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

Call back to the roots of your GM LS engine with these rear dump exhaust manifolds, featuring a small-block Chevy-style exit! These manifolds by Hooker BlackHeart give LS engines incredible strength and a leak-free seal all without noisy operation. To make this possible, they’re cast from a Hi-Silicon-Moly ductile iron blend which is exceptionally strong and corrosion resistant. By using a tight-tuck design as well, they create an exit between standard swap and center dump manifolds for a compact fit.

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

The manifolds come with nickel-plated steel mating flanges, MLS mating flange gaskets, and mating flange hardware. Together, they ensure a straightforward installation with extra flow thanks to the 2.5” diameter of the outlet. For a personal touch, you can also get them in a natural finish for a factory-style look or a black ceramic one for extra heat protection. Pair them with Hooker engine swap mounting plates and Holley engine swap oil pans for the best performance possible.

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.