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

Muffler fits International 606 660 656 460 504 560 C263 D188 D236 D282 C221

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ProFab Stainless Steel Muffler - PRO-CHAMBER-350 (priced per each)

3 Inlet / Outlet Anti Reversion Muffler Stainless Steel

THRASHIN Anti-Reversion Exhaust System - Dyna – Blood Eagle Speed Shop

Asphalt Pro Late Model Chevy 602 Crate Engine 1 5/8- 1 3/4 Stepped Exhaust

ProFab Stainless Steel Muffler

Exhaust systems ARE NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES. The following disclaimer is associated with

THRASHIN Anti-Reversion Exhaust System - Dyna- Backorder

GM 604 Crate Engine

hitting Lifters, E85, and Anti-Reversion

Schoenfeld Anti-Reversion Mufflers - Free Shipping on Orders Over $109 at Summit Racing