COMP Cams CL12-600-4 Thumpr 279TH7 Cam and Lifter Kit for Small Block Chevy<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Cam and lifter kit for Small Block Chevy engines </span></li><li><span class="a-list-item"> CL-Kit includes cam， lifters， assembly lube， instructions and decals </span></li><li><span class="a-list-item"> Hydraulic Thumpr: High performance street， stock converter ok， best with 2000+ converter and gears; choppy/thumping idle </span></li><li><span class="a-list-item"> Valve spring upgrade required </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31A3axpomsL.jpg" noproxy>