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Author Topic:   Camel hump Runner Size? and some info?
hobby10k
Dirt Freak

Total posts: 226
posted January 17, 2005 08:03 AM  
Does anyone know what stock camel hump runners flow? And what do (app) hogged out ones flow? I am running camel humps and I guess have been hogged out, so I was just wondering.
Now I am running these on a restricted 2 brl engine(500 CFM holly)and an intake that is a Non emissions. I just want to know if hogged out camel humps are too big of runners for this set up? I have been told to run smaller runners that it actually gives more power with this set up?
Now how much better are the canadian intakes vs. the non emission intakes?

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RACEINMUD
Dirt Freak

Total posts: 323
posted January 17, 2005 09:08 AM  
Look here if it works. http://users.erols.com/srweiss/tablehdc.htm

Race

leapinlizard
Dirt Freak

Total posts: 402
posted January 17, 2005 09:09 AM  
http://users.erols.com/srweiss/tablehdc.htm For head flow stock port.

Porting flow will be largely based on skill of the porter. As a very general rule you can expect around a 30 percent increase.

hobby10k
Dirt Freak

Total posts: 226
posted January 17, 2005 11:45 PM  
alright, well do you think way hogged out camel humps are too much for a restriced engine like that? or should I go to smogger heads?, and what about the intakes?

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racin78p
Dirt Freak

Total posts: 333
posted January 18, 2005 12:02 AM  
hobby10k, the best thing to do is get your heads flowed and see what they cc out to. We have a set of camels on a 355 right now with 1.94 intakes (4412 holley 2bl). I have ordered a set of dart iron eagles, 200cc intake runners and 64cc com., 2.02 intake/1.70 exhaust. I talked in depth with a couple of local engine builders and Charles at camcraft (sponsor here at the dirt forum) and this set up along with a custom cut cam will be MORE power than I will be able to plant in my Factory Stock. My engine builder really went nuts and hogged out the camels on our engine we have now, and I am sure it is too much for the 4412. Hope this helps some. Hey, I read a post of yours a day or two ago, saying you will be coming home soon. You in the desert wonderland? Been there and done that for the past 20 years off and on. Keep your head down and bring it home safe! Race on.

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racin78p
if it ain't fun, then don't run

hobby10k
Dirt Freak

Total posts: 226
posted January 18, 2005 12:52 PM  
Yes I have been here in the sandbox for 11 months now!! We are going home at the end of Feb, its about time. And I am telling you when you have nothing to do, all I do is get ideas for the race car and just want to go hit the shop when I get home.
what grind of cam did you run with that set up, well I guess it would depend on what your track is. I run on a 3/8 high bank tacky all night track.

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Raz_900
Dirt Forum Champ
Total posts: 635
posted January 18, 2005 07:24 PM  
FWIW, I cc'd a pair of 041 heads I just put on my partners backup motor. They're basically stock 1.94" & 1.5" with aftermarket stainless valves and slight work in the bowls with a 70 degree cutter on the seat machine. The chambers were 63cc after being cut .010" and the intake port was 156cc with the undercut valve stem.

I doubt porting the everylivingdaylights out of stock heads will get them over 180cc. Probably nowhere near that. A decent port job might get them up around 165cc. Much over that and the cutter would be through the port wall. I'm working on a set of 4.6 Ford SOHC PI heads for my daily driver. Basic smoothing of the ports and blending in the bowls gained a whopping 4-5cc over stock.

So take it for what it's worth and as comparison.

hobby10k
Dirt Freak

Total posts: 226
posted January 19, 2005 02:19 AM  
Ok what would you suggest be the best runner size to use with that application? 165cc seems kind of small.
looks like racin78 suggests a 200 runner size. but haft to get darts to achieve that.

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racin78p
Dirt Freak

Total posts: 333
posted January 19, 2005 02:28 AM  
I agree Raz_900. The numbers you posted are probably real close (camel heads and porting). The last drag motor I ran was a 302 '69 Z motor (DZ block) with the double humps. The guy who built it ran NHRA class racing for a gazillion years holding some records for his class for quite awhile. Anyway, he had a sun flow bench and spent many hours getting the heads to flow above 200cc (really!). I want to say they were more around 215, but I can't remember now. I know he was extremely satisfied with them, and said that they were probably the best set he had ever done. hobby10k: the cam we run is a Midwest Motorsports #6 or 7. I'll have to check the cam card. The NEW cam I ordered from camcraft is different more so ith lobe seperation than anything else (at least what I am willing to say!). I run a 4/10th high banked track and corner exit is the key to winning here, and with the new cam and motor I should have plenty of that. Bring it on home safe!

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racin78p
if it ain't fun, then don't run

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