PRC CNC'd Heads
#1
Teching In
Thread Starter
iTrader: (2)
Join Date: Nov 2012
Location: Texas
Posts: 18
Likes: 0
Received 0 Likes
on
0 Posts
PRC CNC'd Heads
Hi everyone. I have a question about a used set of heads that I bought. These are a set of CNC ported 799's by PRC. Is it common that only the top parts of the intake runners to be ported? It seems like the bottom halves are uneven and below some sort of "plane" as to where the rough castings did not get CNC'd. Thanks!
Jody
Jody
#2
TECH Senior Member
True. Flow is mostly affected by the upper half of the port; which is why the floor of the port is usually not touched, as lowering the floor is actually detrimental to flow.
#7
TECH Senior Member
Basically, material is removed ONLY where it needs removing. Makes sense to me!