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Thread: 4.8 hp

  1. #1
    Join Date
    Nov 2009
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    Spring, TX
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    4.8 hp

    whats the usuall horsepower on a stock 4.8

  2. #2
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  3. #3
    Join Date
    Feb 2007
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    Quote Originally Posted by 2k5Squirrel View Post
    220ish
    That's to the wheels and I think it's around 285 at the crank depending upon the year.

    2004 Silverado Crew Cab, forged iron 5.7, STS w/MP turbo, 10+ psi, FMIC, Tial 50mm BOV, Vic Jr, Snow performance meth, MTI Stealth cam .220/.220 .581/.581 115lsa, Comp chromoly pushrods, Yank TT3000 stall, LS1 Efans, 160 tstat, Trucool 40k trans cooler, 60# injectors, Walbro fuel pump, Patriot springs, Built 4l65E w/billet input & output shafts, Eaton posi, SD tuned...all installed by Klein North Automotive

  4. #4
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    Honeywood, Ontario
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    There up over 300 (or at 300) in the 07+. I think.
    2006 Silverado
    Little Black Bitch

  5. #5
    Join Date
    May 2008
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    Crowder, OK
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    My 5.3 (LMG) is only 310 or 315

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  6. #6
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    Jun 2009
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    Glennville
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    07 and up is 295 at the crank
    07classic and below is 285 at the crank

    5/9 mchgys\belltech\boss 330\streetscene\reflexxion\flowmasters\servos\tune

    Cammed,Stalled,lts,ory,elec cutout, 4.56,transgo,servos,flowstoppers,

    soon to come a little shot of nitrous

  7. #7
    Join Date
    Nov 2007
    Location
    Pittsburgh, PA
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    the 02 4.8 i have was rated at 275hp and 285 torque

    add cam and boost and you have triple that output
    2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
    2002 Silverado - 427Lsx w/ Twin gt4202s
    2010 Silverado crewcab Z71 - 5.3litre w/ procharger
    2000 Wrangler - 5.3litre with some stance
    2014 Xsport- 3.5 Eco boost
    412 Motorsports

    it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference

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