Originally Posted By Smell Ya Later
Originally Posted By pittsburghracer
Originally Posted By B G Racing
CNC is the cats azz for duplication and reapeatibility.The program for the CNC is the magic.most programs are designed for maximum flow volume,minimum restrictions and optimum alignment.Each program is designed for the maximum effectivness for each particular application application.No one program is for "all" applications.




Sorry but I'm not getting this post. Duplication yes, but in EVERY case or head I've tested it has been BAD duplication. Flowbench shows it and the track times do too.
John, what do you mean by bad duplication?



I'm telling you that EVERY CNC'd head that I have ever tested has been pathetic and needed major work. Upper lifts on every head went turbulent and started backing up in flow numbers. Testing proves short-turn not capable of maintaining control and the air goes straight across the bowl shutting off air flow going across the top of the port. You can hear it happening. (think garbage disposal)

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time