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New engine advice

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Sparky87k5, Jun 16, 2001.

  1. Sparky87k5

    Sparky87k5 1/2 ton status

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    After towing my 24' travel trailer the last 2 years, I have decided I need better power. My present 383 (17,000 miles) is strong but not what I'm wanting. Past tow rigs have always used 454, 460 or 513 sized engines. I think I need a 427BB for reasonable power increase over the 383. Any advice on where I can get a good one built? I still want reasonable fuel mileage when not towing.

    87 K5, D60 & 14FF, 5 sp & NP208 & 383 stroker. Build it Bulletproof and take it fishing!
     
  2. Pugsley

    Pugsley 1/2 ton status

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    I'd go with a Goodwrench 454. The mileage between it and a 427 wouldn't be much different, and you'd be getting the awesome GM warranty.

    I'm so poor I can't even pay attention [​IMG]
    <A target="_blank" HREF=http://pugsley.alloffroad.com>http://pugsley.alloffroad.com</A>
     
  3. Andreas

    Andreas 1/2 ton status

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    Ditto. If you´re towing a lot you need the torque producing longer stroke of a 454. Well...."need" isn´t the right word but I think you´ll be happier with it. Or you could build a 434 smallblock[​IMG] .

    Andreas

    406cui of pure sh*t[​IMG]
    <A target="_blank" HREF=http://hem.passagen.se/znus/>http://hem.passagen.se/znus/</A>
     
  4. Sparky87k5

    Sparky87k5 1/2 ton status

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    The problem I'm having with a small block is inorder to build the power needed, I have to keep RPM's above 3400 and then I'm building a lot of heat, both oil & water temp. Big blocks should make enough power to overcome this. I think I'm expecting too much from the 383SB, always had BB before.

    87 K5, D60 & 14FF, 5 sp & NP208 & 383 stroker. Build it Bulletproof and take it fishing!
     
  5. '73 K5

    '73 K5 1/2 ton status

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    If you have enough $$$$, this is the way to go: <A target="_blank" HREF=http://www.beckracingengines.com>http://www.beckracingengines.com</A> Check out their Pro Tow 454. Awesome motors!

    '73 K5
    Chevy good...Ford bad
     
  6. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    So what are you going to do with the 383?

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
     
  7. ChevyCaGal

    ChevyCaGal 3/4 ton status

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    He's going to give to me because I am such a nice person and so wonderful........
    Ok sorry I made myself laugh there on that one! LOL

    Maybe he'll have to buy another Blazer to keep it in....? [​IMG]



    "Suck Fumes Ford Boy"
    "I love my country, I fear my government"
    <A target="_blank" HREF=http://www.chevycagal.homestead.com/steph.html>http://www.chevycagal.homestead.com/steph.html</A>
     
  8. Derf00

    Derf00 1/2 ton status

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  9. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Hey it can't hurt to ask! [​IMG]

    Rene...wiping drool off[​IMG]

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
     
  10. Andreas

    Andreas 1/2 ton status

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    Sure, a bb 427 will produce more torque than a sb 383, but not that much. The 427 is very oversquare, making it suitable as a high revver performance engine. Your 383 has 3.75" stroke, a 427 has 3.76" stroke. Look at the Beck racing engines page posted. Their 383 produces 446 ft.lbs @ 4000rpm while the 454 produces 488 ft.lbs @ 4200rpm. Not sure about the torque curve but I expect them to be very flat on both engines. A measly 42 ft.lbs peak torque increase with 71 cubes more, and at 200rpms higher on the bb. If you want BIG mountainmovin´ 6-700 ft.lbs torque you need to regear or a bb 502...or a blower...or all three [​IMG] Maybe a Duramax diesel?[​IMG]

    /Andreas

    406cui of pure sh*t[​IMG]
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  11. '73 K5

    '73 K5 1/2 ton status

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    Yea....what are you doing with the old engine?

    '73 K5
    Chevy good...Ford bad
     
  12. Sparky87k5

    Sparky87k5 1/2 ton status

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    Rene, if I install BB, then you're first in line for it when I sell. You're only 45 minutes away from me. Have been giving some serious consideration to Sallee's Chev 454 TREME 4X4 ENGINE.
    www.sallee-chevrolet.com/ChevyBigBlockV8s/454_xtreme_4x4.html
    I hear some good advice but also realize I would never be happy unless I have an abundance of torque that only a BB can provide. Cheaper then buying a new truck by far, and nothing can replace this K5. Too many good memories fishing.

    87 K5, D60 & 14FF, 5 sp & NP208 & 383 stroker. Build it Bulletproof and take it fishing!
     
  13. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Well with my luck I'll be broker than a ford on race day but keep me posted anyways!

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
     
  14. bigk

    bigk 1/2 ton status

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    If the best memories of your K5 only involve fishing, you need to learn how to fold up that back seat!
     
  15. CV202

    CV202 1/2 ton status

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    bigk---LMAO!!

    Why do people keep calling it a Bronco!!!!! [​IMG]
     
  16. Sparky87k5

    Sparky87k5 1/2 ton status

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    Appreciate your advice & comments. Will keep you posted on the outcome. I bought my first crate engine 350/300 & NV4500 from Sallee and found them to give fast, excellent service. Looked at Becks 454 & like it too, but shipping & cost start to add up. Sallee is looking good right now. Rene, I'll keep you in mind, both the 350/300 & the 383 might be for sale, real soon.

    87 K5, D60 & 14FF, 5 sp & NP208 & 383 stroker. Build it Bulletproof and take it fishing!
     
  17. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Thanks Sparky!

    Hopefully I might be able to afford it at the time.

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
     

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