I just finished our latest AFR head and cam car. I've done quite a few but I though this one deserved a "post", since there seemed to be a lot of controversy about this combo lately.
They are standard, off the shelf 205 AFR heads that have been milled and upgraded to Comp 921 springs.
Obviously, we used all the bolt on tricks, FAST 90 MM manifold, 90 MM throttle body, underdrive pulley etc.
It made 481 RWHP and 434 RWT, on my dyno. Everyone is of the opinion that my dyno reads up to 4% low, but I'm just going with the numbers that my dyno shows. You can extrapolate from there, if you like.
I feel that our upcoming big port AFR head, bigger cam and larger headers could break the 500 mark. (maybe wishful thinking)
Anyway, here's the dyno graph. No BS, no tricks.



Oh, I forgot to add: When I had the heads off, I noticed a nick on the deck. (It probably happened here) I offered the customer a forged shortblock for $2500, installed or I'd install his internals in a new block at no charge. He opted for the forged short block. I only bring this up because this motor was started up, drive exactly four miles and then I tuned and dynoed it. I'd be shocked if it didn't make at LEAST 10 - 15 more HP after it's broken in. The forged parts did absolutely nothing to add power. Quite the opposite, in fact.

 

Awesome numbers from the Home Town Hero!

mtv

 

Im sorry, maybe I missed it but was this on a Coupe or Z06? If a Z06 what would you guess the Coupe would be on the dyno?

Also, great job on the #'s.

Thanks
-Kam

 

i would think it really wouldnt matter... the main diff between the two engines are heads, intake, and cam and he's upgraded all those in the engine.

Good numbers. i'm curious as to the specs of the cam.

 

what cam and isnt that a little lean??
Dave

 

man very nice results

I'd just like to see a non CA car do the exact same combo and get the results. Not doubting the product but that would put a lot of minds to rest since so far its been Tony Mamo, LAPD, and now you Andy.

 

I would take those numbers.

Micah

 

on andy's part, he has given an, IMO, honest post on a cam/afr head setup on his C6.

http://forums.corvetteforum.com/showthread.php?t=909339

which really makes me wonder what the heck is going on with the new ls2. most likely programming but what the heck did gm do?

 

Ya the only reason I brought that up is because I know many people interested in the AFRs and are still unsure because all 3 really successful AFR cars have been in California.

The other 2 Vettes I have seen with the AFRs, one made 440rwhp and one made 420ish rwhp.

 

Andy,

I have to warn you, if you keep up this behavior you are going to make me get a divorce.

Knowing that there is someone out there that does what you do, without trying to 'MMS' me to death makes me want to put my new car under the knife. After my experiences in Reseda three years ago, I swore I wouldn't take my car to anyone in L.A. again, or really, anyone for that matter. I really didn't think it would ever happen again, but your actions sure speak highly. Everyone I have talked to does nothing but praise your work, so I would like to congratulate you on doing such a good job.

I'm going to P.M. you about options we have to keep my car in a somewhat easy to make smog configuration.

Cheers!

 

Another good reason to move to California.......our cars make 40-60 more RWHP

Or maybe our tuners are better

Or maybe the other specialists suck

What ever ......... bring your car over to Andy's

 

What about LG? They recommend AFRs with their cams, and told me in person that they hit 480+ on a few cars using those heads.

Good results andy, cam specs. i will try to take a guess at it

228/230 585/591 112 LSA?

 

Nice #s Andy!
JB

Any other graphs out there?

 

They hit more using their own heads.

The California cars I have seen so far are using a 224 228 grind. Therefore, with a G5x3, all the cars should be over 500rwhp. If everyone can get 480rwhp from that size cam and AFR heads + bolt ons, all the other head people might be out of business.

 

Thanks for stepping up to plate Andy, with more information on the AFR's. I think that is all anyone ever wanted. Hopefully, we will see some similar number's back east.

If you hit around 375+ CFM(Intake) on the 240 Castings, you can count me in as your first customer on that one.

I would agree on the forged parts, they weight more, due to there density.

Kumar, the new norm, seems to be the .575-.585 224-240 cams, even for the stroker. My guess, that is near where a 100% volumetric efficiency is being reached. Just guessing, but the big cube cams that a few of the major vendors have recently put out, have been in that range. Food for thought. Kumar, go to bed..

 

Wait, what I am doing here at this time in the morning.....

 

Awesome numbers Andy.. great job as usualy with awesome customer service

 

Why is the A/F so lean? Did it have an electric water pump? How about cats? How much was milled and what gaskets did u use?

 

Andy,
Thanks for taking the time to talk to me yesterday

 

Wow....