COMP Cams Rocker Arms GM LS3 1.8 3/8 Ultra

COMP Cams Rocker Arms GM LS3 1.8 3/8 Ultra

Marsoni

M251S

$320.96

Get it in 3 business days with 1 day shipping. Friday, May 29

COMP Cams Rocker Arms GM LS3 1.8 3/8 UltraNew LS Specific Ultra Pro Magnum Rocker Arms From COMP Cams Increase Ratio And Stiffness Over Stock Rockers, While Also Increasing Lift without The Need To Swap Cams. As LS engines continue to grow in popularity, COMP Cams has expanded its line of Rocker arms to build components specific to LS Applications. LS3 L99 L76 Rectangle Port Head LS ApplicationsSet Of 16 Stud Mount Rockers Includes Poly Locks Requires 3 8" Studs & Guide Plates GM LS Flat 5

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This seems to work very well. I will say that it seems to be pretty important to move the wheel around as soon as you can to distribute the product within the tire. I was held up for a few minutes and the Liqui tube seemed to start to set up in one spot and made the tire out of balance so I had to work quick to get it to distribute to the other parts of the tire. It seems to have worked though and so far the tires are holding air very well. I will be interested to see if it lasts for a long time but so far so good.

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Reviewed in the United States on May 18, 2026