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Discussion Starter #1 (Edited)
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°
 

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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?
 

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Discussion Starter #3
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:)
 

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Discussion Starter #4
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.
00u0u_9XUuH9wo3lg_600x450.jpg
 

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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?
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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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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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!
 

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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.
 
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