40 Series - 2.50 Offset In / 2.50 Offset Out - Aggressive Sound 1974-chevrolet-g20-van-esi7926355 600 in Long - 0

600 in Long - 0

Pulley Kit - 2 Groove V-Belt - 30 Percent Reduction - Aluminum - Natural - Small Block Chevy - Kit

010 in Undersize - Ford Coyote - Kit

The secret to Earl's Vapor Guard hose is in its layers

or partnered with products from other Holley brands we can give you the edge you need over the competition

40 Series - 2.50 Offset In / 2.50 Offset Out - Aggressive Sound 1974-chevrolet-g20-van-esi7926355 600 in Long - 0The Original 40 series muffler delivers an aggressive exterior and interior tone. If you're looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.