AFR Heads being released

[Unholy707]

You are looking just at porting. To use their hardware with all new components and the larger intake valves is expensive. Their flow rates for stage 2 are great up to .6 of lift. Other companies brag about super high flow rates at a lift of .7 on the valve. That flow and lift does not happen on our hellcats.

Yep, good info here. What cam are you running with them?

 

[AlleyCat]

Not running anything now. Down. But it has a demon cam in it for street-ability. Plus the performance on it is pretty good.

 

[Unholy707]

Gotcha, was wondering if you had a custom grinned cam to really take advantage of the ported and worked heads with the additional lift capability and rpm

 

[AlleyCat]

They are at my mechanic!

 

[AlleyCat]

Mechanic states they are very pretty!

 

[vortecd]

They are at my mechanic! View attachment 109600

Which one are these?

 

[AlleyCat]

Frankenstein stage two fully assembled with slightly larger intake valves. Once together it will get dyno tuned remotely on my mechanics dyno.

 

[vortecd]

I went back through the thread and saw they are ported. Heck I was thinking you had one of the AFR heads

 

[AlleyCat]

Afr was having delay after delay. Not sure if they got the port matching problem fixed. After market heads are flow tested of course not being attached to the block and intake. Aftermarket ones may or may not port match.

 

[vortecd]

Did they give you flow numbers?

 

[AlleyCat]

They were exactly the same as thitek from .5 up to .6. Below .5 they are slightly better. Above .6 thitek is slightly better.

 

[Unholy707]

Frankenstein stage two fully assembled with slightly larger intake valves. Once together it will get dyno tuned remotely on my mechanics dyno.

Make sure you let us know what the gains were!!

 

[Wizza]

Can't wait to get mine in from AFR.....224cc set incoming soon

 

[AlleyCat]

Thitek? They are the best for full out racing. Although afr claimed to me they outflow thitek. Easy to make claims though.

 

[Boris]

Actually very expensive. To get the heads fully assembled it is 3700 or so. Then you need to send in cores. I went through a retailer who Frankenstein recommended. If I did not Frankenstein stated it would be at least a six week wait. So the retailer knew they had me and charged a 400 dollar premium. My cores were damaged and to fix those so Frankenstein could use for someone else cost me 400 in repair costs. Then there is shipping. So no deal at all. 4500 or so. But I have been down too long to remember and I want my car back. Idiot mechanic down here cross threaded a plug which broke off inside the head damaging it.

I've got damn near 4k tied up into some SBC heads for a 421 build.
Supposed to be 700+ hp when finished......if that ever happens.

Its not cheap if you want good stuff

 

[Unholy707]

Can't wait to get mine in from AFR.....224cc set incoming soon

“Soon”

 

[AlleyCat]

“Soon”

 

[AlleyCat]

Yeah mine are just 213. But With a larger intake valve2.18. Afr uses a stock size valve. Also your combustion chamber is smaller. .73 to my .79. You i believe will have higher compression which leads to more performance unless running tons of boost. Sounds like afr will perform well. Are they still delaying them?

 

[vortecd]

These companies need not advertise new products until they know they will be out. The last few years but a cluster but this is also nothing new

 

[AlleyCat]

Making progress.