These Hooker BlackHeart cast iron exhaust manifolds feature a 2.25-inch outlet and a natural cast finish, designed to sit close to the engine block for a wide range of replacement and engine-swap applications. The contoured design directs exhaust flow towards the exit port, enhancing performance. Made from durable cast iron, they ensure long-lasting, leak-free operation while reducing under-hood noise compared to traditional headers. Additionally, the shorty design allows for exhaust tubing to be routed closer to the frame or floor pan, maximizing ground clearance.

8501HKR Blackheart LS Cast Iron Exhaust Manifolds Features:

• Tight tuck/block hugger design for broader fitment for most popular chassis
• Free-Flowing for great performance
• Hi-Silicon-Moly Ductile Iron construction
• Nickel Plated steel mating flanges included (fasteners and gaskets are not included)
• Excellent corrosion resistance
• 2 Bolt exit flange configuration works with factory gaskets and fasteners

Fitment Notes:

• Intended applications for this product are the retro-fit installation of LS engines into popular Cars and Truck chassis
• Compatible with All GM LS (except LS7/LS9) Engine Swap Applications
• Not Compatible with 2004-2006 GTO Starters/Bellhousing
• Validated for Fitment on 1970-1981 GM F-Body, 1982-1988 GM G-Body and 1968-1972 GM A-Body with LS Engine

Emissions Note:

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART