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Thread: Cam selection, cam guru's help

  1. #1
    Senior Member MASTER BUILDER
    Join Date
    Oct 2003
    Posts
    144

    Cam selection, cam guru's help

    I am wondering if I have the right cam for my application.
    the engine: 436 cid ( 4.165 bore 4" stroke ) with heads that flow 355 cfm intake at .700
    cam I have:
    erson,
    intake lobe l. .450 / 278 duration
    exhaust lobe l. .450 / 284 duration
    rocker ratio 1.6
    106 lobe speperation
    Alcohol injection
    Drag only 1/4 mile
    2350 lb car
    gear 4.56 w 30" tire
    anybody have any idea?
    compression static 14.7-1

  2. #2
    Senior Member EXPERT BUILDER
    Join Date
    Jan 2007
    Location
    atwood,Ky
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    302
    way to small of a cam,my 388 had a comp 670 lift cam with 4/7 swap & it made alot of power. you have more motor than i had.best think to do is to call your favorite cam company tell them what you have & they will set you up.of coarse one of these guys on here could help you to there are some pretty smart fellas on here.good luck.

  3. #3
    Senior Member EXPERT BUILDER
    Join Date
    Aug 2007
    Location
    Orient, OH
    Posts
    384
    I am not a cam guru, but with that cam you are looking at .720 rocker arm lift. I am guessing the duration is at 50. I ran a cam very similar to yours in my 434 in our Super Street Nova and it worked great the car was 2850 pounds and ran a best of 9.44 @ 143 mph with 4.86 gearing...

    I hope this is helpful...
    Josh VanHorne

    1964 Chevy Nova
    Worlds quickest and fastest tow truck. (9.92 @ 137)

    http://static.racingjunk.com/63/ui/7...247837-479.jpg

    http://www.racingjunk.com/profile/211708

  4. #4
    Senior Member RACING JUNKIE jmarksdragster's Avatar
    Join Date
    Jul 2007
    Location
    Florida
    Posts
    635
    You will want about 6000 stall, turn it 7500ish and should run very low 9's at least, maybe some high 8's. Cam should be fine if you have the springs and pushrods to handle it.
    Mark Whitener
    http://racingfuelsystems.myfunforum.org
    __________

    Good work isn't cheap, and cheap work can't be good.


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