Anti-Reversion Muffler for 602, 603, or 604 by Hendren Racing Engines (priced per each)
Anti-reversion mufflers specifically designed for use with the GM602, GM603 or GM604 engine to increase low and mid-range torque.
Updated%20for%202020!%26nbsp%3B%20Anti-reversion%20mufflers%20specifically%20designed%20for%20use%20with%20the%20GM602%20or%20GM604%20engine%20to%20increase%20low%20and%20mid-range%20torque.%20Designed%20by%20Hendren%20Racing%20Engines%20and%20manufactured%20by%20Pro%20Fabrication%20Headers%20and%20Exhaust.%20According%20to%20Hendren%20Racing%20Engines%2C%20%22In%2090%25%20of%20the%20applications%20we%20have%20tested%2C%20our%20Anti-reversion%20chambers%2Fmufflers%20will%20produce%20around%2015-20ftlbs%20of%20torque%20more%20between%202%2C500rpm%20to%204%2C500rpm%20and%205-10%20more%20horse%20power%20in%20that%20same%20RPM%20range%20than%20the%20Beyea%20muffler.%20Overall%20top-end%20power%20levels%20out%20at%20a%20gain%20of%20around%204ftlbs%20and%204hp.%20We%20have%20also%20seen%20significant%20improvement%20and%20similar%20gains%20with%20this%20muffler%20on%20Schoenfeld%20and%20Hedman%20headers.%22%20These%20mufflers%20are%20lightweight%20at%20only%201.5%20lbs%20each.%20%26nbsp%3BUse%20with%20headers%20that%20have%20a%203%22%20collector.%20%26nbsp%3B%20Size%3A%203%22%20Inlet%2C%203%22%20Outlet%2C%208-1%2F2%22%20Length%20Priced%20per%20each.%20%26nbsp%3B
GM 604 Crate Engine
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GM 604 Crate Engine
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ProFabrication, Inc - We are happy to announce our new stainless Pro-Chamber 350 anti-reversion mufflers are complete. We can't thank Hendren Racing Engines enough for all of their hard work in helping
