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Thinking about AFR 205s, worth it for my needs?

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Old 03-18-2010, 09:43 PM
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Default Thinking about AFR 205s, worth it for my needs?

Well, I've been eyeballing a set of AFR 205's for a while now and I think I might pull the trigger. My setup right now consists of an 03 LS6 longblock out of a C5Z, 224/224 .581/.581 114LSA cam, 1 3/4 Long tubes and BBK intake manifold, all the other assorted things like P&P TB and MAF, lid, UDP, etc. I made 422/402 with this setup (through a slipping clutch), but I don't like the throttle response right now. Since it is a street car only and I'm not looking for massive dyno numbers, does this sound like a good idea? Basically I'm trying to compliment my existing setup with a well designed smaller runner head, and the CARB EO number doesn't hurt since I'm in cali.

Is the price of the heads worth it? What should I expect to gain, and more importantly will it have the effect I'm looking for of adding a little more snappiness if I jab the gas? I'm open to suggestions, I haven't seen many heads in the 205-210cc range for sale these days.
Old 03-18-2010, 11:04 PM
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Those heads will rock with your setup. Part throttle tip in with the 205s is awesome with the small runners. Have them milled down to at least 62cc and run a .040 gasket and you'll be all smiles.
Old 03-18-2010, 11:06 PM
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I agree. The 205 intake runner generates so much velocity that it will make your car quicker and help take some of the lag out.
Old 03-18-2010, 11:14 PM
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Thats what I was hoping for. Those heads seem to do really well with a small symmetrical cam so I think I'm going to order them tomorrow. Anyone have #s for a setup like this?
Old 03-18-2010, 11:29 PM
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Originally Posted by Arc00TA
Thats what I was hoping for. Those heads seem to do really well with a small symmetrical cam so I think I'm going to order them tomorrow. Anyone have #s for a setup like this?
You do have 243 heads with the LS6 long block, which are better than the 241s or 853s that the LS1s used. Even so, you should still see a solid 30-35rwhp bump, not to mention the torque and power under the curve.

I gained 92rwhp and 38rwtq when I installed my AFR 205s and a mild cam back in 06.
Old 03-18-2010, 11:48 PM
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Originally Posted by BriancWS6
You do have 243 heads with the LS6 long block, which are better than the 241s or 853s that the LS1s used. Even so, you should still see a solid 30-35rwhp bump, not to mention the torque and power under the curve.

I gained 92rwhp and 38rwtq when I installed my AFR 205s and a mild cam back in 06.
Thats a solid bump, I would honestly be happy with 20hp more if it let me crack the whip a little more when I'm passing in traffic, etc. Sounds like I made a solid choice from what you guys are saying.
Old 03-18-2010, 11:52 PM
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i got some trick flow 205's
Old 03-19-2010, 12:08 AM
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Originally Posted by Arc00TA
Thats a solid bump, I would honestly be happy with 20hp more if it let me crack the whip a little more when I'm passing in traffic, etc. Sounds like I made a solid choice from what you guys are saying.
You'll definitely see that 20+
Old 03-19-2010, 12:42 AM
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Originally Posted by j_dover
i got some trick flow 205's
Then why are you still looking for heads? I didn't know trick flow made a 205 head.
Old 03-19-2010, 12:45 AM
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for my other motor :] yea they make a 205
Old 03-19-2010, 01:00 AM
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Originally Posted by j_dover
for my other motor :] yea they make a 205
Sweet I had no idea. I never hear about them.
Old 03-19-2010, 12:08 PM
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My AFR 205's have done very well to date since 2005 ( see sig )

In fact now they are out with Tony being Mamofied so I expect even bigger numbers this spring.
Old 03-19-2010, 01:15 PM
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Originally Posted by GTO1_OHIO
My AFR 205's have done very well to date since 2005 ( see sig )

In fact now they are out with Tony being Mamofied so I expect even bigger numbers this spring.
Thats not bad at all nice numbers, I've been wondering what the price of having them worked over is. It might be worth it because I've been thinking about sticking a 402 LS2 under them somewhat later down the road.
Old 03-19-2010, 01:16 PM
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Originally Posted by GTO1_OHIO
My AFR 205's have done very well to date since 2005 ( see sig )

In fact now they are out with Tony being Mamofied so I expect even bigger numbers this spring.
And the "Mamofication" process is almost complete!!...LOL

Hi Russ....just an FYI I will be shipping your heads and ported intake on Monday

Figured that might make your weekend

OP....The 205's are great but stock 205's like a small split on the exhaust. My ported versions work well with a single patter or small split.

Consider our tried and true 224/228 cam with the headswap.....you will be really pleased with the total package if your looking for a "driver" with alot of power and good area under the curve.

-Tony
Old 03-19-2010, 02:34 PM
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Originally Posted by Tony Mamo @ AFR
And the "Mamofication" process is almost complete!!...LOL

Hi Russ....just an FYI I will be shipping your heads and ported intake on Monday

Figured that might make your weekend

OP....The 205's are great but stock 205's like a small split on the exhaust. My ported versions work well with a single patter or small split.

Consider our tried and true 224/228 cam with the headswap.....you will be really pleased with the total package if your looking for a "driver" with alot of power and good area under the curve.

-Tony
Thanks for chiming in here Tony. If you suggest to swap to that cam, I think I should probably go with your advice since you seem to know what result I'm looking for. For the first time since I've owner my f-bodies I can afford to build it how I want and not cut corners or make compromises
Old 03-19-2010, 02:47 PM
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Originally Posted by Tony Mamo @ AFR
And the "Mamofication" process is almost complete!!...LOL

Hi Russ....just an FYI I will be shipping your heads and ported intake on Monday

Figured that might make your weekend

OP....The 205's are great but stock 205's like a small split on the exhaust. My ported versions work well with a single patter or small split.

Consider our tried and true 224/228 cam with the headswap.....you will be really pleased with the total package if your looking for a "driver" with alot of power and good area under the curve.

-Tony
Thanks for the update Tony. The first private track rental here is April 23 ... That'll give me a month to put things back together so that I can get some real world results to post.
Old 03-20-2010, 12:43 AM
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Originally Posted by Tony Mamo @ AFR
OP....The 205's are great but stock 205's like a small split on the exhaust. My ported versions work well with a single patter or small split.

Consider our tried and true 224/228 cam with the headswap.....you will be really pleased with the total package if your looking for a "driver" with alot of power and good area under the curve.

-Tony
I don't mean to hijack, but I'm looking for some clarification...

I'm looking to add a H/C Package to my car as soon as the budget allows, so right now I'm in the research phase of the project. As of now, the plan is to get a set of AFR 205's and match them to a TSP 228R Cam. I'm looking for as smooth an idle as possible and aren't really wanting to go any bigger than the 228R on 114 LSA. I also figured with the 228R being such a popular choice, it should be easy for a Mail-Order-Tune to be spot-on.

Since reading the above post concerning the information on how the AFR's like a "split" duration cam, I have a question.

My question is, would I see better performance gains with the 224/228 cam you mentioned or possibly Comp Cams XER273HR (0.224/0.230-degrees duration at 0.050 and 0.581/0.588-inch lift on a 114 LSA) over the 228/228 of the TSP 228R? I will most definitely be going with the AFR 205's, so the only question is which small/mid-size cam will compliment the AFR's to allow for the most streetable HP?

Again, I don't mean to hijack, but this is the first time I've read anything about the AFR's liking a split duration. And the fact that the info came from Mr. AFR, Tony Mamo, what better place to ask.

Thanks...
Old 03-20-2010, 07:23 AM
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I am running that combo as well and the car definitely bolts when you just touch the gas. Bump the compression and use a thinner gasket. The tuner found he could add more timing without KR with this setup. This spring I am doing a header change to LG Pros in hopes the larger CATs and mid section will bump in a few more hp.
Old 03-20-2010, 07:34 AM
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Originally Posted by BriancWS6
...not to mention the torque and power under the curve.
Peak power is of course increased, but the AFR205's are all about the power under the curve!

Originally Posted by GTO1_OHIO
In fact now they are out with Tony being Mamofied so I expect even bigger numbers this spring.
Last winter I removed my stock AFR 205 heads and sent them to Tony for his magic.
No other changes to my setup, the dyno clearly showed:
- Peak/rear wheel increase 15hp
- Under the curve increased throughout the entire rpm band from 15hp up to 20hp at some points
- Torque increases were about the same.

Originally Posted by Mumbles
Since reading the above post concerning the information on how the AFR's like a "split" duration cam,

I will most definitely be going with the AFR 205's, so the only question is which small/mid-size cam
will compliment the AFR's to allow for the most streetable HP?
Contact Tony, AFR sells two cams designed for their heads:
224/228 and the 234/238

I am running the 234/238 in my stroked 383 block.
Old 03-20-2010, 10:16 AM
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Go for it!!!! AFR never dissapoints I would think my 230/234 cam would work well if you wanna go a little bigger than Tony's 224/228 cam but not as big as his 234/238 cam......


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