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Thread: Horsepower Rumors

  1. #1
    pw_Tony
    What's the most horsepower someone, or anyone has made with Cast Iron OVAL factory heads on a BBC?
    My friend's tellin me he makes 700hp out of a 468BBC and stock way ported OVAL heads so I wasn't sure if I should put my BS boots on.
    So just wanted to hear some rumors? Anyone?

  2. #2
    lucky
    700 is not bull shit with factory heads ( squareports ) and a blower

  3. #3
    BrendellaJet
    HB Jet is making over 700 with cast ported heads on a 496 I believe....

  4. #4
    Blown 472
    HB Jet is making over 700 with cast ported heads on a 496 I believe....
    On a hot dyno.

  5. #5
    motormonkey
    If the ovals are somthing like bb2o extras

  6. #6
    SmokinLowriderSS
    700 is possible, but will entail a lot of good porting work, and very careful parts selection.

  7. #7
    BrendellaJet
    On a hot dyno.
    your jealousy isn't becoming. Fact of the matter is the enging kicks ass and propels his boat(s) to ranges where that power is needed to go those speeds, end of story.

  8. #8
    pw_Tony
    your jealousy isn't becoming. Fact of the matter is the enging kicks ass and propels his boat(s) to ranges where that power is needed to go those speeds, end of story.
    ????????

  9. #9
    MikeF
    Specs=>
    4.530" Bore x 4.000" Stroke = 515.8 CID BBC
    Brodix #3-Extra CNC'd by Brodix
    supposedly 13:1 CR, but only 155 cranking psi
    2 1/8 Headers
    RPM____TQ_____HP
    5500__613.4__642.3
    5600__610.6__651.0
    5700__605.8__657.5
    5800__607.6__671.0
    5900__606.3__681.1
    6000__601.8__687.5
    6100__596.9__693.2
    6200__590.6__697.2
    6300__584.6__701.2
    6400__574.7__700.3
    6500__565.5__699.9
    6600__555.6__698.2
    6700__543.0__692.6
    6800__536.7__694.9
    6900__527.4__692.8
    note=> i've had Brodix 3Extra CNC'd make 900+ HP
    on other Engine Combos
    another better matched Engine Combo was this Specs=>
    GM cast-iron oval Ports
    almost maxed-out 2.300/1.880 valves
    4.350" Bore x 4.250" Stroke = 505.3 CID
    9.478:1 actually CC's CompRatio w/ EXXON 992 prem pump gas
    Hooker Headers 2 1/8" x 32" Collectors= 3.500 x 18"
    165 cranking psi
    Holley HP-1050 Carb out-of-box
    RPM____TQ_____HP
    5500__602.6__631.0
    5600__608.8__649.1
    5700__604.2__655.7
    5800__603.6__666.6
    5900__597.5__671.2
    6000__590.5__674.6
    6100__584.0__678.3
    6200__577.4__681.6
    6300__571.3__685.3
    6400__566.0__689.7
    6500__562.2__695.8
    6600__558.9__702.4
    6700__554.7__707.6
    6800__546.8__707.9
    6900__532.9__700.1
    7000__518.4__690.9
    .................................................. ...
    Looks like it can be done.

  10. #10
    BrendellaJet
    ????????
    in response to the hot dyno comment.

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