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The body is alloy machined finish
The Speedmaster MidRise Air design features the identical plenum and runner design as the normal MidRise
Design from the ground up based upon your favourite bowtie block with the ability to handle naturally aspirated
improved meshing to reduce tooth jump
and are available in chrome or cast aluminum
Chevy SBC 350 1.600" +100 11/32" Stainless Steel Exhaust Valves The body is alloy machinedWhen it's time for valves, don't cut corners. Get genuine Speedmaster stainless steel valves. They're made from a tough, stainless steel alloy and are carefully designed to increase gas flow for more power. What's more, they have hardened stem tips for durability and are swirl polished.
