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383 OR 454 FOR MUD BOGGING

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 88k5canuck, Apr 5, 2002.

  1. 88k5canuck

    88k5canuck Registered Member

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    I am looking into getting a motor build some time this year. My choices area 383 or 454. I want about 400hp & 400 ft of torque. I going to be running 14bolt, d60 and 40" tires. I want an engine that is capable of some serious tire spinning mud flinging power. The 454 is the choice for most people because of great torque & hp all the time. But taking budget into consideration I think the 383 would be cheaper to build and it it works almost equally. I also already have a 350 block & all the accessory's. For the 454 I would need everything. Anyway thanks for your input.
     
  2. shane74

    shane74 1/2 ton status

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    Go with what works for the pocket book.
     
  3. dyeager535

    dyeager535 1 ton status Premium Member

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    The bigger cubic inch motor, all else the same, (and being able to hold up to the same stresses) will always win in an output contest. Go with the absolute largest you can, usually governed only by checkbook cubic inches. With tires that big, and mud bogging, I'd be thinking balanced 454 or even 502 if you can swing it.
     
  4. RedDwarf

    RedDwarf 1/2 ton status

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    Weight savings wins over cubes in the mud. At least that's my experience. Stock Sammurais can do some amazing things in the mud.

    My 350 will turn the tires pretty fast...if you build the 383 right, it should be all the cubes you ever need without the weight and extra $$$ of the big block
     
  5. CaptCrunch

    CaptCrunch 1/2 ton status

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    A 454 lives much better at higher rpm's then the 383, which is a big part of deep mud bogs. If you want sbc weight stick with a 400 motor. A little better for higher rpm's IMO.. more hp as well
     
  6. dyeager535

    dyeager535 1 ton status Premium Member

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  7. Zepplin

    Zepplin 1/2 ton status

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    Big Block of course. I partial to a stroked 454. I like how '496' rolls off your tongue!!!
     
  8. TwoCrowsDesign

    TwoCrowsDesign 1/2 ton status

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    Now that sure was purty!
     
  9. white_knight

    white_knight 1/2 ton status

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    I would definately go for the 454. That low end torque works.
    Hmmm. the sound. I could say the knight's built 454 has almost thrown some realty into the next county. A little land redistribution /forums/images/icons/smile.gif

    <a target="_blank" href=http://www.whiteknight.ca/f2robinb2.jpg>http://www.whiteknight.ca/f2robinb2.jpg</a>
     
  10. 8_YOUR_H2

    8_YOUR_H2 1/2 ton status

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    All of the winning trucks run big blocks where watch mud races at. My little mouse just cant keep up. You just cant beat the torque of a bigblock.
     
  11. 88k5canuck

    88k5canuck Registered Member

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    The reason I ask this the best truck I've seen so far for mud bogging wasn't running 44's a big block. It was a newer extended cab Chevy with 38's Ground Hawg and a blown 350 putting out 650 hp. This truck does amazing well due to the rpm he hits the mud pit with. Make the big blocks look slow. Anyway that is a lot more hp that I am talking about.
    Thanks for your input guys.
     
  12. CaptCrunch

    CaptCrunch 1/2 ton status

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    There is a chevy pickup here that has a 377 in it (destroked 400) and it rocks in the pits. His gearing is setup for it and that sucker loves high rpms. Basically for mud rpms and hp is the ticket. A 400 motor can be made to rip, but you will need some cash in it for heads and other items for it to keep making power at higher rpms. I really think the weight savings of the sbc compared to the bbc (especially if you went alum heads) is pretty much worthless in a 6,000 lbs trucks w/ one tone or better axles. Another thought is to run a 455 pontica, or a 472/500 caddy motor. sbc weight for the most part, and bige cubes and torque. There is an additional $.02 for ya.
     
  13. Hossbaby50

    Hossbaby50 3/4 ton status

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    A 377 destroked motor will scream. It would be great in a light to medium weight truck. I personally have decided against a 383 and I am going with a 454 next (I think). I don't mud run though. I just like the low torque of the 454, and the good horsepower you can get out of the midrange. This way, when that 454 goes, I can always have it rebuilt to a 496 or something else unGodly. With a 383 you basically have maxed out your smallblock. A 454 is nowhere near maxed.
     
  14. zakk

    zakk 1/2 ton status

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    get a 540 World Monster Motor. only $7.5k from summitt and it'll be shipped to your door/forums/images/icons/smile.gif
     
  15. RedDwarf

    RedDwarf 1/2 ton status

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    Yes, but at a mud race, the "mud" is only 2 feet deep /forums/images/icons/tongue.gif

    Big blocks are cool, but I will stick to the small block in my boggin truck.

    Yes, 377 is a better engine than a 383. I always prefer a shorter stroke/bigger bore. He didn't list that as one of his options though.
     
  16. NITRO

    NITRO 1/2 ton status

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    well, i run a 555cid caddi engine. it has the sement sh!t in the cooling jackets bcause it is bored like 120over. i run it on seablue 114. But, its also the #1 truck in the state. it all depends on ur budget and u r gonna do with it. it has a 12" lift and 44" boggers. If ur gonna do it, u might as well do it right. It run both boggs and mud drags.

    NITRO
     
  17. NITRO

    NITRO 1/2 ton status

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    well, i run a 555cid caddi engine. it has the sement sh!t in the cooling jackets bcause it is bored like 120over. i run it on seablue 114. But, its also the #1 truck in the state. it all depends on ur budget and u r gonna do with it. it has a 12" lift and 44" boggers. If ur gonna do it, u might as well do it right. It runs both boggs and mud drags.

    NITRO
     
  18. chevyboy24598

    chevyboy24598 1/2 ton status

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    I wouldn't go with either. I would go with a 350 or 377 with low gearing. I run a 600hp naturally aspirated 350. It works real well with the 4.56 gears and 33s, just got to shift a lot.
     
  19. morphed86k10

    morphed86k10 1/2 ton status

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    personally, 600hp from a 350 is a bit much. I want my engine to live a long and happy life, which is why I've chosen to go with a lightly stressed big block and have about the horsepower of a strong 383 with more torque.
     
  20. Z3PR

    Z3PR Banned

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    For the money to build a big block, I'd say build a 383 small block and supercharge (BLOWER) it !!!
     

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