Schoenfeld Flange SB Chevy Crate - 1-5/8" EGXR Fits 1981 to 1989 GM

Fits 1981 to 1989 GM TH700R4 and 1981 to 1991 TH2004R

Fits AFCO arms and most racing upper arms

Waterproof and dustproof with neoprene cap for in-car or underhood mounting

41: 1 gear reduction

carbureted applications on gas or methanol

Schoenfeld Flange SB Chevy Crate - 1-5/8" EGXR Fits 1981 to 1989 GMFlange Thickness is 1 4". 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, and more. Product Description: Header