Description
These 1.6:1 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 very-aggressive cam. They are at the stock 1.6 ratio, but they don’t flex at high RPMs like the stock rockers do.
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 thye stock 1.6:1 ratio but eliminate 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.
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