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Old 11-18-2011, 10:12 AM
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Default Need advice cam selection

So I just got some afr 205 heads, 59cc. I was wondering what kind of cam I should be looking into. I would like to stay under .600 lift. Details of the car, A4 3600 stall fast 90/90 intake. Stock bottom end. Any info would help. I would like to be above 400wrhp. Thanks in advance.
Old 11-18-2011, 10:18 AM
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I saw those heads for sale on here. Congrats on buying them. With them being milled down to 59cc, your going to be limited on size unless you plan to flycut the pistons. Anything over 230 is going to require flycuting. I'd say with those heads, a 228r on a 114 LSA would get you there.
Old 11-18-2011, 11:59 AM
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yep just bought them. I'm trying not to flycut. Thanks for the help man
Old 11-18-2011, 12:21 PM
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At least check to see what kind of clearance you'll have. What size cam would you really like to run?
If you don't fly-cut with those milled 205's you're really limiting your cam choice?
The cam duration/overlap is your main limiting factor.
Old 11-18-2011, 12:29 PM
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Originally Posted by 99Bluz28
At least check to see what kind of clearance you'll have. What size cam would you really like to run?
If you don't fly-cut with those milled 205's you're really limiting your cam choice?
The cam duration/overlap is your main limiting factor.
He's right. A 228R may stil not clear. Personally, I wouldn't buy any AFR heads milled more than 62cc because of the limiting factor concerning cam selection. Maybe Tony Mamo will come in and give you some advice. They are his heads, so he will know what cam would work well with your setup.
Old 11-18-2011, 12:38 PM
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I would really like to run the tsp 228r on a 112lsa. Hopefully it will have the clearance. Hopefully Tony chimes in and tell me that this setup will work just fine. Thanks again guys for the input.
Old 11-18-2011, 12:47 PM
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Originally Posted by sittinlovely
I would really like to run the tsp 228r on a 112lsa. Hopefully it will have the clearance. Hopefully Tony chimes in and tell me that this setup will work just fine. Thanks again guys for the input.
If I remember correctly, Tony posted in a thread a while back that a 228R on a 112 LSA would be close with AFR heads with 62cc chambers. You may have to bite the bullet and flycut. If you do that, you could get into the 230 duration.
Old 11-18-2011, 01:18 PM
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From what I understand the AFR 205 don't like a big split so a 228R or 228/230 would work great but like these guys have already said...check the PTV clearance.
Old 11-18-2011, 01:18 PM
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What about a Vengeance VRX4 or VRX5?
Old 11-18-2011, 03:31 PM
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Originally Posted by JGKadell
What about a Vengeance VRX4 or VRX5?
No way. Not without flycutting.
Old 11-23-2011, 10:29 AM
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why not just flycut????

Here is a killer article on it:
http://forums.corvetteforum.com/c6-t...mpression.html
Old 11-23-2011, 10:56 AM
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Maybe a 224/224 for the safe side but If not, Pm Tony to see what he comes with, unless he see this thread.
Old 11-23-2011, 11:00 AM
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I would rather run a 224 than a 228/flycut if it were my car.

Not much real difference in power between those 2 cams from what I've seen and much less work and risk to the pistons.
Old 11-23-2011, 03:30 PM
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I pmed Tony and he said I could squeak in a 228r but to always check for clearance. What kind of head gasket should I run with this setup? Oh by the way, he said to make sure its on a 114lsa

Last edited by sittinlovely; 11-23-2011 at 03:42 PM.
Old 11-23-2011, 05:19 PM
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get the small cam Tony ground for these heads or get a custom cam from Patrick-G.
Old 11-24-2011, 11:34 AM
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I think that Tony said that the 228R cam might clear if you are using stock gaskets which are like 0.052
Old 11-24-2011, 12:20 PM
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Originally Posted by Samer
I think that Tony said that the 228R cam might clear if you are using stock gaskets which are like 0.052
FYI, don't forget that the 228r could be actually larger or small, the lsa could be also be smaller or larger, and even the advance more or less. So unless you have the specifications verified (Cam Doctor) that's it specs out to a 228/228 or smaller, 114lsa or greater you're playing Russian Roulette with your engine.
I'd suggest looking at a something around the size of a 224/224 or smaller.
If a smaller cam is not a option, then you should reconsider fly-cutting the pistons.
Old 11-24-2011, 03:47 PM
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Several have suggested it but perhaps the ol' Thunder 224 would be best here
since the lift is .563 and if he gets the wider lobe separation with little IN.
advance ground in, it should clear with the GM mls gaskets which I thought
are .056". At eleven to one compression and those heads the op should
easily eclipse the 400 goal with a decent tune.




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