My friends 496 Hydraulic Roller motor
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My friends 496 Hydraulic Roller motor

  1. #1
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    Default My friends 496 Hydraulic Roller motor

    Kinda neat making 657Hp and 672 tq out of an oval iron headed 496. 10/1 comp, Hydraulic roller, [email protected]. Dynoed at Owens racing Engines in Houston TX on a 902. Thats a lot of power on a street engine!
    Last edited by jungledave; 12-01-2009 at 07:12 PM. Reason: comp wrong

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    Senior Member Boat 405's Avatar
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    Thats awesome! Good job!. How much port work was done on the heads?
    Boat 405.

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    Quote Originally Posted by widowmaker View Post
    Thats awesome! Good job!. How much port work was done on the heads?
    Fully ported, but not huge.

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    Quote Originally Posted by jungledave View Post
    Fully ported, but not huge.
    Try putting a 2.300 intake in it and see what happens. The air velocity picks up substantially
    Need help finding this 1973 Sanger 18'6" bubble deck mahogany bottom and stringers I was living in Pomona when I sold her in 1979. Just wonder if she still exists

    Update Found my old Sanger 12/7/14 in Reno.

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    Quote Originally Posted by jungledave View Post
    Fully ported, but not huge.
    Mark Jones puts alot of port work/time into those heads....always impressed by his ratings. He is Picasso with a set of 781 or 049's
    "Pain is a figment of your Imagination"

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    Quote Originally Posted by jungledave View Post
    Kinda neat making 657Hp and 672 tq out of an oval iron headed 496. 10.5 comp, Hydraulic roller, [email protected]. Dynoed at Owens racing Engines in Houston TX on a 902. Thats a lot of power on a street engine!
    Correction the motor is a 10 to 1 on the compression.

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    Quote Originally Posted by Notalent View Post
    Mark Jones puts alot of port work/time into those heads....always impressed by his ratings. He is Picasso with a set of 781 or 049's
    Ya, he's pretty much got them figured out.

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    I've got a couple of sets of these heads, what does he charge to do a set?

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    Quote Originally Posted by Jspeeddemon View Post
    I've got a couple of sets of these heads, what does he charge to do a set?
    Mark is so busy he only has time to port heads for his motors. He Does do valve jobs on ocasion. My 454 made 557 with 049s with Marks valve job and my port work without the best tune. My poor tuning, not Marks. I'm trying to sell the motor.

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    I've got a couple of oval port sets that I will sell if someone is looking for a set.

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