how much HP can be gotten out of the 350 SBB

Discussion in 'Small Block Tech' started by lostGS, Mar 24, 2009.

  1. Turbo455

    Turbo455 James

    I will give you a general formula for calculating HP. First some background. Atmosphere is 14.7 so I use 15 as my divisor just to be on the conservative side. The theory is that every time you double atmosphere(with boost) you double the size of the motor doubling the output. so you need to first get a multiplier and the formula is this

    boost psi divided by atmosphere or in your case 8/15=.53 so your multiplier is .53

    Next you multiply .53 times your base HP or in your case .53*300=159

    next you add the 159 gained HP to the Base HP of 300 or 159+300 and get 459

    So the whole formula looks like this if b=base horsepower p=boost pressure

    (p/15+1)*b

    (8/15+1)*300
    (1.53)*300=459

    NOTE: This formula is only accurate if you can get the tune correct with the added airflow. and have no overlap issues with the cam. and don't forget those pesky detonation issues that come with turbo charging. PS I wouldn't use Hypers

    By the way turbo's also add massive torque this is because the same formula above will also work for your torque. I say put a water/alcohol injecter($300) on it and crank the boost up to 12-15 psi and now your looking at 550-600hp
     
    Last edited: Mar 27, 2009
  2. 71bskylarkk

    71bskylarkk Vroom Vroom.

    thanks for the formula James, thread turned out to have lotsa' useful info.
     
  3. christy staunto

    christy staunto Well-Known Member

    Hi Frank talking about hp what are the # on the motor JW built for you some time back ,I am still waiting to my free ride/drive been looking for you at a few of the local shows do you take it by work i am willing to stop to check it out for you ha ha:TU:
     
  4. Mart

    Mart Gold level member


    There you go......

    HAVE FUN and if it blows USE YOUR SPARES and go back out there.:TU:
     
  5. J.Staged

    J.Staged My Therapy...!!

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