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454 vs 427 vs 383 stroker

Discussion in 'The Garage' started by jk3078, Nov 26, 2005.

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454 vs 427 vs 383 stroker

  1. 454

    44 vote(s)
    41.5%
  2. 427

    36 vote(s)
    34.0%
  3. 383 stroker

    26 vote(s)
    24.5%
  1. jk3078

    jk3078 1/2 ton status

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    What motor would be best for a screaming mud monster? I have 2 427, one needs a total rebuild the other lost a rod and might be good for parts. I have everthing for the 427 from carb to exaust manifolds. Should i sell these and get somthing more comon? Im on a budget so a high end motor build is out of the question. Cost vs performance? Im running a tired stock 350 and its got to go in the next year or so, need more power! :D Any info would be cool thanxs.

    O, specs on my junk
    78k5 350/465 center force2 with dual friction/205/60/14bsf welded-ff soon/1350 rear shaft/37'' boggers/ 4''tc shackel flip/ord shackels and steering brace homemade bumpers/12000#mm/ beat to SH** :D
    85 sub 350/700/208/10blts welded/chopped/cut/stripped/ 100'' wheelbase/35'' swampers and gittin beat fast

    CO-FOUNDER POORBOYS OFFROAD
     
  2. jtl_77

    jtl_77 Registered Member

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    I would go 454 just for the extra cubes. But if you are on a budget and have 2 427 you should probably go that route.If you have the money to build a 383 then put that toward your 427.
     
  3. diesel4me

    diesel4me 1 ton status Premium Member

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    high revs??

    A long stroke motor will toss a rod quicker at high rpm's than a short stroke one will--at the expense of some torque with the shorter stroke motor..if you plan on winding it up over 5 grand and holding it there any length of time,I'd say the shorter stroke motor will live longer..I think the 427 is the one I'd choose out of the 3 listed..
    If your going to lug it under heavy loads in gumbo mud,the "stroker" motor will make more low end power,if its cammed right..and the more cubes the better.. :crazy:
     
  4. BranndonC

    BranndonC 3/4 ton status

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    everything i've heard is mud need RPM's so maybe go with the 427 and build it for RPM's.
     
  5. 3 on the tree

    3 on the tree 1/2 ton status

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    I say build the 427. I think they have a stouter bottom end than the 454 to start with. If you're not happy with the power it puts out, plumb it for a shot of nitrous!
     
  6. 76zimmer

    76zimmer Flyin Rat Premium Member GMOTM Winner

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    Get a 454 crank and put in the 427 block to get 454. Bores are the same, the difference is in the stroke. Rods journals are the same also. I don't think you need to clearance the block to do it. Check your oil pan rails, and measure for extra 1/4 in clearance for the longer stroke. (1/8" longer stroke on the bottom end, plus 1/8 clearance)
     
  7. muddybuddy

    muddybuddy 3/4 ton status

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    get a 14b FF to handle the power :D i voted 383 cuz its the lightest out of all of them, and when built can produce tons of power. but i guess nothing can beat the torque of a bbc.
     
  8. u2slow

    u2slow 1/2 ton status

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    Build the 427 if you're on a budget.

    If you're going to bother upgrading the crank.... go bigger than 454. :D
     
  9. oneofthefewbmx

    oneofthefewbmx 1/2 ton status

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    383 all the way....the torque you want...and if you build it right it can wrap out to any rpm you want....ive only got mine up to 6800 but that is cuz my carb is a piece of ****...454 is prettty heavy and if your worried about rpms then that is not wat you want. just my 2 cents
     
  10. stayaway

    stayaway Registered Member

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    I say big block all the way since you already have 2 427s
     
  11. beastofablaze

    beastofablaze 1/2 ton status

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    Build the 427... you have the parts and its a rare but badass motor that can rev high but also has plenty of grunt off idle.
     
  12. 89GMCSuburban

    89GMCSuburban 1/2 ton status

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    Wanna give me one of the 427's? :D
     
  13. 78Suburban

    78Suburban 1/2 ton status

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    holy crap dude, that is winding it out :laugh: :doah:
     
  14. OLD DAWG

    OLD DAWG 1/2 ton status

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    Don't forget to include gearing in the mix as well. More torque allows you to use higher gears therefore higher wheel speed for RPM used and mud flinging everywhere :D .
     
  15. Cornfield creations

    Cornfield creations 1/2 ton status

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    Living near the stripper pits of southern Indiana all we have is mud, the nice thick gooey kind. You gotta be able to spin them tires fast enough to keep them clean. Clogged treads means no go in the mud boggs. I say 427 with ARP bolts all the way!
     
  16. beastofablaze

    beastofablaze 1/2 ton status

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    In theory that is correct but it still doesn't explain why you don't see any deisels winning or even entering mud bogs.

    In the end you need hp more than tq when it comes to mud. tq is still important, just not as important.
     
  17. Corey 78K5

    Corey 78K5 1 ton status

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    You don't see diesels in mud bogs cause they don't turn the high rpm's like a gas motor does.
     
  18. beastofablaze

    beastofablaze 1/2 ton status

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    He was saying if you use a higher gear then tq can be important... i was trying to say is if that were true then we should see alot more diesels at mud bogs.

    when it comes right down to it diesels don't have enough hp and weigh too much. at least that is my opinion.
     
  19. jk3078

    jk3078 1/2 ton status

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    427 vs 454 vs 383

    Thanxs for the info! I normaly run under 5 grand in the mud as most pits up here get rutted out pretty bad and full throttel attacks in a 6k# truck is hard on parts and spines. :laugh: Could the 427 be built to handle 5-6 grand with out losing off idle torqe? This truck also sees alot of trails so low end power and smooth power delivery are neaded. Also I am planning a gear swap soon and was thinking 5.13s for 38.5 or 39.5 tires(4.10s kinda suck).Will this be to low when I get a big powerhouse? :D I dont rock crawl this truck much any more as I built the sub-buggy for that.Thanxs again!!

    POORBOYS OFFROAD! :wink1:
     
  20. destinbeachman

    destinbeachman 1/2 ton status

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    The 427 will rev as high as your wallet permits. :D A stock bottom end with aftermarket rod bolts should be good to 6 grand.I run tall gears in my truck even with my new 40's so I can get a ****load of tire speed and just got a doubler so I can still crawl it.No way I could run 4.10's and 40's without a ton of motor.Maybe stud the mains while you are at it and let 'er rip!
     

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