Kaase heads are 58cc and unported... I have heard the flow numbers are lower than advertised
TFS 60cc
TFS flow.
.1. 67.2. 52.5.
.2 144.2. 112.9.
.3 221.2. 161.5.
.4 271.6. 198.
.5 301.2. 224.1.
.55 312.2. 235. 5.5
.6. 315.5. 242.7.


Kaase
1.
2. 156. 111
3. 219. 142
4. 265. 169
5. 297. 185
5.5
6. 308. 199
7. 309. 208
.750 311. 215

 

What about the TEA TFS 225 Highport? Great head and plenty of room to grow later......

 

He claims ported they go 348 cfm at.600 and 350 at.700
http://www.jonkaaseracingengines.com/component/content/article/231-kaase-p-38-heads.html



About highports.... I love them I was buying a set but the seller ended up backing out... They are just out of the budget right now

 

The 205 with the right cam. The kaase head has more runner than you need to accomplish your goal.

 

How about a custom head from RCS off of a CHI casting. They have this head working pretty good.

http://www.rcsracingengines.com/RCS Induction/Cylinder heads/CHI Heads.html

 

Im building a 393w and have both sets of heads its a street strip car looking to make about 600fwhp
I am going to SAM racing next year so problems can be fixed.
3.850x4.030
Shooting for 11/1 comp (pumpgas)
Hydraulic cam
Super victor with either a box or an elbow
3100ish pound car

TEA 205 tw heads with nitrous exhaust ports
2.02 1.60
11/32 valves

Kaase P38-Jegs/Kaase heads
247cc intake port
2.100 1.60
11/32 valves

Only thing i can see now with both heads assembled is the jegs/kaase heads valve guide bosses are super thin.
Which would you guys choose? There is not much info on these heads. Maybe for a reason where as i know the 205s make decent power

Hands down I would run the TEA head...P38 head is too large for that build.
Brian

 

It kind of tricky... The port on the P38 is much longer than a std. Head it's probably pretty comparable

 

Yep... It really isn't that big either the port is smaller than the TEA head (for now). Just a long port

 

Never seen this head before. Can you run a standard intake on it? I don't see where the extra volume is made if the port is smaller.

 

It's a canted head...you can use any standard intake/header combination

 

Fox lake high port 227. only a couple hundred more than kaases heads assembled and they dont require any fancy flycutting. I would go with this head.

What are the rest of the parts youre using? Block, crank, rods, pistons, cam, etc

 

I wouldn't buy either of the heads new, But I already have them both

SVO A351 2 bolt block
Scat crank
Eagle 6.250 rods
Je dish pistons
1 7/8 header 3in exhaust to tailpipes
Don't have a cam yet

 

The older jegs/kaase casting was 247cc the newer p38 is 240cc. These heads require it's own piston. You may get by with a dish or depending on cam but must check it. I can tell you the valve train geometry is little weird but you can get by with same pushrod length if need to be. Depending what rockers you run the center trunion will likely touch and need grinded some. Otherwise I would run the kaase all day long over that 205 head but that's me

 

*crane

 

If they don't end up making the number... And you are low on cash, there's always an old stand by that will exceed your goal every time..







Iron 4v

 

FACT!

 

LOL

 

I think it will be tough with either head to make 600.., wish I could have kept the old brodix neal heads I had

 

I think you will make more power with the p38...it is a canted valve head...really nice chamber, intake port.....and Kaase himself designed it. I do not think you will be disappointed

 

Sell both and get some AFR 220 heads or some High Ports.

 

I want to run one and sell one that way I could buy a decent valvetrain for one set
I may keep them both and dyno back to back with just a head/cam swap

if i did sell them both i would get some used 7721s or a CHI head but i doubt im going to do that

 

You can make 600 hp with a AFR 205.
Knowing what I know now I would probably build it with a CNC ported 230-240 cc high port.
I would not even consider a P38 and all the trouble that entails.
My son makes about 650 bracket racing hp with a AFR 220 on a 408w so I wouldn't think there was a need to make things really complicated.
That is unless .......your looking for a max effort motor?

 

For the money i agree a hp would be better but i got a decent deal on them... I want 600 anymore is just a bonus

 

why only a 393 ? that t/w can support over 600 hp.

 

Thats what i have

 

Ever thought of a solid roller cam ?

 

honestly when it runs.. I drive it almost everyday

 

victor jr can work also

 

Of the two, I would pick the TEA 205's, great head. Keep it simple.

 

TLSR

 

What would be the advantages in a 6500rpm MAX deal?

 

^ would there be any?