Opinions on AFR 225 on my 427
05-23-2005, 06:45 PM
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Opinions on AFR 225 on my 427 Ok all what is your take on the afr 225 series on a darton 427? I am wanting to make at least 550 to the wheels do you think the heads are going to be enough. 
05-23-2005, 07:00 PM
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Originally Posted by chevydan
Ok all what is your take on the afr 225 series on a darton 427? I am wanting to make at least 550 to the wheels do you think the heads are going to be enough.
05-23-2005, 07:10 PM
#3
It would be a nice setup. Of course you want to check the deck height before you think about milling. I personally would wait until the LS7 heads and intake come out and see how they perform and the price. I have a feeling that setup will be the ****.
05-23-2005, 07:47 PM
#4
I agree.
The LS7 heads will be based on a 4.125 bore.
If you want something now the AFR's will be great, if you want something in a year the AFR's will still be a great choice, but the GM heads might be better.
Nobody knows.
You cant go wrong with the AFR heads.
The LS7 heads will be based on a 4.125 bore.
If you want something now the AFR's will be great, if you want something in a year the AFR's will still be a great choice, but the GM heads might be better.
Nobody knows.
You cant go wrong with the AFR heads.
05-23-2005, 10:03 PM
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Originally Posted by JZ'sTA
I agree.
The LS7 heads will be based on a 4.125 bore.
If you want something now the AFR's will be great, if you want something in a year the AFR's will still be a great choice, but the GM heads might be better.
Nobody knows.
You cant go wrong with the AFR heads.
The LS7 heads will be based on a 4.125 bore.
If you want something now the AFR's will be great, if you want something in a year the AFR's will still be a great choice, but the GM heads might be better.
Nobody knows.
You cant go wrong with the AFR heads.
05-23-2005, 10:19 PM
#6
Guys...
Lou (LG) made 550 RWHP+ with a very mild cam in a Darton 427 build up a couple of months ago.....he calls it his "gentleman's" cam....LOL (for real!). Quite a few guys have gotten there (or close) with 402 buildups. With a FAST 90, a cam in the 240 ish range, and the typical bolt-ons, I'm thinking hitting 550 RWHP in a 6 speed car should be reasonably attainable....more if the combination is dialed in.
Regarding the LS7 stuff, it will require notching pistons, custom intake (or LS7 intake), all the special rocker gear, valve covers, etc., etc. I view it as a conventional BBC guy stepping up to a Big Chief set-up. Very expensive endeavor when you really take the time to think it all thru. While I anticipate good results based on early flow estimates, it will probably be awhile till parts become cheaper and readily available for the conversion.....and I still anticipate a pretty big hit to the wallet when the smoke clears. But it is good for our hobby that GM has built this cylinder head....that is the direction of the future and it certainly looks bright.
Regards,
Tony M.
Lou (LG) made 550 RWHP+ with a very mild cam in a Darton 427 build up a couple of months ago.....he calls it his "gentleman's" cam....LOL (for real!). Quite a few guys have gotten there (or close) with 402 buildups. With a FAST 90, a cam in the 240 ish range, and the typical bolt-ons, I'm thinking hitting 550 RWHP in a 6 speed car should be reasonably attainable....more if the combination is dialed in.
Regarding the LS7 stuff, it will require notching pistons, custom intake (or LS7 intake), all the special rocker gear, valve covers, etc., etc. I view it as a conventional BBC guy stepping up to a Big Chief set-up. Very expensive endeavor when you really take the time to think it all thru. While I anticipate good results based on early flow estimates, it will probably be awhile till parts become cheaper and readily available for the conversion.....and I still anticipate a pretty big hit to the wallet when the smoke clears. But it is good for our hobby that GM has built this cylinder head....that is the direction of the future and it certainly looks bright.
Regards,
Tony M.
