Chevy SBC 350 Oil Flow Restrictor Kit The Speedmaster LowRise Manifolds are

The Speedmaster LowRise Manifolds are our lowest profile manifold and is also the only one that is street legal on pollution controlled vehicles

They are for small and big block Chevys

true-roller chains teamed up with billet steel crank and cam sprockets

These cast aluminum manifolds accept square-bore carburetors and are pressure tested to ensure maximum performance

All the factory flaws redesigned to be eliminated

Chevy SBC 350 Oil Flow Restrictor Kit The Speedmaster LowRise Manifolds areWhen roller rocker arms are installed, along with a mechanical lifter cam, the amount of oil flow required to the valvetrain is greatly reduced. Installing a Speedmaster oil restrictor kit will limit this unnecessary oil flow. These kits reduce the power robbing windage created from the excess oil draining past the rotating assembly and keeps the oil flowing where it is needed most, the rod and main bearings.