

    • Replies: 0
    • Views: 834
    07-27-2016 09:10 PM Go to last post
  14. Need Low RPM Torque out of a 4.3 Vortec

    Hello everyone, I am in the process of building a 4.3L vortec with a balance shaft. I want to get all of my power from idle to 3500RPM The...

    • Replies: 1
    • Views: 1,282
    05-26-2016 11:35 AM Go to last post
  15. Unhappy I'm new here and could use some help, please.

    Hi guys, I'm new here and just recently got this 1991 4.3L V6 GMC S15 Jimmy SLX from a co-worker that was fed up and frustrated with working on it. ...

    • Replies: 1
    • Views: 856
    05-25-2016 04:44 PM Go to last post
  16. 4.3 Vortec Marine Intake manifold

    I'm looking for a COMPLETE 4.3 marine intake that will bolt to vortec heads for a turbo project on my 4.3 Silverado. I have seen a few on Ebay but...

    • Replies: 1
    • Views: 1,240
    03-17-2016 07:28 AM Go to last post
  17. N/A 4.3L performance build

    Working on my 1994 Cheyenne that I am autocrossing and wanting to build a V6 powered truck to shame the V8s i run against. The build will stay...

    • Replies: 8
    • Views: 2,173
    03-16-2016 09:57 PM Go to last post
  18. '99 4.3L swap from a '92 or '95?

    My dad has a 1998 Blazer 4wd with a bad engine and asking if I could help him put in another engine. A friend has a couple 4.3's he'd let us use:...

    • Replies: 3
    • Views: 1,174
    03-16-2016 09:45 PM Go to last post
  19. 4.3 Build Advice Needed

    I am building an L35 4.3 out of a 2000 blazer for a swap. I will be running the injection, ECU, wiring out of the donor truck. I WILL be having the...

    • Replies: 1
    • Views: 1,239
    03-16-2016 05:56 PM Go to last post
  20. Question Decisions, decisions

    Hey everyone, i'm new here as of yesterday and have found the site very informative already. I have a question regarding future plans for my 94 s10...

    • Replies: 0
    • Views: 748
    03-16-2016 05:12 PM Go to last post

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