Hooker BlackHeart Rear Dump Exhaust Manifolds with 2.5” Outlet for GM Gen V LT Engines

Invest in top-notch strength, quiet operation, and a leak-free seal within your GM Gen V LT engine via these rear dump exhaust manifolds! Courtesy of Hooker BlackHeart, these manifolds are made from a special Hi-Silicon-Moly ductile iron blend. Not only does this give them outstanding durability, but it also means they’re highly corrosion resistant. Plus, by giving the outlet a 2.5” diameter, you get a noticeable boost in flow.

Features and Benefits:
- “Rear Dump” Exhaust Manifolds with Tight-Tuck Design
- Ideal for GM LS Engine Swaps
- Available with Natural or Black Ceramic Finish
- Cast from Hi-Silicon-Moly Ductile Iron
- Highly Durable & Corrosion Resistant
- Creates Exit Between Standard Swap & Center Dump Manifolds
- 2.5” Diameter Outlet Boosts Flow
- Great with Hooker Engine Swap Mount Plates
- Complements Holley Engine Swap Oil Pans
- Includes Mating Flanges, Gaskets, & Hardware

You can make the manifolds stronger by opting for a black ceramic finish that’s highly heat resistant. Or you can get a natural, bare finish that matches the factory look. Either way, you get a complete assembly with mating flanges, MLS mating flange gaskets, and mating flange hardware. For the best efficiency, pair them with Hooker engine swap mounting plates and Holley engine swap oil pans.

Vehicle Fitment:
- 1965-1995 Ford Mustang
- 1966-1977 Ford Bronco
- 1948-1979 Ford F-100
- 1960-1987 Chevy C10
- 1988-1998 Chevy/GMC C/K

Additional Notes:
- Ceramic-coated manifolds require several heat cycles to fully cure before they can withstand extreme heat. Prior to putting the vehicle into service, they should undergo a series of 4 to 5 intermittent heat cycles to "set" the coating. An incremental increase in run duration and throttle angle should be added to each successive cycle; initial and final run durations between approximately 1 and 7 minutes will be sufficient to set the coating.
- Breaking in an engine while using the ceramic-coated versions of these manifolds will most likely result in damage to the coating and void all warranties providing coverage to it. Hooker recommends using bare cast-iron manifolds or an old set of headers to break-in engines to avoid coating damage.
- Certain engines with knock sensors on the sides will need to have the passenger side clocked for extra clearance. Unplug the sensor by pulling the gray clip back and pressing in the center. Use a 13mm wrench to loosen the knock sensor and turn. Once complete, be sure that the wire is away from the manifold. A heat sleeve or tape is recommended at a minimum for the best results or you can use the Hooker heat shield (P/N: BHS519).