Blown big blocks

Discussion in 'Forced Induction Mopar' started by Mopar-Man, Nov 11, 2017.

  1. Mopar-Man

    Mopar-Man Big Block Better Burnout

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    Anybody here run a blower on a 470RB? I was going the tunnel ram route on some 240 Trickflows but now I am thinking... hmmm... I am at 10.5:1 compression which would be perfect for methanol. The issue I have is the stock block! Not sure I could detune it enough to keep from splitting it. NOT BUILDING A RACECAR although it does have RMVB 727 and 4000 8 inch converter, Dana 60 with 4.10 gears and CalTracs. Just a radical street car. Any setups you would care to share?
     
  2. bOb shingler

    bOb shingler Well-Known Member

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    put a main girdle on it.
     
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    • BigBlockMopar

      BigBlockMopar BigBlockMember

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      I've got a somewhat stranded 496ci blower motor on the stand that I've been building over the years.
      No real planning was involved, just using the parts I luckily ended up with over time. Street use mainly.
      Only the cam has been chosen by Dwayne Porter from PHR.

      I think I would worry a bit about the 4000 stall when you have enough torque to reverse spin a small planet at lower rpms.
       
      Last edited: Jan 8, 2018
    • chargd72

      chargd72 Well-Known Member

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      I like using methanol as more of a safety measure. At 10.5:1 any hiccup at all in the meth system while under boost and you're toast.
       
    • jimjimjimmy

      jimjimjimmy lobsterman FABO Gold Member

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      agree
       
    • TOY440

      TOY440 Member

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      A mate of mine here down under made 1500 hp with a standard block. Was grout filled though, engine has been running for the past 8 years
       
    • famous bob

      famous bob mopar misfit

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      Wondering how hard and how often he really hammers it for all its worth. I wouldn't think it would last a season in a dragrace car .
      idle to 7000 and hold it for 8-10 seconds every time u start it ??????????
       
      Last edited: Apr 1, 2018
    • bOb shingler

      bOb shingler Well-Known Member

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      how light is your hotrod? what size tires in the back?
       
    • TOY440

      TOY440 Member

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      Races about 6-8 full weekend meets a year, plus street duties, 8 second car currently in a Bee
       
    • famous bob

      famous bob mopar misfit

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      that ain`t like hammering one every weekend for 14 years !
       
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