LS Swap Shorty Headers 1-5/8" x 2-1/2" | Polished

Features For LS motor swap on older Chevy, GM, Pontiac, Olds, Buick models Fits LS based engines (LS1, LS2, LS3, LS6, LS7, etc.) Shorty design for power gain from idle to mid-range RPM Tight tuck-in fit that allows fitment flexibility Fully mandrel bent tubes made of 16-gauge 304 stainless steel Head flanges laser-cut from 3/8-inch thick steel plates Flanges flattened by hydraulic press for precise and leak-free seal Flanges chrome plated for corrosion resistance All joints TIG welded for resistance against cracking and wearing Polished surface for extra protection against rusting Tech Specs Type Shorty Primaries Diameter 1-5/8 in. (42mm) Collector Diameter 2-1/2 in. (64mm) Head Flange Thickness 3/8 in. (9.5mm) Pipe Thickness 16-gauge (1.5mm) Material 304 Stainless Steel Finish Polished Compatibility Fitment Notes NOT DIRECT FIT for stock applications Will NOT fit LS4 engines May require angled spark plug boots for tight clearance If using larger 4L80E or olde