In Stock_ Currently Available with ~1 Week Lead Time
The new big valve version is designed for builds with 2.7" bores and bigger . It has both bigger valves and bigger (correctly sized) larger ports than the std SBH. It utilizes an efficient 18cc combustion chamber.
This head will help your big bore build reach its full potential! Optimized for bottom end pull and still able to hit high horsepower numbers on the larger displacement >236cc builds.
This head has proven to be a winner for almost everyone we have sold. It has put racers up front all around the country. Proving to be a combination of the correctly sized components that even the most exotic builds can't compete with. Why? Because cylinder head development is so much more than the flow numbers that many sell off of. It is a balance between flow, port velocity, flow coefficients and mach numbers. When these values are not in check even the best flowing head will feel lazy and not be a winner, even if the flow numbers are said to be higher.
Note: For smaller bore builds we still recommend our std SBH for it is matched to perform better in this application. The port and and valve size give the best balance of performance with bottom end torque that is proven to win races. Going with the bigger valve head will actually reduce on track performance in most applications that don't require the bigger valves and ports. A small track application with a 212 build is not in balance with too much cfm and too low of port velocity.
.Valves, Springs, and Retainers
O Ring Seals
Head Bolts and Other Hardware
1.25:1 True Shaft Roller Rockers
Intake and Exhaust Flanges
DED racing has taken its 20 years of air cooled cylinder head development experience and integrated it into our new billet Honda/Clone head. Introducing the SBH designed to be an affordable replacement/upgrade for the stock cast head. With its integrated rocker arms, superior flow and rigidity it offers performance and value that can't be matched by a cast head or even other billet heads. It is designed to be a true bolt on product where the critical items are included so you don't have to search far and wide to get your project together. This also allows us to ensure that things like rocker arm geometry is optimized and perfect. ( Simply, More Powerful- means we offer products that make your sport more fun not more frustrating).
Fully CNC machined from a solid billet of aluminum
Made in the USA
4 bolt flanges with silicone O-ring seals (no gaskets to worry about) superior seal
Offset intake valve to deshroud from cylinder wall (better flow)