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4.3 donor thoughts

Discussion in 'Early CJ5 and CJ6 Tech' started by kaiser_willys, Aug 25, 2010.

  1. kaiser_willys

    kaiser_willys Well-Known Member

    dont get me wrong fellows, i love my :hurrican: but thinking ahead and am leaning tword a 4.3 chevy:) there are many reasons for the 4.3 as a good choice but my question is what would be a good donor vehicle. i am looking at buying a whole vehicle and there are a couple in the local trader, thinking of getting TBI along with saggy stuff all in the same vehicle then sell the rest for scrap:D a buddy of mine was telling me of a fullsize chevy pickup with 4.3& 5sp with a bad tranny for $400 circa late 80's early 90's. hell it would bring $300 scrap minus the motor:) just not sure what steering setup it has:rofl: so what would be good donor vehicles I ask you good people:beer:
     
  2. Mike S

    Mike S Sponsor

    Exactly what I did, 1995 Blazer, running for $200, hit in the rear, and totaled by the insurance co.

    I am lucky enough to have a place to keep the hulk until I am done with the Jeep, that way, I get to pick over the parts as I discover something else I need.:D
     
  3. kaiser_willys

    kaiser_willys Well-Known Member

    95 still have TBI?
     
  4. kaiser_willys

    kaiser_willys Well-Known Member

    also a straight drive with hyd clutch would be preferable, just looking to make my old heep a little more user friendly;) but I am gonna miss that low end torque that the :hurrican: makes :(
     
  5. nickmil

    nickmil In mothballs.

    Drive something with a 4.3 and you won't miss it a bit!:) The F-4 is a good motor for what it is, but modern engines will blow it away every time unless going for the retro or originality.

    An S-10/S-15 Blazer or pu would be the best donor but don't rule out Astro Vans either. A TBI unit is inexpensive and easier to deal with than a CPFI
     
  6. kaiser_willys

    kaiser_willys Well-Known Member

    XACTLY what i needed to hear:D never ran 5:38's behind anything other than a L or F 134, but those damn little motors are like a tractor:rofl: Ifin a 4.3 with 5:38's will chug along like a willys engine i would say you are spot on:beer:
     
  7. nickmil

    nickmil In mothballs.


    I've got 5.38's with a mildly warmed up 231 in the '59-5 and love them off road. A little low on the highway (33" tires) but will still do 55-65 without trouble. It definitely scoots when I want it to.
    I put 5.38's in the '6 but it has an overdrive tranny and 36" tires, haven't driven it yet....
     
  8. Warloch

    Warloch Did you say Flattie??? Staff Member

    Nick - which years are the best to go for on those to get the TBI? I don't need one (love my Powerjection even more since wheeling with it) but may need to get one for the niece depending on which direction she wants to go with a rig.
     
  9. nickmil

    nickmil In mothballs.

    There was a year or two that used Vortec heads and TBI. I can't remember for sure but want to say around '94 or so. I may be off on that though. Patrick could probably help with the years. That's kind of the holy grail for swapping. Most torque and hp for a TBI system with minimal swap hassles and expense. I've got a '90 TBI 4.3 in the garage waiting to go into a Jeep and have a set of Vortec heads waiting for rebuild to put on it. Gathered the parts back when they were harder to find. Now complete good running engines are cheaper than what I have in parts:rofl::beer:
     
  10. Mike S

    Mike S Sponsor

  11. hopp

    hopp On our way....

    Had a 93 4-door with vortec heads and TBI.
     
  12. Warloch

    Warloch Did you say Flattie??? Staff Member

  13. Mike S

    Mike S Sponsor

    Chuck, you are welcome.

    The forums for the S10/S15 truck folks also have a ton of info, specially the hot rodding side of things.
     
  14. Corveeper

    Corveeper Member

    Yes, at least in the S-10’s ’95 was still TBI.
     
  15. bergy9

    bergy9 Jeep Maffia, CJ 5 Chapter

    Going with the 4.3, don't you need to move the motor mounts, off center the motor, or channel the fire wall? Seemed to be several mod's that need to be completed going from the 225/231. I thought I read that here, and that is why I rebuilt my 3.7.
     
  16. Warloch

    Warloch Did you say Flattie??? Staff Member

    You have to move the motor off center, but the 225/231s are that way as well. The V6 gives you enough room to move it forward so you don't need to notch the firewall (based on the space I have with 225/231s). When/If I go this route it will probably have a SM465 hanging off of it, so none of that will be much of an additional concern.