1964-1988 Chevy GMC LS1 LS2 LS3 LS6 LS7 Block Hugger Shorty Exhaust HeaderDescription Block Hugger style headers are to be used when there's insufficient space because of steering and cross member clearance issues. This LS series engine header has excellent quality and durability to improve vehicle performance. Our headers are tucked in tight due to narrow older frame clearance. They are perfect for tight fit installations. Features Primary Tube Diameter: 1 5 8(41. 3mm) Flange Thickness: 3 8 (9. 5mm) Collector Diameter: 2.
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