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4.3 litre V6

Discussion in 'The Garage' started by 19Jimmy87, Aug 8, 2002.

  1. 19Jimmy87

    19Jimmy87 Registered Member

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    This is probably a dumb question to many of you, but is there a reason NOT to use a 4.3 in my JImmy? I need a new engine, and have been looking at 350's and 400's. Then I seen a 4.3 with very low miles and started thinking. It would be cheaper on gas, and thay can produce more horsepower than my 305, what is the deal?
     
  2. bryguy00b

    bryguy00b 3/4 ton status

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    hheaaooollll no! go for a 350 if your doing a new engine!! true that gas mialage pretty much sucks but all that pays of with all that power!!i dont even know if a little v6 would fit with out modifications...?

    Bryan
     
  3. HarryH3

    HarryH3 1 ton status Author

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    You need TORQUE to get that big ol' truck moving. The 4.3 just doesn't make it... HP is a function of torque and RPM, so don't look only at HP numbers. Wind a tiny engine up high enough and it can make some pretty impressive HP numbers, due to the RPM part of the equation. I think the 4.3 is pretty weak, even in my little S-Jimmy. I can't imagine what a slug it would be bolted into a 5,500 lb brick with the aerodymanics of a barn. /forums/images/icons/shocked.gif
     
  4. 19Jimmy87

    19Jimmy87 Registered Member

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    Point well taken.
     
  5. four_by_ken

    four_by_ken 1/2 ton status

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    Not to mention a 350 will have more power than the 4.3 and if you want to build it, it will be MUCH cehaper to build up a 350.

    Ken H.
     
  6. CHEVY 4WD

    CHEVY 4WD 1/2 ton status

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    Would gas mialage be all that much better? the 4.3 would half to work alot harder to push the weight so would you really be saving anygas unless you always staying at a stedy speed?
     
  7. mplogic

    mplogic 1/2 ton status

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    The GM 3.8 and 4.3 are nice torquey motors for small trucks and light duty applications. I really wanted to put a Pontiac supercharged 3.8 into my last truck which was an 87 4runner. But when I started looking at how minimally the Toyotas were designed, I was going to have to swap trannys and drivetrain to handle the extra power and it would have been a much bigger project than I could afford. Would have been fun though /forums/images/icons/smile.gif
     

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