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LS1 Cathedral Port Cylinder Head
Fits:
ANY Cathedral Port Heads and will adapter to ANY rectangle port intakes, supercharger or blower.
Note: Will not fit raised port LS7 intakes.
Package Includes: 2 adapter plates (1/2" thick) with 8 O-ring seals.
Made in CN, billet aluminum.
James Madison
Reviewed in the United States on March 4, 2025
Looks good. Proper dimmensions
Derek B.
Reviewed in the United States on February 1, 2025
"Compatible with ANY Cathedral Port Heads and will adapt to ANY rectangle port intakes" is not true by any means. The included bolts bottom out in the head before becoming tight on my intake. I ordered and used M6-1. X 60mm hex bolts and this fixed my problem.Again this is on my set up and it could be different for you. Just giving a warning that the "ANY" they are stating isn't true as it didn't work for me. Adapters line up just fine and holes are where they should be. Just be ready to buy bolts if you are running anything like me.Intake I used:" https://www.amazon.com/dp/B0C77NJ45V?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1 "Bolts I used: " https://www.amazon.com/gp/product/B0DFYL67SC/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 "
TheLastAndTheCurious
Reviewed in the United States on January 25, 2024
The main reason to use these is to fit a smaller ls3 style intake or a square port blower. You probably won't make more power than a TBSS or truck intake. If you're running boost then these will be fine, the sharp turn at the top and bottom of the adapter won't matter as much. Comes with o rings for the bottom side that mates to the head.Pics are of a 317 head from an lq4. They are about 1/2" thick.
Nequon Keemp-High
Reviewed in the United States on March 30, 2023
This was the right part that I need it fit exactly, but the screw holes that are cut at the wrong angle and I was unable to install
Mike B Peterman
Reviewed in the United States on December 12, 2023
Great fit and includes gaskets.
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