AFR NEW HEADS

I hope this is not what the cost is going to be on the new heads.................

http://www.flowtechinduction.com/afr-bb-ford-300-bullitt-cylinder-heads/

That must have the Ed Curtis multiplier added.

I guess that price is intended to boost A-460 sales.

Yikes.

I hope that is for a set and not just one head if it is one then it is over $11,000 a set

So much for an "economical alternative" to the other heads on the market.....

Yikes... ....Don't think I'll be trying them I will go strait to "A" heads

They are trying too kill them before they actually produce them?

its got to be a typo

The same heads are 2900 for the pair on d and f performance

69F100 wrote:I hope that is for a set and not just one head if it is one then it is over $11,000 a set

yup, quantity of 1 must have been

Do they come fully CNC ported from AFR?

The link mentions they are fully CNC ported. Maybe that's the reason for the price?

jbozzelle wrote:Do they come fully CNC ported from AFR?

The link mentions they are fully CNC ported.  Maybe that's the reason for the price?

$11,000 IDK if the lazer cut them I will buy turn key

Has anyone seen the intake that goes w/these heads? They have pic's in National Dragster this month of it ,looks good.

http://www.hotrod.com/how-to/engine/1409-afrs-big-block-ford-cylinder-heads/

Prices are:

2099.00 270cc
2.25/1.76 valves
Flow:
.400 311/225
.500 356/253
.600 392/272
.700 402/279
On a 4.39 bore fixture.

2599.00 280cc
2.25/1.76 valves
Exh. Raised .250

2799.00 305cc
2.30/1.76 valves
Exh. Raised .600

IIRC.

I think these heads will work very well. If you read the article, AFR worked hard to get the port and chamber to work real well. I think out of the box they will be head and shoulders above the Kaase heads. We shall soon find out. Remember, flow numbers AREN'T EVERYTHING. Look how well the AFR heads have worked on SBF and BBC applications. A lot of that tech and experience has gone into these heads. I like the fact that they stayed with a factory exhaust pattern. I hope they perform as well as expected. Glad to see them step up.

I haven't put a pencil to it , but they look like the average flow may be less than a set of P-51's the 400 500 and 600 numbers are way off what I have seen on the Kasse's.

Out of the box? I'll have to check my flow sheets on the set I owned and see. I know for a fact the exh. flow numbers of the OTB flow numbers of the P-51's are well below the 270cc AFR's. The intake flow of the P-51's is excellent but I want to see a head to head comparison on a dyno. The flow numbers listed above are for the 270cc runner. P-51's have a 310cc runner. A better comparison will be the AFR 300cc runner. Hard to get an apples to apples comparison as the 300cc runner head has a 2.30 intake valve and a raised exhaust port. I still believe it will out perform a P-51 OTB easily. It should any way. I.E. newer design, better ports, valve location, raised exhaust port, etc...

Kaase website states intake flow:

.400=330
.500=375
.600=395
.700=401

Mine didn't flow that well until the higher flow numbers. (Ex. .700, .750, .800).

Kaase has an article on the P-51 section where a set is compared to a set of SCJ's. Out of the box the P-51's flowed:

.400=306
.500=350
.600=368
.700=388
.800=395

This was an independent test. Make no mistake, the P-51's are a great set of heads but they MAY have just been passed in performance. I'm a big fan of Kaase and appreciate all he has done for the BBF community over the years. He's still an awesome builder and competitor.

I can't believe that a few builders haven't received a few sets to try out. I'd love to see some dyno tests from some of the builders on this forum. Time will tell.

738drvr wrote:Out of the box? I'll have to check my flow sheets on the set I owned and see. I know for a fact the exh. flow numbers of the OTB flow numbers of the P-51's are well below the 270cc AFR's. The intake flow of the P-51's is excellent but I want to see a head to head comparison on a dyno. The flow numbers listed above are for the 270cc runner. P-51's have a 310cc runner. A better comparison will be the AFR 300cc runner. Hard to get an apples to apples comparison as the 300cc runner head has a 2.30 intake valve and a raised exhaust port. I still believe it will out perform a P-51 OTB easily. It should any way. I.E. newer design, better ports, valve location, raised exhaust port, etc...

Kaase website states intake flow:

.400=330
.500=375
.600=395
.700=401

Mine didn't flow that well until the higher flow numbers. (Ex. .700, .750, .800).

Kaase has an article on the P-51 section where a set is compared to a set of SCJ's. Out of the box the P-51's flowed:

.400=306
.500=350
.600=368
.700=388
.800=395

This was an independent test. Make no mistake, the P-51's are a great set of heads but they MAY have just been passed in performance. I'm a big fan of Kaase and appreciate all he has done for the BBF community over the years. He's still an awesome builder and competitor.

I like a smaller port with good flow numbers. then the flow numbers are not the only thing that makes for a fast ride imo

I just shipped them some more valve locks so they must be ready to ship heads.

68formalGT wrote:I can't believe that a few builders haven't received a few sets to try out. I'd love to see some dyno tests from some of the builders on this forum.  Time will tell.

They need to produce them to give them to people, also AFR has a different crowd of builders out side of the BBF most of us know and they probably are not plugged into our info sources or avenues.

Here are the numbers I have off a set of heads that were out of the box that represent a good average number from what I have flowed.

1. 78.1    
2. 163
3. 260
4. 339
5. 360
6. 400
7. 390
8. 382

1. 57
2. 109.4
3. 154
4. 189.3
5. 215.4
6. 236.6
7. 246.9
7.5 252.8
8. 257

dfree383 wrote:

68formalGT wrote:I can't believe that a few builders haven't received a few sets to try out. I'd love to see some dyno tests from some of the builders on this forum.  Time will tell.

They need to produce them to give them to people, also AFR has a different crowd of builders out side of the BBF most of us know and they probably are not plugged into our info sources or avenues.

When it finally happens I know you guys will be on top of how it was built.

738drvr wrote:Out of the box? I'll have to check my flow sheets on the set I owned and see. I know for a fact the exh. flow numbers of the OTB flow numbers of the P-51's are well below the 270cc AFR's. The intake flow of the P-51's is excellent but I want to see a head to head comparison on a dyno. The flow numbers listed above are for the 270cc runner. P-51's have a 310cc runner. A better comparison will be the AFR 300cc runner. Hard to get an apples to apples comparison as the 300cc runner head has a 2.30 intake valve and a raised exhaust port. I still believe it will out perform a P-51 OTB easily. It should any way. I.E. newer design, better ports, valve location, raised exhaust port, etc...

Kaase website states intake flow:

.400=330
.500=375
.600=395
.700=401

Mine didn't flow that well until the higher flow numbers. (Ex. .700, .750, .800).

Kaase has an article on the P-51 section where a set is compared to a set of SCJ's. Out of the box the P-51's flowed:

.400=306
.500=350
.600=368
.700=388
.800=395

This was an independent test. Make no mistake, the P-51's are a great set of heads but they MAY have just been passed in performance. I'm a big fan of Kaase and appreciate all he has done for the BBF community over the years. He's still an awesome builder and competitor.

not to take anything away from the AFR heads (it would be hard to since they don't have them out) but when you are comparing head specs on heads with different valve locations and runner length you can't use runner volume. if one has a longer runner it may have more volume (cc's) but a smaller cross section and higher velocity port. I can't wait to see some on an independent dyno to see how they perform.

wayne