PowerFlow S/B Recirc (Black Manifolds Only) 

Black small block recirculation manifolds. (Sold in pairs)

These manifolds were designed for the water to recirculate or preheat (no water passes through riser pipe flange) high horsepower 350 cid to 427 cid engines that are making 350 HP Plus. Manifolds have a 1 1⁄2" I.D. Runner with a tall D port entry. The outlet is 3" with a stainless steel air straightened plate to direct exhaust into riser pipe for maximum scavenging.

Manifolds will work with angled spark plugged heads or straight spark plugged heads. Also you can use tall valve covers for various rocker arm assemblies and stud girdle. Manifolds are available in black powder coated, hard anodized.

The risers are highly polished stainless steel, and are designed for 4" exhaust tips. We offer a wide variety of riser pipe configurations (AS SHOWN IN RISER PIPE SECTION), to accommodate just about every application. Custom riser pipes can also be manufactured to order, just give us a call for details.