Jeep 2.5L and 4.0L Harland Sharp 1.65:1 Non-Adjustable Roller Rockers


NOTE! The supply/labor shortage has caused us delays in manufacturing. We cannot guarantee ANY shipping times but we will do the best we can. Accessory orders will ship faster than full supercharger kits.

Jeep 2.5L and 4.0L Harland Sharp 1.7:1 Non-Adjustable Roller Rockers

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These 1.65:1 roller rockers will allow your Jeep, instead of falling on it’s face at 3800-4200rpm, to carry that out to 4600-4700rpm (right where the automatic transmission shifts at) and are best to go with when you have a more-aggressive cam.

These rocker arms have been specifically designed in conjunction with Harland Sharp to provide the correct geometry for the AMC/Jeep inline six cylinder engine family, including the 232, 258, and 4.0L. They provide an actual 1.65:1 ratio (over the stock 1.6:1) in addition to eliminating the loss of lift resulting from flex of the stock weak rocker arms. They will fit the ’91 and newer 4.0L head, and because they are non-adjustable, they are the only known roller rocker that will fit under the stock valve cover with no additional spacers required.

What you get:

  • True 1.65:1 (if you have a stock cam, the 1.7:1 will be best)
  • Fits under stock valve cover without a spacer
  • Additional 1-1.5 degrees of duration
  • Additional 0.0125″ lift


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