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  • #1

    Power Adders

    i was originally going to drop a 350 into the jeep, but then i got rid of my 454 so i left the 350 in my truck, so now im in a huge debate over power adders. should i find a stocker kit? will they have a stocker kit out for the 4.0L? supercharger? turbo charger? sequntial twin turbo? throttle body spacer? new cam? lifters? exhaust??
    i dont know what to do?? im looking at a set of 42" for her and i dont want to be moving those buggers with the 1xx ponies ive got. what do you guys think/tried?? the work or moneys not the problem, well not a huge problem, ill just pull another mortgage on the house, lol
    :devil: Giffer
    Tags: None
  • #2
    Originally posted by Giffer View Post
    supercharger? turbo charger? sequntial twin turbo?
    NO!
    Not for anything that is going to hit dirt... unless you really like rebuilding. Besides, power adders are for the upper RPM range. If you want more power, stick to the basics. How much power are you looking for? Do you have HP and torque numbers in mind? A clean running 4.0 will give you better power than most junkyard 350s
    "The problem with socialism is that eventually you run out of other people's money."
    -Margaret Thatcher

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    • #3
      im looking at putting 42" on the beast. and i dont want the power i have with 35's to get worse. i have no real figures in ming just need more power. and i didnt want to add anytype of "induction" type power adder for that reason.
      :devil: Giffer

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      • #4
        Well, you can get enough power out of your 4.0 to turn those tires through gearing. I'd guess in the mid to high 5s for a ratio. You'll probably need some beefier axles anyway to support them. If you really want more juice, a Ramjet 350 is a popular choice.
        http://www.gmperformanceparts.com/En...9120&engCat=sb
        "The problem with socialism is that eventually you run out of other people's money."
        -Margaret Thatcher

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        • #5
          well ive got dana 44 front and back so the axles should be beefy enough, and i dont want to go to the extreme of a engine swap. not yet anyways. ive got to much going into my GMC to spend as much as a crate engine.
          is there any way to find out what type of gearing i should go with?? simple calculations?? and a regearing was my best idea to start with too.
          :devil: Giffer

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          • #6
            Yellow is fuel economy range.
            Black is mid-range.
            Blue is power range.

            "The problem with socialism is that eventually you run out of other people's money."
            -Margaret Thatcher

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            • #7
              thanks! that really helps. someone should sticky that!
              :devil: Giffer

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              • #8
                ok found a set....... but then realized i dont know anything about gearing.
                http://completeoffroad.com/i-123992-...3-dana-44.html
                will those work??
                the part that says
                5.38 gears (5.43) dana 44- works with 5.43
                i dont get it
                :devil: Giffer

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                • #9
                  Originally posted by Giffer View Post
                  ok found a set....... but then realized i dont know anything about gearing.
                  http://completeoffroad.com/i-123992-...3-dana-44.html
                  will those work??
                  the part that says
                  5.38 gears (5.43) dana 44- works with 5.43
                  i dont get it
                  Depends on the way the teeth are meched. Extra teeth mean weird numbers, even if they turn at the same rate, pretty much. For instance, My rear axle is a 4.10 8.8 and my front is a 4.11 D30 and they work together just fine. Think about a mountain bike. You can hit the same gear ratios by clicking the front gear up one and the rear gear down two. It's the same ratio but just a little off if you actually count teeth and divide. It's not enough of a difference to matter.
                  "The problem with socialism is that eventually you run out of other people's money."
                  -Margaret Thatcher

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                  • #10
                    Originally posted by Giffer View Post
                    well ive got dana 44 front and back so the axles should be beefy enough,
                    I don't mean to pop your bubble, but if you go off road, 42" tires on Dana 44's are a big mistake. If you build the 44's with alloy axles, 300m U joints and heavier steering components you can get away with 37's.

                    Keep in mind the lower your gearing, the smaller and weaker the pinion gear will be, along with less contact with the ring gear.

                    Also, give some thought to your transmission, transfer case and drive shafts. If they're stock, they wont last. Be prepared for major hacking on the sheet metal along with a large lift and extreme drive shaft angles.

                    Don't forget about the brakes. You'll be adding 350+ pounds of tire mass plus the mechanical disadvantage of the large diameter tires. You will need a hydro boost at the very least.


                    Good luck with your decision.
                    Last edited by Double AA; 05-03-08, 08:49 AM.

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                    • #11
                      so all and all you guys think that my 35 is the way to go before some serious issues?? well is there anyone here running anything bigger then 35?? whats there set ups.
                      :devil: Giffer

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                      • #12
                        Originally posted by Giffer View Post
                        so all and all you guys think that my 35 is the way to go before some serious issues?? well is there anyone here running anything bigger then 35?? whats there set ups.
                        A lot of guys run 1-ton axles to get up higher than 37s. They are pretty plentiful at junkyards. Rockwells are 2.5 ton, but that might be overkill for anything less than a 44.
                        "The problem with socialism is that eventually you run out of other people's money."
                        -Margaret Thatcher

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                        • #13
                          35" tires are a nice economic way to go, you run 4.88's and call it good, you will have the power you want, and the 35" tires will still give you some reason to pay attention to the trail... I have a lot of buddies with 37" + tires and they can get both lazy and extreme... remember that if you build it to wheel all crazy like that, you will have to go there and prolly break yer junk 'course if thats yer thing, have fun!

                          but my :2: is bang for buck and fun on trail, 35" still keep it interesting, and don't cost so much, plus yer 4.0 will still do the job...
                          :gun: my rifle is not illegal, it's just undocumented... :gun:

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                          • #14
                            WOW! I am learning alot just reading some of these strings. You guys have answered many of my questions already

                            Thanx

                            Scott

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                            • #15
                              alright fine. ill stick with the 35's. for now.........
                              :devil: Giffer

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