Pure Grunt
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The only specialized components required for the Iron Eagle block are the raised-cam timing chain (PN 3146KT) available through Comp Cams and the longer pushrods to compensate for the tall deck height. Dougan's normally specifies custom-length pushrods to perfect the rocker geometry, anyway, and we ordered 'rods from Terry Manton at Manton Pushrods. In this case, one pushrod length happened to work with the 1.6:1 Pro Magnum chromoly steel rockers (PN 1306-16) and both of the Comp Cams hydraulic roller cams we tested (see the dyno test sidebar). If you use a mechanical fuel pump, a longer big-block-type pump pushrod is required. View Related Article
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