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Why AFR 315s over the already ported AFR 305s? Why would the CNC chambers that were done on the 305s be different than the CNC'd ones in the 315s?

Excited to hear the results of this one.
Chris, they were angle milled to get a little compression in the original 502. Like my heads, never ending piston clearance problems.....
 
Chris, they were angle milled to get a little compression in the original 502. Like my heads, never ending piston clearance problems.....
Stock chambers on the AFR's are 121 cc's for the CNC'd versions. How much were they milled down to?
 
Why AFR 315s over the already ported AFR 305s? Why would the CNC chambers that were done on the 305s be different than the CNC'd ones in the 315s?

Excited to hear the results of this one.
The 305's were as-cast, no CNC chambers. They were angle milled to the max for ~11:1 compression. To get more compression from them now, we'd need custom pistons since the valve angles are rolled and locations shifted and a "shelf" dome won't work. Davey decided that, also, since the heads have near a thousand passes on them it's probably time to just start with something new. The older heads don't have some of the engineering/valve train revisions that the new heads have and I can start with a set of 315's, install bigger intake valve, do some bowl and s/t work and get them flowing like a set of 335's pretty easy. Probably step up to T&D rockers on this set as well, and we can go with a shelf stocking piston. KISS has always been the theme of this particular program and we're hoping to step up the power and still keep it that way.
 
Got a call yesterday, and have to share this with the board. I have to offer a special thanks to a particular board member who will remain anonymous, but who has offered out of a simple gesture of kindness and support, to buy Davey's new intake manifold for this project. What a great example of the spirit of the sport, a true friend, and the great people we have here on TC. :hurray::beers::thumbsup:
 
Got a call yesterday, and have to share this with the board. I have to offer a special thanks to a particular board member who will remain anonymous, but who has offered out of a simple gesture of kindness and support, to buy Davey's new intake manifold for this project. What a great example of the spirit of the sport, a true friend, and the great people we have here on TC. :hurray::beers::thumbsup:
Big time :thumbsup::thumbsup:
 
Got a call yesterday, and have to share this with the board. I have to offer a special thanks to a particular board member who will remain anonymous, but who has offered out of a simple gesture of kindness and support, to buy Davey's new intake manifold for this project. What a great example of the spirit of the sport, a true friend, and the great people we have here on TC. :hurray::beers::thumbsup:

Very nice gesture on a fellow board members part. :beers:
 
Sounds like a great build guys. 850 plus hp would be outstanding with a 4" stroke.
 
Some Chevelle guy is buying Davey's intake for him........PRICELESS :thumbsup: :hurray: :beers:
 
I can't thank everyone enough for helping me out with this new version of the motor, especially whoever the mystery intake manifold person is...that is beyond belief. I think the idea of having these three work on this is pretty interesting, certainly a lot of different ideas. I pretty much told each of them they are free to try or do anything they want and I'll support it, I don't know if this has ever been done so let's have some fun with it. Each certainly has a solid area of expertise so what happens if we bring it all together? I don't have any power expectations but I'm sure they'll come up with enough to give me suspension problems again...:D

So we'll put out info as it is relevant, this isn't a secret build or anything like that but knowing these guys they'll come up with some good numbers for what will be pretty much a shelf part motor....:thumbsup:
 
"for what will be pretty much a shelf part motor"

As long as it stays on a shelf somewhere and not installed in some 67 Chevelle that's lined up next to me, well, I'm good with that :)
 
I can't thank everyone enough for helping me out with this new version of the motor, especially whoever the mystery intake manifold person is...that is beyond belief. I think the idea of having these three work on this is pretty interesting, certainly a lot of different ideas. I pretty much told each of them they are free to try or do anything they want and I'll support it, I don't know if this has ever been done so let's have some fun with it. Each certainly has a solid area of expertise so what happens if we bring it all together? I don't have any power expectations but I'm sure they'll come up with enough to give me suspension problems again...:D

So we'll put out info as it is relevant, this isn't a secret build or anything like that but knowing these guys they'll come up with some good numbers for what will be pretty much a shelf part motor....:thumbsup:

Good for you David! I am anxiously awaiting to hear dyno results and some stories from track about putting HP to the ground. Got quite a team there.
 
"for what will be pretty much a shelf part motor"

As long as it stays on a shelf somewhere and not installed in some 67 Chevelle that's lined up next to me, well, I'm good with that :)
I'll second that!!! :D
 
Guys,

After re-reading post #1 it looks as though Mark will dyno the finished product at his shop? Any idea when that's going to happen? Wouldn't mind walking over & watching that! :D
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