I thought I would post some never seen before on the internet shots of our Raylar BigPower aluminum 8.1L/496 cylinder head.
Its really nice what you can do with a clean sheet of paper, a flow bench and Darin Morgan doing the tweeking!
It is also amazing what velocity and flow can do for a head!
This head has a 2.25" intake valve that flows 395 cfm @.650 lift and a 1.80" exhaust valve that flows 305 cfm @.650 lift, and it does not stop there at those lift numbers. The low lift flows and velocities are quite impressive also.
Note the combustion chamber, its a peanut shaped fast burn type design. How does it work, well in big power engines we have built it only needs about 30-31 degrees of max timing advance max to make peak power numbers. Whats that mean, less advance, it means the combustion is quicker and more efficient here that in a head that needs 36 degrees!
This one of the parts that makes Raylar 496 engines and kits really work!
This is why I talk about TODAYS cylinder head design and performance versus old 1967-1970 vintage designs.
We've learned a lot in 30 years!
Ray @ Raylar