Performance Distributors has applied its years of ignition knowledge to the popular ZZ series of crate engines with their new ZZ Crate Engine D.U.I. Distributor. This new D.U.I. (Davis Unified Ignition) is specifically designed for the ZZ-454, and the ZZ-502. This drop in distributor has the exact advance curve and Melonized distributor gear GM recommends for these engines. The distributor comes complete, including the dependable Street/Strip D.U.I. Coil and Dyna-Module, which allow you to open up your plug gaps to 0.050 to 0.055 inches, burning your fuel more completely.
The newest distributor in the Pertronix line is this plug-and-play billet unit that features the patented Ignitor III electronic ignition module. The housing is CNC machined from 6061 T-6 aluminum and then polished to a high luster. Additional features include a simple two wire hook up with no external components required, tempered 0.500-inch diameter shaft with low torsion displacement; an upper ball bearing and lower self-lubricating oil-impregnated copper powder metal bushing and a heat-treated gear. The distributors come with a factory-set performance curve, a mechanical advance limiting adjustment, and small diameter, high dielectric strength cap and rotor for installations with tight firewall clearance.
Procomp Motorsport's new big-block aluminum cylinder heads feature a 320cc intake runner with a 115cc combustion chamber volume, 2.250 intake and 1.880 exhaust valve package. Features include stainless steel, one-piece swirl-polished undercut valves, high-performance valve springs (flat tappet or roller), chromemoly retainers, 10-degree valve locks, screw in studs and guide plates. Procomp heads come ready to install right out of the and will support up to 800hp.
Proform's race-series 650 to 1,050 cfm carbs feature a high-flow aluminum main body, adjustable screw-in air bleeds, high-rate air-flow section design, solid billet construction, Teflon coated throttle shafts, sight glass windows and a billet throttle base plate. These carbs use standard service and tuning components. High performance down-leg boosters (except 650), timed and full vacuum tubes for accessories and tuning, power valve blowout protection and slip-link mechanical secondary linkage are a few more features. They are ready to run right out of the box and are available with mechanical or vacuum secondaries.
Proform/Specialty Auto Parts