Dart Heads 355 CNC Valves Stem 3/8 or 11/32?
 

:party-smiley-004:In the process of getting a set of Dart 355 CNC bare.
Looking to go with Manley 11536 Int 2.300+.200 3/8 and Ferrea F2120P 1.890 sup alloy 3/8 and Isky 9905 [email protected] psi Hyrlr atleast thats what teague custom marine recommended. I have read several threads and alot of people are using 11/32 can anybody chime in and guide me in the right path. Also looking for the best deals on valves.

The heads come set up with 11/32 valves. They take .250 long intake and stock length exhaust. I use Manleys. 11854 intake (2.300") and 11745 exhaust (1.900) or 11743 exhaust (1.880")
Eddie

thanks eddie for you're quick response what about valve spring for a comp cam [email protected] 255 int 263 exh 632int 632 exh. What kind of spring pressure do I need on the seat and open pressure?

I need more info. What are the cubic inches, what rpm, supercharged or NA, comp. ratio, what lifters, etc.

588 CI Supercharged 14-71 Intercooled 8.4:1 6000/6200 Crane hydraulic roller lifters Vertical locking bar design.

About all you will safely get away with using those lifters is about 175# on the seat and about 450# over the nose. Personally, I would not use that lifter and go with Morels. They work.
Eddie