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1964 CJ5 - Chevy motor swap?

Discussion in 'Early CJ5 and CJ6 Tech' started by weedy, Jan 14, 2009.

  1. weedy

    weedy Member

    Anyone ever put a vega motor in a CJ5 with a three speed and a twin stick transfer case?
     
  2. DrDanteIII

    DrDanteIII Master Procrastinator

    well probably not. If you are going to go through all that trouble, why not go v8?
     
  3. 1960willyscj5

    1960willyscj5 Well-Known Member

    Why a Vega motor?:?
    Other than it is laying around your shop and won't cost you nothing, I mean.R)
    It was originally intended to be a throw away engine. After 70K miles you pull it and replace it.
    They were only good for about 120K miles to begin with.monkeys
     
  4. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    If you want a cheap 4-cylinder motor, the 151 cid Pontiac is a better choice than the Vega engine. Even better is one of the GM V6s, Buick or Chevy. All of these can easily be adapted to your transmission.

    Do you know much about the Vega engine? It has a terrible reputation. I'd avoid it for that reason, even if it's an ok engine.
     
  5. scott milliner

    scott milliner Master Fabricator

    No.

    :iagree:
    Even tho I had one that was running great at over 100.000 miles when I pulled it, I still wouldn't use one. My vote would be a 4.3 V-6. May even replace my Marine V-6 with one when the time comes.

    Thinking fuel injection...Mmmmm.monkeys
     
  6. cj-john

    cj-john Member

    Vega engine? Yikes! I just had a flash back to the Vega I had back in the early 80's. Before I gave up on it I was using chainsaw bar oil in the engine. I'm not sure but it might have been a one off Vega 2-stroke. May have been a collectors item...
     
  7. mtndewmaniac66

    mtndewmaniac66 Down to Earth!

    I had a vega once.......
     
  8. 80cj

    80cj Member

    I had a 74 Vega and at 80k miles, it was using a quart of oil every 250 miles. I bought a sleeved short block and oil consumption just dropped. It would go over 3000 miles without having to add any oil. Ran really good too. But I wouldn't stick one in a Jeep. I've heard of people swapping Pinto 4 bangers into Jeeps with good reliability. Good for the light flat fenders with 5.38 gears as the little fours will rev and give good gas mileage. Nothing's better than a Buick or Chevy V-6 , though.
     
  9. Patrick

    Patrick Super Moderator Staff Member

    But you could put a :hurrican: in a Vega and have a reliable car....;)
     
  10. DKillam

    DKillam Sponsor

    R)

    Then you would want more HP/torque :v6:

    then SBC :twisted:
     
  11. mtndewmaniac66

    mtndewmaniac66 Down to Earth!

    Ironically, I also had a '74, it ran really well for what it was, I got my first speeding ticket with that car, which was a surprise to me. It was very reliable, after I adjusted the valve tappets, until I got rearended my an uninsured motorist.

    I am still at odds as to what engine I want to put into my jeep, I've been leaning heavily towards the chevy 4.3 with the buick 231 close behind, but for now the-little-engine-that-could will stay as long as it runs.
     
  12. Hawk62cj5

    Hawk62cj5 Captain of OldSchool

    Id go 4.3.
     
  13. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    4.3L: more available, cheap parts, factory TBI, possible firewall interference.
    225/231cid: distributor in front so no firewall interference, beloved by many Jeep owners, more potential for use of factory parts from V6 CJs.
     
  14. Warloch

    Warloch Did you say Flattie??? Staff Member

    If your thinking serious about FI and don't want to pony up for the 4.3 stuff right now - go with and EF 231 as they are much easier to home build a TBI for.
     
  15. Mcruff

    Mcruff Earlycj5 Machinist

    A standard Vega engine would be a bad idea in my opinion, now a Cosworth motor would be a whole new story!!
    [​IMG]
     
  16. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    My cousin had a Vega.

    it had a little red light mounted to the bottom of the dash, looked like one of those cheesy cheap indicator lights you'd buy at a FLAPs to act as a fog light indicator or something, but it was factory.

    The idea was, when the light came on, you were supposed to throw away the engine :(

    What it really meant was that when the light come on the engine had got hot enough to warp the head. :rofl:

    This was something they found neccesary to add for the second year of production. :twisted:


    H.
     
  17. Patrick

    Patrick Super Moderator Staff Member

    That's kinda what I was hoping he had when he mentioned Vega.;)