Hooker BlackHeart Rear Dump Exhaust Manifolds with SBC-Style Exit & 2.5” Outlet for GM Gen V LT Engines

Add a touch of the small block-Chevy within your GM Gen V LT engine via the Hooker rear dump exhaust manifolds! These manifolds are not only great for forming a leak-free seal, but they also operate blissfully quiet. It’s thanks in part to the Hi-Silicon-Moly ductile iron blend, lending it impeccable strength at the same time. Topped off with a 2.5” outlet, it’s a great choice for boosting flow while building on your ride’s style.

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 pick from two finishes: a natural finish similar to the factory look or a black ceramic coat that’s highly heat-resistant. The manifolds also come with nickel-plated steel mating flanges, MLS mating flange gaskets, and mating flange hardware. This simplifies installation and, when paired with Hooker engine swap mounting plates and Holley engine swap oil pans, results in excellent performance.

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:
- Not compatible with 2004-2006 GTO starters/bellhousings.
- 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.