Schoenfeld Header Flange - 5/16" Thick - 1.938" Round Port - Small Block Chevy 2010165 this makes these manifolds 75%

this makes these manifolds 75% thicker to combat cracking due to high exhaust temperatures

Will Fit Most Domestic Carburetors (Chrysler

Radiator with -10AN O-ring inlets and 1-1/2" outlet is 20-1/2" wide x 18-1/2" tall (including outlet neck) x 2-3/8" thick core

Pulse Width Modulation controls fan(s) speed from 0-100%

7 or 8-series ignition

Schoenfeld Header Flange - 5/16" Thick - 1.938" Round Port - Small Block Chevy 2010165 this makes these manifolds 75%Product Description: Header Flange 0. 313 in Thick 1. 938 in Round Port Steel Small Block Chevy Sold Individually Started in 1974, Schoenfeld is known for custom fabricated headers for all forms of circle track racing. Schoenfeld Headers is the worlds largest manufacturer of circle track headers, but they specialize in a variety of high quality exhaust parts, including turn downs, extensions, tubing bends and elbows, race mufflers, insert mufflers,