302 marine camshaft questions
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302 marine camshaft questions

  1. #1
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    Default 302 marine camshaft questions

    Have a small block ford setup is
    edelbrock victor jr heads
    parker funnelweb single plane intake
    procharger 8-10lbs of boost
    750cfm holley double pumper

    What do you guys think about this cam with this setup. Main question is am i going to have water reversion problems? And does this look like a good cam for my setup?

    Cam Style: Hydraulic roller tappet
    Basic Operating RPM Range: 2,500-6,000
    Intake Duration at 050 inch Lift: 224
    Exhaust Duration at 050 inch Lift: 232 Duration at 050 inch Lift: 224 int./232 exh.
    Advertised Duration: 293 int./290 exh. Intake Valve Lift with Factory Rocker Arm Ratio: 0.542 in. Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.563 in. Valve Lift with Factory Rocker Arm Ratio: 0.542 int./0.563 exh. lift Lobe Separation (degrees): 112 Intake Valve Lash: 0.000 in. Exhaust Valve Lash: 0.000 in. Computer-Controlled Compatible: No

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  3. #2
    Senior Member Hass828's Avatar
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    Quote Originally Posted by onefastt View Post
    Have a small block ford setup is
    edelbrock victor jr heads
    parker funnelweb single plane intake
    procharger 8-10lbs of boost
    750cfm holley double pumper

    What do you guys think about this cam with this setup. Main question is am i going to have water reversion problems? And does this look like a good cam for my setup?

    Cam Style: Hydraulic roller tappet
    Basic Operating RPM Range: 2,500-6,000
    Intake Duration at 050 inch Lift: 224
    Exhaust Duration at 050 inch Lift: 232 Duration at 050 inch Lift: 224 int./232 exh.
    Advertised Duration: 293 int./290 exh. Intake Valve Lift with Factory Rocker Arm Ratio: 0.542 in. Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.563 in. Valve Lift with Factory Rocker Arm Ratio: 0.542 int./0.563 exh. lift Lobe Separation (degrees): 112 Intake Valve Lash: 0.000 in. Exhaust Valve Lash: 0.000 in. Computer-Controlled Compatible: No
    Probably have better luck with this ? over in the dyno section. Or PM Chris Straub.

  4. #3
    Senior Member GT Jets's Avatar
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    Quote Originally Posted by onefastt View Post
    Have a small block ford setup is
    edelbrock victor jr heads
    parker funnelweb single plane intake
    procharger 8-10lbs of boost
    750cfm holley double pumper

    What do you guys think about this cam with this setup. Main question is am i going to have water reversion problems? And does this look like a good cam for my setup?

    Cam Style: Hydraulic roller tappet
    Basic Operating RPM Range: 2,500-6,000
    Intake Duration at 050 inch Lift: 224
    Exhaust Duration at 050 inch Lift: 232 Duration at 050 inch Lift: 224 int./232 exh.
    Advertised Duration: 293 int./290 exh. Intake Valve Lift with Factory Rocker Arm Ratio: 0.542 in. Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.563 in. Valve Lift with Factory Rocker Arm Ratio: 0.542 int./0.563 exh. lift Lobe Separation (degrees): 112 Intake Valve Lash: 0.000 in. Exhaust Valve Lash: 0.000 in. Computer-Controlled Compatible: No
    Not with a positive displacement supercharger, IMHO as long as it has a faily high idle pressure (numerically low vacuum numbers) you should be cool...

    GT
    GT


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    Put a 300 on the back of it, Flywheel it and a nosecone. $15,000 later you'll have a 65 mph pile of shit......

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  6. #4
    Senior Member Hass828's Avatar
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    that small of a cam with that wide of a lobe sep angle you shouldnt have any problems with reversion.

  7. #5
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    Way to much induction for that 302. This thing won't need much cam at all. Those victors are at least 210cc runners. this combo needs to see 8K to be happy. If your going to run it it will need a tiny camshaft. Even with this it isn't going to be a fun ride.
    Chris Straub
    Straub Technologies

    3HP is an A$$ Whooping!!! JW

  8. #6
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    Knowing what kind of boat its going in would help, but that cam is fine. Its a pretty mild cam, LSA of 112 doesn't usuallt cause any reversion issues. (depending on exhaust) With the small motor, it should run well, and like to rev.

    Are you looking to make power toward the 6K end ?

    What kind of exhaust do you have on the boat.

  9. #7
    I'm famous ! Lucky's Avatar
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    Quote Originally Posted by 5325user View Post
    Knowing what kind of boat its going in would help, but that cam is fine. Its a pretty mild cam, LSA of 112 doesn't usuallt cause any reversion issues. (depending on exhaust) With the small motor, it should run well, and like to rev.

    Are you looking to make power toward the 6K end ?

    What kind of exhaust do you have on the boat.
    I was told anything over 110 lc Ideally 114 -
    " my carbon footprint is gonna kick your green ass"


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  10. #8
    cfm
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    I must have missed:

    what kind of boat
    what kind of drive system
    what type of exhaust and tailpipes
    what rpm we are looking to make power at

    Engine details without boat details doesn't give us anything to by.

  11. #9
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    Quote Originally Posted by Lucky View Post
    I was told anything over 110 lc Ideally 114 -
    Thats the pretty general rule of thumb. Some exceptions, but it usually works with that number.

  12. #10
    Already miss the 310/562 2manymustangs's Avatar
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    Quote Originally Posted by onefastt View Post
    Have a small block ford setup is
    edelbrock victor jr heads
    parker funnelweb single plane intake
    procharger 8-10lbs of boost
    750cfm holley double pumper

    What do you guys think about this cam with this setup. Main question is am i going to have water reversion problems? And does this look like a good cam for my setup?

    Cam Style: Hydraulic roller tappet
    Basic Operating RPM Range: 2,500-6,000
    Intake Duration at 050 inch Lift: 224
    Exhaust Duration at 050 inch Lift: 232 Duration at 050 inch Lift: 224 int./232 exh.
    Advertised Duration: 293 int./290 exh. Intake Valve Lift with Factory Rocker Arm Ratio: 0.542 in. Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.563 in. Valve Lift with Factory Rocker Arm Ratio: 0.542 int./0.563 exh. lift Lobe Separation (degrees): 112 Intake Valve Lash: 0.000 in. Exhaust Valve Lash: 0.000 in. Computer-Controlled Compatible: No

    For an out of the box cam (not a custom grind) and for what your describing I would look at a FMS E-303... Its a nice cam for a low boost 5.0, I have seen many run very well... If you want the most out of your setup get a custom cam specific to your application... Trust straub...

    What kind of boat / drive?

    E-303 hydraulic roller specs, if your engine is not a roller block the conversion is cheap and easy:

    cam lift.311 int exh .311
    valve lift .498 int exh .498
    max lift intake 110* exhaust 110*
    valve setting. .000 intake exhaust .000

    cam timing @.004 tappet lift
    intake opens 28* btdc closes at 74* abdc duration is 282
    exhaust opens 68*bbdc closes 34* atdc duration 282

    cam timing @.050 tappet lift
    intake opens at 0* btdc closes 40*abdc duration 220
    exhaust opens 40* bbdc closes 0* atdc duration 220
    Last edited by 2manymustangs; 01-13-2010 at 05:48 PM.
    Pat Eason, the voice of reason...

  13. #11
    Hat
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    Default Lobe centers

    The wider lobe centers help keep the blowers from losing a lot of manifold air pressure during overlap, when both valves are open, near TDC at the end of the exhaust stroke.....

  14. #12
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    Would this be a better cam?
    Cam StyleHydraulic roller tappet
    Basic Operating RPM Range2,000-5,500
    Intake Duration at 050 inch Lift 221
    Exhaust Duration at 050 inch Lift225
    Duration at 050 inch Lift 221 int./225 exh.
    Advertised Intake Duration 283
    Advertised Exhaust Duration291
    Advertised Duration 283 int./291 exh.
    Intake Valve Lift with Factory Rocker Arm Ratio 0.499 in.
    Exhaust Valve Lift with Factory Rocker Arm Ratio0.510 in.
    Valve Lift with Factory Rocker Arm Ratio 0.499 int./0.510 exh. lift
    Lobe Separation (degrees)112
    Intake Valve Lash0.000 in.
    Exhaust Valve Lash0.000 in.
    Computer-Controlled CompatibleYes
    Last edited by onefastt; 03-04-2010 at 06:33 PM.

  15. #13
    Senior Member stoker2001's Avatar
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    Quote Originally Posted by onefastt View Post
    Would this be a better cam?
    Cam StyleHydraulic roller tappet
    Basic Operating RPM Range2,000-5,500
    Intake Duration at 050 inch Lift 221
    Exhaust Duration at 050 inch Lift225
    Duration at 050 inch Lift 221 int./225 exh.
    Advertised Intake Duration 283
    Advertised Exhaust Duration291
    Advertised Duration 283 int./291 exh.
    Intake Valve Lift with Factory Rocker Arm Ratio 0.499 in.
    Exhaust Valve Lift with Factory Rocker Arm Ratio0.510 in.
    Valve Lift with Factory Rocker Arm Ratio 0.499 int./0.510 exh. lift
    Lobe Separation (degrees)112
    Intake Valve Lash0.000 in.
    Exhaust Valve Lash0.000 in.
    Computer-Controlled CompatibleYes
    I WOULD TAKE CSTRAUBs advice
    I ALSO highly recommend Jay Allen at www.camshaftsinnovation.com
    he is very partial to old school SBFs 8.2"(289 and 302)
    I had him do a custom ground hyd billet roller in my 302 (with a little stroke)
    This cam combo requires the Comp retrofit link bar hyd roller lifters in the early blocks (little pricey) but worth every penny
    This thing idles like a dream and the power is very street friendly
    setup for cornering,but still runs 11.50s with pump fuel and 3250# with fat driver and tall 3.25 rear gear
    Whacker Smacker M/E #561 IHBA "first looser"champ 2006&2007&Sportsman Driver of the Year

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