[efrost]

If you have narrowed the field down to AFR's you may want to consider a pair of AFR's new 185 Comp version heads. The CNC program has been revised and just based on flow bench numbers they are very comparable to the 205's. I believe the 185 Comp version will be available in the next 60 day or so.

I too am running a 392 and have look at the numbers for new 351 (larger SPF headers), gaskets, and 185 comp heads... the cost per estimated horsepower is pretty steep.

I would suggest getting your cam spec's from FMS and calling AFR and asking them to run the numbers matching your goals with a specific pair of their heads. A good back check would be call the cam manufacturer and confirming the heads selected match your goals and their cam.

Before I do anything I plan to have my current setup dyno’ed to confirm the baseline RWHP and more importantly the air/fuel ratio through the rpm range. The baseline will give me the ability to confirm any gains and the cost per horsepower after such major modifications.

Good luck and keep us posted.

Ed