Vortec 5.3 Or 5.7

Discussion in '40- & 55-Series Tech' started by fj40land, Jun 30, 2005.

  1. fj40land

    fj40land

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    Whats the perferred Vortec Engine? The Vortec 5.3 Or 5.7? I plan on swapping a Vortec into my fj40 (1 ton trail rig) and have found both engines (complete fully dressed W/ harness & computer) for the same price. Im not sure which would be the best choice. Also what manual trans are you all running?? Thanks for any help...
     
  2. 1973Guppie

    1973Guppie SILVER Star

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    I am not sure about this but it seems to me there is more info and parts out there for the 5.7, a more common swap. I am running a nv4500 and like it a lot. I still have the 4.11's and need to go deeper eventually when I move to 35 inch tires....

    Noah
     
  3. Medusa

    Medusa

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    If you plan on running an older manual tranny (e.g., SM420 or SM 465) you will have to choose the 5.7 (GEN II) engine, or spend $$ on the AA bellhousing adapter kit for the 5.3L.
     
  4. fj40land

    fj40land

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    Im leaning toward a NV4500. If I Choose The 5.3 I guess that will be my best choice. Thanks...
     
  5. woody

    woody unhelpful spotter Staff Member Admin

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    IMO, if you go with the 5.3, take the tranny that's attached now...will make the conversion mucho easier on you....
     
  6. wngrog

    wngrog SILVER Star

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    Yeah and you should be able to find a 5.3 with low, low miles for way less than a comparable 5.7. If you want a manual, go 5.7.

    I prefer the auto and the 5.3/4l60E setup is nice and cheap right now.
     
  7. theo

    theo

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    Does the 5.3 come with a NV3550? I have that tranny (in one of my pickups) and it shifts like a dream. No granny gear, though.
     
  8. e-man

    e-man

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    The 5.3 is a more powerfull motor from the factory too. None of the 5.3s have distributors either which I see as being a problem with a lot of engine swaps. Of course the 5.7 you are looking at may be distributorless as well.
     
  9. fj40land

    fj40land

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    The 5.3 is still in the pickup. It's a '02 2wheel drive w/ an automatic. If I use the auto v/s a manual, Im not sure of my advantages/disadvantages. Maybe I should research & consider it.
     
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