Flowtech- 11705-7FLT Block Hugger Headers for SBC


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Block Hugger Header: Small Block Chevy with D-Port Heads, Tube Size 1-5/8", Collector Size 2.5"; 304 Stainless Steel

Flowtech Headers are the perfect combination of quality and value. These block hugger headers use an oval port design that is compatible with Chevy Fast Burn D-port heads. This header is constructed from polished 304 stainless steel.


  • Block hugger design fits the most popular hot rod applications with small block Chevy motors using the fast burn D-port heads
  • Mandrel-bent tubes provide consistent tubing diameters for smooth flow and increased exhaust velocity
  • Heavy duty 16-gauge tubing for increased strength and durability
  • Smooth transition, 1-5/8” diameter primary tubes are used for increased exhaust flow increasing performance and improving throttle response
  • Machined 2-1/2” collector for maximum strength
  • TIG-welded, machined 3/8” header flange for a leak-free seal and maximum strength
  • Premium aluminum header gaskets included
  • This header is constructed from polished stainless steel
Bolt Size 3/8-16 x 3/4
Brand Flowtech
CARB (California) Compliant No
Collector Diameter 2.50 inch
Emission Code 4
Engine Chevrolet Small Block Gen I
Header Finish Polished
Header Style Block Hugger
Primary Tube Dia. 1-5/8 inch
Product Type Headers
Tube Material 304 Stainless Steel
UPC 090127690796
Part Number 11705-7FLT

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