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GM LS Swap Cast Iron Exhaust Manifold LS1 LS2 LS3 4.8L 5.3L 6.0L Street Rod (DM-3303)

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$139.99

$ 56 .99 $56.99

In Stock
  • These LS cast iron exhaust manifolds have been designed to hug close to the engine block so they fit into a wide variety of replacement engine swap applications.
  • Their contoured design aims the exhaust directly at the exit port for greatly improved flow.
  • They are cast from high silicon moly ductile iron to provide durability, leak free performance and less under the hood noise than conventional headers.
  • They also feature 304 stainless steel mating flanges to help provide a leak-free installation, and a two bolt exit flange which can be used with OEM style gaskets and fasteners for an excellent seal.


Exhaust Manifold Material: cast iron Exhaust Manifold Finish: Black coated Mounting Hardware Included: No Exhaust Manifold Gaskets Included: No Quantity: Sold as a pair


Joe Kool!
September 3, 2025
These work for me building a 1980 EL CAMINO with ls motor trying to do cheaply but good. Not rich just old retire guy having fun in garage an thes are good quality an will do what I want. THANKS JOE
Richard Lewis
August 23, 2025
Bought these manifold for an LS swap I’m doing on an offer Chevy they fit well and seem to perform better than factory’s great price. Quality is strong and holes all lined up evenly no manifold leaks
Jeremiah
April 19, 2025
Does not fit S10 pickup 5.3 swap.
Ryanm
March 16, 2025
Looks Good, Fit nice, used on Ls swap truck, leaves good room for exhaust and cleared frame
Dennis
March 16, 2025
Sounds so beautiful sometimes it feels like it is not running
Todd
November 12, 2024
These manifolds are great for swaps. They are quite symmetrical. I cut off the two bolt flanges and welded V bands on as I prefer them and the casting was of good quality. The ID is definitely bigger than stock.
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