updated 15* and 13* SBC heads
 

Hey gang,

been a while since I've been around, .. been busy working on ports
and cnc programs.

I'd like to share a few things with you, ..
I just did a total re-work on my 15* small block Chevy head, ..
new ports and chamber, .. flows in the 390 to 400cfm range depending
on valve size and application, .. makes killer power.
It uses standard 18* cast manifolds and shaft rockers.
We are using HIP processed castings for a stronger then cast cylinder head.
http://raceflowdevelopment.com/RFD-h...ck-monster.htm

The real killer is the new 13* stuff, ..
We now have 5 different ports for this casting, .. and have a new version designed
for big inch small block Chevy's at 440+ CI.
It's a 320cc port that flows well over 440cfm with a 2.23" valve and can
support 1000 HP.
We use either custom built cast manifolds with custom adapters or sheetmetal intakes.
http://raceflowdevelopment.com/RFD-h...odixGB2000.htm

http://raceflowdevelopment.com/image...ds/gb/gb23.jpg

Curtis

Nice flow #'s on those 13* heads, does the intake side support 18* intake manifold? I'm not much on carbs, and i know that Kinsler makes a stacks injection for the 18* heads. I talked to Brodix a couple weeks ago and they told me the exhaust side in milled at 55* just like a 23* head.

Thanks in advance

Zip.

:D :D Nice numbers Curtis.....you're the Man.. :wink: :wink:

No the 13* stuff we've been using sheetmetal intakes if it's a drag application,
and we use custom built cast manifolds from Wilson if it's a Dirt car.

The 15* head uses the 18* manifolds and rockers, .

curtis

Thanks Curtis,

I'm a total injection person, have no intrest in a carb setup and am total alcohol injection.

Thanks for the reply,

Zip.