The short runner design has proven to spool up 3-400 RPM faster than long runner tube manifolds and our overall design has proven itself capable of well in excess of 600whp. The entire inside of the manifold is smooth, so no porting is necessary. The rectangular runner shape perfectly matches the outlet of the head, and smoothly comes together into the shared plenum. The manifold remains this rectangular shape throughout the plenum with no transitions to round. This insures maximum exhaust gas velocity and energy. The Port-Flow manifold is constructed from a high silicon moly hybrid cast iron to provide enormous strength, relative light weight over ductile iron, and unmatched reliability for day to day use. One year warranty.

TECH TIP: This is the same manifold AGP turbo uses in their turbo kits which bolts a T3 turbine housing and a 2 bolt wastegate flange such as a Turbonetics Evolution and TiAL 38mm.

Part # AGP-SRT-MANIFOLD