Schoenfeld IMCA Modified Headers - 1-3/4" Primary - 3-1/2" Collector - Steel - Black Paint - SB Chevy 13199903 Proven Cross Drilled Designs To

Proven Cross Drilled Designs To Optimize Thermal Efficiency

3 1/2" outlet Collector Reducers

a spacer is included to fit BB Chevy

bolt pattern

Optimized street/strip calibration that works out-of-the-box

Schoenfeld IMCA Modified Headers - 1-3/4" Primary - 3-1/2" Collector - Steel - Black Paint - SB Chevy 13199903 Proven Cross Drilled Designs ToProduct Description: Headers IMCA Modified 1. 75 in Primary 3. 5 in Collector Steel Black Paint Small Block Chevy Pair 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