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  1. dgc333

    Can anyone explain BOV spring ratings to me?

    The BOV is referenced to the intake manifold so when the throttle is closed and manifold vacuum is created it opens releaving the up stream boost so the turbos don't see a shock and stop spinning. The spring keeps the BOV closed so you don't bleed off boost and needs to be sized to a little...
  2. dgc333

    PVC on a turbo: you guys might like this

    Any one see the Corvette Hot Rod Magazine had cut all the body off to see how much they could improve the performance with a weight reduction. They then took to gas powered leaf blowers and made a Hillbilly forced induction. Funny thing it actually worked. They picked up a few tenths with it.
  3. dgc333

    Supercharge Or Turbo?

    I have owned a turbo charged mopar continiously since May of 1985 when I got my first turbo Daytona. The single biggest disadvantage of an exhaust driven turbo compared to a crank shaft driven supercharger is turbo lag. It doesn't make any difference at what rpm the engine is turning at if there...
  4. dgc333

    Heads

    550 HP is right at the limit for a stock block and 600 is pushing it. You should be using billet main caps and a mains girdle at that more level in a stock block.
  5. dgc333

    Heads

    With the exception of the valve size and the small hump in the exhaust port for the air injection they are the same as the the early 340/360 heads. Whether that is adequate for your goals is another question.
  6. dgc333

    your take on BOV's and WG's

    You need a waste gate to control the level of boost from a turbo period. If the turbo only produced the desired boost at max rpm it would produce little or no boost below max rpm. You size the turbo to produce the desired boost low in the rpm range then use the waste gate to prevent over boost...
  7. dgc333

    Cost and special parts to turbo

    A lot of carb'd blow through turbo and supercharger systems place the entire carb in a box that is pressurized. By doing it this way you do not need a special carb, even vacuum secondary carbs will work in this type of system. For the fuel system all you need to do is get a fuel pump that you...
  8. dgc333

    K-car turbos

    Normally with blow through systems the carb goes inside a sealed box so the entire carb is at boost pressure then it doesn't make a difference if it's a mechanical or vacuum secondary.
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