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  1. #1
    Rorry Calhoon

    How big can a SBC be streeeetched?

    Just read the article in this months Car and Driver about Dick Guldstrand working over a 50th anniversary vette. He stroked it 4.0 and bored it 4.1 to make 422 Cu In. They call it a 427. WOW But don't they usually use a de-stroked BBC to achieve a 427? They claim 500 BHP and 520 Twist. A pair in a 30 footer would be sweeeet. Whats your thoughts.
    Last edited by Rorry Calhoon; 03-17-2003 at 10:45 PM.

  2. #2
    My Boats:
    29 Fountain
    Join Date
    Jul 2001
    oshawa ontario
    I  Voted
    Just yesterday I saw a thing on Hot Rod TV where they had a 454 inch smallblock chevy.

  3. #3
    Rob VIP Member Strip Poker 388's Avatar
    My Boats:
    Hustler 388
    Join Date
    Aug 2001
    I saw a build up a few years back in Hot Rod a 500ci small block. they had to offset bore the block. I think it was Reher Morision made alittle over 1000hp.the rpm was around 8800 . the bore was over squar so prob one of those dyno test mules just for the mag.One of my buddys thats running the street car shootouts is running a 478ci small block ,Rockett block made 780 a few stages of nos.To get the power your talking about its going to be above 6000rpm.

    Boost makes up for Cubic Inchs

  4. #4 Charter Member Mrgoodwrench's Avatar
    My Boats:
    1998 American Offshore 2600
    Join Date
    Oct 2000
    LBC, So Cal. Where else?
    Bill Mitchell racing engines make a kit for a 427 small block.

  5. #5
    Official OSO boat whore Charter Member
    My Boats:
    8' row boat
    Join Date
    Oct 2000
    Mequon, WI
    454 with a stock block is a major stretch. However, I believe that Merlin has a block that makes this more feasible.

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