Schoenfeld Slip-Over Collector - 1-5/8" Tube Diameter - 3" Collector Diameter, 4 Tubes - Style #8 24232410 Shoulders Adjust from 10" to

Shoulders Adjust from 10" to 73"

1958-1959 GMC FM350

The more spring force exerted on the retainer (as the valve opens)

Made of tough polycarbonate with spring-loaded copper contacts

lifter set

Schoenfeld Slip-Over Collector - 1-5/8" Tube Diameter - 3" Collector Diameter, 4 Tubes - Style #8 24232410 Shoulders Adjust from 10" toStyle 8 Collector for IMCA Modified Adjustable Collector Headers. 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, mandrel bends, exhaust reducers, header gaskets,