These are the S40196 Harland Sharp Roller Rockers Made in the USA. These Harland Rocker Arms are good for 9 plus horsepower across the entire rpm curve. They are great in reducing friction at the pivot point and at the valve tip, which also greatly reduces valve guide wear.
Check out this video as well to see the HP gains of these rockers • Do Roller Rockers Make... This video is also a great way to see how to change a valve cover gasket.
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Harland Sharp (S40196) 1.6:1 Ratio Rocker Arm Pedestal Mount for 4.0L Jeep amzn.to/2CzZK44
Harland Sharp S40196A Jeep 4.0L Rocker Arm 1.6 Ratio Adjustable amzn.to/3f2pZDG
Fel-Pro VS50458R Valve Cover Set amzn.to/2WvJUQh
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24 авг 2024