Flowtech Block Hugger Header - SB Chevy w/ D-Port Heads - 1-5/8" - 2-1/2" Collector - Stainless Steel H753C4257 80 lb/in Spring Rate

80 lb/in Spring Rate

1970-1970 GMC C35/C3500 Pickup

Kits come complete with studs / washers / and hex nuts

1977-1979 Chevrolet K30

Trusted by leading engine builders worldwide

Flowtech Block Hugger Header - SB Chevy w/ D-Port Heads - 1-5/8" - 2-1/2" Collector - Stainless Steel H753C4257 80 lb/in Spring RateFlowtech Headers are the perfect combination of quality and value. These block hugger headers fit the popular small block Chevy with fast burn D port heads. This header is constructed from polished stainless steel. Flowtech Performance Exhaust was founded in 1994, by exhaust market expert Gary Biggs, with the mission of delivering high quality performance exhaust at a great value. The mission was successful and in less than two decades Flowtech became