Cam selection for e85 505 BBC
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Cam selection for e85 505 BBC

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    Senior Member jrider44's Avatar
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    Default Cam selection for e85 505 BBC

    I'm building a 505 e85 big block Chevy and I need to select a cam. 4.350 bore, 4.250 stroke, 38cc dome piston approx 12.5:1, ported(cleaned up rough cast in ports and chambers) 049 iron heads with 2.25 intake and 1.88 exhaust valves, Victor Jr intake, Mark Sullens e85 converted 850 Holley, logs, snails and 4" exhaust, I enlarged outlet of snails from 2 7/8" to 4". I want to run the most aggressive cam I can without having reversion problems. Thinking the Comp Cam 11-451-8 Xtreme Marine cam. Would this cam be a good choice for a shelf cam? Any other suggestions or input for a shelf cam?

    Comp Cam 11-451-8 Xtreme Marine cam
    RPM Range: 2200 to 5800
    Intake Valve Lift: .547
    Exhaust Valve Lift: .547
    Advertised Intake Duration: 284
    Advertised Exhaust Duration: 290
    Intake Duration @ .050": 230
    Exhaust Duration @ .050": 236
    Lobe Separation: 112°
    Last edited by jrider44; 04-14-2014 at 10:31 AM.
    1978 Hawaiian Party Cruiser
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    The cam lets stuff in and gets it out, depending on what the ported heads flow we can use those numbers to properly cam the engine. Do you have the flow numbers?
    Chris Straub
    Straub Technologies

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

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    Senior Member jrider44's Avatar
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    Quote Originally Posted by cstraub View Post
    The cam lets stuff in and gets it out, depending on what the ported heads flow we can use those numbers to properly cam the engine. Do you have the flow numbers?
    Sorry, I don't have any numbers. Bought the heads second hand...probably not much more than cleaning up rough cast ports and chambers. I'll edit first post. Thanks for the response
    1978 Hawaiian Party Cruiser
    Stevens V-drive(sold to bbollig55)
    Spico V-drive

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    Senior Member jrider44's Avatar
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    Would this work? Really don't think so but thought I'd ask. Any recommendations or opinions/thoughts on this or my first post would be much appreciated.
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    1978 Hawaiian Party Cruiser
    Stevens V-drive(sold to bbollig55)
    Spico V-drive

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    Senior Member lilrick's Avatar
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    Quote Originally Posted by cstraub View Post
    The cam lets stuff in and gets it out, depending on what the ported heads flow we can use those numbers to properly cam the engine. Do you have the flow numbers?
    I have no idea how much it costs to ship heads nowadays, but do you offer that service mr. Straub? And if so how much? I live in ca.

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    Some guy obnoxious001's Avatar
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    Quote Originally Posted by lilrick View Post
    I have no idea how much it costs to ship heads nowadays, but do you offer that service mr. Straub? And if so how much? I live in ca.
    Not taking anything away from Chris, but if you only want to get yours flowed it would not be cost effective to ship to Tennessee when there are any number of places in So Cal who can flow heads for you for way less than shipping would cost. The guy I used to use has moved out to Thousand Oaks area, but have some others I can think off off the top of my head that are closer to you.

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    Senior Member lilrick's Avatar
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    Quote Originally Posted by obnoxious001 View Post
    Not taking anything away from Chris, but if you only want to get yours flowed it would not be cost effective to ship to Tennessee when there are any number of places in So Cal who can flow heads for you for way less than shipping would cost. The guy I used to use has moved out to Thousand Oaks area, but have some others I can think off off the top of my head that are closer to you.
    Thanks barry. I'm sure you re right and Chris will probably agree. So, would you mind PMing me some info? Thanks. I'm looking for a winter project to keep me busy .


    Edit: ooooops, sorry for the thread jack!
    Last edited by lilrick; 05-01-2014 at 12:39 AM.

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    DR. J'S in Anahiem,ca

    last time I. Talked to Bryce it was around 75.00
    he is a good guy

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    Quote Originally Posted by lilrick View Post
    I have no idea how much it costs to ship heads nowadays, but do you offer that service mr. Straub? And if so how much? I live in ca.
    We get $90 to flow the 2 intake ports and 2 exhaust ports. You get a lift range sheet from .100 to .900 on your heads. Where are you in Cali? I may have a customer or know someone that can do it out there.
    Chris Straub
    Straub Technologies

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

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    Senior Member lilrick's Avatar
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    Oh yah, forgot about dr. J's. I'll go see him.

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