Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

How much HP is needed for 39.5 boggers??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 77Blazer, Oct 11, 2001.

  1. 77Blazer

    77Blazer 1/2 ton status

    Joined:
    Aug 13, 2001
    Posts:
    197
    Likes Received:
    0
    Location:
    Long beach CA
    this summer ill prolly be going up to the 39.5x18 boggers what kind of HP will i need to push em?? Right now im sittn on 38.5x14.5 and my 350 (headers,dual exhaust, & intake) does alright but i want some more power. So what will i be able to do with around 1500 dollar budget?

    350, sm465, NP205, 14ff w/detroit, yucky ten bolt 4" springs,38.5x14.5 swampers
    <a target="_blank" href=http://www.planettribes.com/theden/gontw/nsig.jpg>http://www.planettribes.com/theden/gontw/nsig.jpg</a>
     
  2. Pure Insanity

    Pure Insanity 1/2 ton status

    Joined:
    Mar 17, 2001
    Posts:
    4,579
    Likes Received:
    0
    Location:
    Dade City, Florida
    You can make a 5 horse Briggs &amp; Stratton pull 44's with the right gears. [​IMG]

    You should be running a 4.88-5.13 gear for 38-39s. Just a gear swap will make a huge difference.

    $1500 would be best spent on gears IMO, unless your motor is tired.

    If ya can't stop.......Smile as you go under! [​IMG]
     
  3. zakk

    zakk 1/2 ton status

    Joined:
    Sep 21, 2001
    Posts:
    4,762
    Likes Received:
    0
    Location:
    San Jose CA
    I second that. gears should be the first step. but you got that granny first...how much lower you wanna go? I think with that tranny, 4.56 or 4.88 would be plenty. if your 350 is as tired as my 400, you need a GM crate engine. you can get a 240 hp brand new 350 for less than $1300...just my .02

    -Zakk
    '77 K5 SB 400 TH350 NP203 p/t 6" Lift D60 14BFF 4.10's 36"Wrangler II's

    [​IMG] MOAB 2002 OR BUST!! [​IMG]
     
  4. 77Blazer

    77Blazer 1/2 ton status

    Joined:
    Aug 13, 2001
    Posts:
    197
    Likes Received:
    0
    Location:
    Long beach CA
    yeah im already riding on 4.56's so its just my tired ol 350 im worrying about.

    350, sm465, NP205, 14ff w/detroit, yucky ten bolt 4" springs,38.5x14.5 swampers
    <a target="_blank" href=http://www.planettribes.com/theden/gontw/nsig.jpg>http://www.planettribes.com/theden/gontw/nsig.jpg</a>
     
  5. chevrules

    chevrules 1/2 ton status

    Joined:
    Aug 26, 2001
    Posts:
    127
    Likes Received:
    0
    Location:
    Canada
    I think a big block is what you need....always worked for me.But you can probably build up your 350 for less than buying a BB.

    chevrules...always has and always will
     
  6. RedDwarf

    RedDwarf 1/2 ton status

    Joined:
    May 9, 2001
    Posts:
    816
    Likes Received:
    0
    Location:
    North Central Florida
    If you've got 275HP/350Ft-lbs, you'll be okay.

    Do a rebuild with Vortec heads and a Comp Cams Xtreme Energy 4x4 cam and you'll be there.

    1500 might cover that with a few pennies left over for a couple Flowmasters.

    Still Poundin' "pavment" after all these years!!! [​IMG]
     
  7. chevyboy24598

    chevyboy24598 1/2 ton status

    Joined:
    Jul 17, 2001
    Posts:
    212
    Likes Received:
    0
    Location:
    Va, USA
    For $1,500, I'd go for:
    Comp Xtreme Energy 294 $96.99
    Eldebrock Super Victor $199.99
    Iron Eagle Heads $1,000
    total-----------------------$1,296.98


    Rust=Good
    <a target="_blank" href=http://www.bodatious.com> bodatious </a>
    <a target="_blank" href=http://www.mudboggingfun.homestead.com> my site </a>
     
  8. 84_Chevy_K10

    84_Chevy_K10 Banned

    Joined:
    May 30, 2001
    Posts:
    17,669
    Likes Received:
    0
    Location:
    IL, USA
    Don't bother with a crate engine if you can build your own. Build it for yourself and you can custom tailor it to your application and it'll be cheaper dollars per hp.

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     
  9. CaptCrunch

    CaptCrunch 1/2 ton status

    Joined:
    Feb 2, 2001
    Posts:
    3,596
    Likes Received:
    1
    Location:
    Minnesota
    I assume you like the mudpits... so IMO BBC is the only way to go. It isn't just trying to keep those things moving down the road (which can take some umf) but it is trying to keep those suckers whipping mud left and right at 5 grand in the pit.

    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
    <a target="_blank" href=http://coloradok5.com/gallery/captcrunch>http://coloradok5.com/gallery/captcrunch</a>
     
  10. Blue85

    Blue85 Troll Premium Member

    Joined:
    Jul 26, 2000
    Posts:
    9,088
    Likes Received:
    487
    Location:
    Grand Rapids area
    How much horsepower will you need?

    Well,

    All of it. [​IMG]

    <font color=green>Does a Dyslexic Insomniac Athiest lay awake at night wondering if there's really a Dog?</font color=green>
     
  11. 77Blazer

    77Blazer 1/2 ton status

    Joined:
    Aug 13, 2001
    Posts:
    197
    Likes Received:
    0
    Location:
    Long beach CA
    so how much should i be looking at for say a rebuilt 454? or what would it take to build a 383?

    350, sm465, NP205, 14ff w/detroit, yucky ten bolt 4" springs,38.5x14.5 swampers
    <a target="_blank" href=http://www.planettribes.com/theden/gontw/nsig.jpg>http://www.planettribes.com/theden/gontw/nsig.jpg</a>
     
  12. thatK30guy

    thatK30guy 1 ton status Premium Member

    Joined:
    Jan 12, 2001
    Posts:
    32,076
    Likes Received:
    55
    Location:
    .
    The prices vary. I cannot say how much. [​IMG] Everybody is different on their own build ups and everybody's prices will be different too. It all depends on how radical you want to get. [​IMG]

    BTW, take this idea into consideration: buy and build it ONCE, and be done with it. In other words, go with a BIG BLOCK. In the long run, you will be much happier with it. [​IMG]

    <font color=red>I'm a "black top mudder"!!!</font color=red>

    <a target="_blank" href=http://coloradok5.com/gallery/thatK30guy>The K30 Collection</a>
     
  13. 84_Chevy_K10

    84_Chevy_K10 Banned

    Joined:
    May 30, 2001
    Posts:
    17,669
    Likes Received:
    0
    Location:
    IL, USA
    Your 10 bolt front won't take a big block for long. My friends run up to 44" tires on 1/2 and 3/4 ton axles and I've yet to see one break, but my other friend has a 454 in his truck with 39.5" Boggers and he breaks his D44 regularly.

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     
  14. 77Blazer

    77Blazer 1/2 ton status

    Joined:
    Aug 13, 2001
    Posts:
    197
    Likes Received:
    0
    Location:
    Long beach CA
    well the D60 will be in b4 the engine anyway so thats not a worry.

    350, sm465, NP205, 14ff w/detroit, yucky ten bolt 4" springs,38.5x14.5 swampers
    <a target="_blank" href=http://www.planettribes.com/theden/gontw/nsig.jpg>http://www.planettribes.com/theden/gontw/nsig.jpg</a>
     
  15. 77Blazer

    77Blazer 1/2 ton status

    Joined:
    Aug 13, 2001
    Posts:
    197
    Likes Received:
    0
    Location:
    Long beach CA
    ok so how much should i pay for 400 ponies worth of engine?

    350, sm465, NP205, 14ff w/detroit, yucky ten bolt 4" springs,38.5x14.5 swampers
    <a target="_blank" href=http://www.planettribes.com/theden/gontw/nsig.jpg>http://www.planettribes.com/theden/gontw/nsig.jpg</a>
     

Share This Page