We are building a car for the Corvette Tune shootout early next year and need a set of cylinder heads. Here are our options...
1) Total Engine Airflow 6.0 Judson port
2) Patriot Performance LS6 replicas
3) AFR heads.

Phillip

 

What is your timeframe?

I am not really sure when AFR heads will ship.

I like 69-71cc 6.0 heads OR I would maybe hold out and see what the early testing of AFR's tells u. AFR was also planning a ~76cc head too.

 

I would go with the 6.0L judsons, with a 73cc chamber, if I had to do it over again I would of gotten these instead of the 5.7L heads with the 73cc chambers...

 

The main benefit I see with AFR's is deck hieght for high boost. I'd guess flow numbers would go to the Judsons, at least up top. The mid flow may go AFR but who knows. The safe bet is TEA.

 

What about CNC performance heads. I have seen some pretty good stuff come out of there for N/A hydro roller and Solid roller. I would assume that they could do some good porting for a F/I situation. I am working on a T76 project right now. I am getting Pete at CNC to do my heads. I have some 6.0 heads, I think I am going to surface the heads and keep them as close to 9.0 cr as possible. Just hog the **** out of the runners. Don't know what size valves would be a good choice on this setup. I am sure he does though. Any inputs on this.

 

I was told that my heads, though from ARE, were ported by TEA. With a very mild cam, they made awesome power on a powerdyne. I am sticking with them for the incon kit too. I saw an article in Hot Rod this month about the new AFR heads and they look pretty sweet. The ports look very similar (knife edged on the valve guide) so I am going to stick with them for now. I am sure that once the pro's get a hold of the afr's, the numbers will go through the roof.

-Geoff