W
Windsor377
Guest
I'm posting this here (besides the Drag Race board), since it is kinda cool and engine related. Thought it would help fill in the time.
I need to start by stating, Carey at CPF was good enough to send me his model cylinder head with his latest large port design.
I took it to a well known local shop to flow it, for the sake of credibility. For serious work I always use the SF 600 bench at Burtonsville Performance Machine in Laurel Md. The shop is very well known and respected locally. Many NHRA & IHRA SS and Stocker winners and record setters have come through the shop. Not to mention a lot of very successful race engines for a wide spectrum of classes/applications.
Their bench in known to be on the pesimistic side. It is NOT one of those "Happy" benches used in advertisements.
I asked Alan Calway (sp?) to be the operator. Alan is along time cylinder head guy around here and a prior IHRA C/A record holder.
We only flowed the intake, as this model head does not have Carey's latest exhaust port.
We used a 4.125 fixture and mounted the head as it would be on the cylinder. We adapted a splayed valve GM radius inlet that was laying around. It pinched the top and bottom a couple thousandths. We filled the sides and transitions with clay. The radius was 5/8" per Carey's direction.
The intake valve size is 2.260 w/5/16 stem.
Here are the numbers @ 28":
0.100 62
0.200 139
0.300 224
0.400 317
0.500 381
0.600 425
0.700 439
0.800 450
0.900 453
1.000 458
I am impressed. I'm getting a set.
I need to start by stating, Carey at CPF was good enough to send me his model cylinder head with his latest large port design.
I took it to a well known local shop to flow it, for the sake of credibility. For serious work I always use the SF 600 bench at Burtonsville Performance Machine in Laurel Md. The shop is very well known and respected locally. Many NHRA & IHRA SS and Stocker winners and record setters have come through the shop. Not to mention a lot of very successful race engines for a wide spectrum of classes/applications.
Their bench in known to be on the pesimistic side. It is NOT one of those "Happy" benches used in advertisements.
I asked Alan Calway (sp?) to be the operator. Alan is along time cylinder head guy around here and a prior IHRA C/A record holder.
We only flowed the intake, as this model head does not have Carey's latest exhaust port.
We used a 4.125 fixture and mounted the head as it would be on the cylinder. We adapted a splayed valve GM radius inlet that was laying around. It pinched the top and bottom a couple thousandths. We filled the sides and transitions with clay. The radius was 5/8" per Carey's direction.
The intake valve size is 2.260 w/5/16 stem.
Here are the numbers @ 28":
0.100 62
0.200 139
0.300 224
0.400 317
0.500 381
0.600 425
0.700 439
0.800 450
0.900 453
1.000 458
I am impressed. I'm getting a set.