Anti-Reversion Mufflers for 602, 603, or 604 by Hendren Racing Engines (priced per pair)
Anti-reversion mufflers specifically designed for use with the GM602, GM603 or GM604 engine to increase low and mid-range torque.
According to Hendren Racing Engines, "In 90% of the applications we have tested, our Anti-reversion chambers/mufflers will produce around 15-20ftlbs of torque more between 2,500rpm to 4,500rpm and 5-10 more horse power in that same RPM range than the Beyea muffler. Overall top-end power levels out at a gain of around 4ftlbs and 4hp. We have also seen significant improvement and similar gains with this muffler on Dynatech, Schoenfeld, and Hedman headers."
These mufflers are lightweight at only 1.5 lbs each. Use with headers that have a 3" collector.
Size: 3" Inlet, 3" Outlet, 8-1/2" Length
Priced by the pair. Also sold individually here.
Note: These mufflers are designed by Hendren and manufactured by Dynatech. Stickers shown were for the picture only as they would burn off during the first use.