TIME-TESTED, FRESH LOOK
be treated to the latest and greatest the Indiana engine builder has to offer. A competition-ready, 391 ci Cummins is built around the use of Scheid’s billet-aluminum dry block, which accepts cylinder liners, has been fire-ringed, and sports a factory 6.7L Cummins crank, billet-steel rods, and low-compression Diamond Racing pistons. A high-flow, 12-valve billet-steel head resides up top and anchors to the block by way of ARP 14mm head studs.
SIGMA PUMP & 5X35’S
For its unmatched injection rate, the Sigma is still king in the Super Stock class. The cast-aluminum body, 16mm plunger pump hanging off the side of Todd’s engine provides more than enough fueling to clear 3,000hp on the dyno. The Sigma receives its fuel supply from the back side of an Aviaid two-section wet sump oil pump. Obscene amounts of fuel make it in-cylinder thanks to oversize, 0.120-inch injection lines and a set of Scheid’s billet, triple-feed body injectors, equipped with 5x0.035-inch nozzles.
120 PSI OF BOOST
A two-stage, triple-turbo configuration comprised of three Hx82-based journal bearing Holsets with billet compressor wheels handles boost production. Thanks to great flow through the billet cylinder head, a relatively tame (for Super Stock), 120 psi of overall boost is all that’s necessary to make the kind of power that’s needed to run at the front.