SPARK IT UP!

Per­for­mance Dis­trib­u­tors’ D.U.I. HEI Dis­trib­u­tor

Street Trucks - - NEWS -

THERE ARE VAR­I­OUS rea­sons to ditch your ex­ist­ing dis­trib­u­tor. Maybe you want more per­for­mance or ef­fi­ciency, or you’ve ex­pe­ri­enced cat­a­strophic fail­ure. No mat­ter the rea­son, if you’re work­ing with a vin­tage en­gine run­ning an old points-style setup, it gen­er­ally makes sense to up­grade to an HEI (High En­ergy Ig­ni­tion) dis­trib­u­tor.

First in­tro­duced in 1974 by GM, HEI dis­trib­u­tors pro­vided more volt­age and greater spark com­pared to points dis­trib­u­tors, and only re­quired a hot lead for oper­a­tion. Although larger than a tra­di­tional dis­trib­u­tor, the in­te­grated coil-on-cap de­sign made oper­a­tion sim­pler and cleaned up the en­gine com­part­ment. Plenty of af­ter­mar­ket man­u­fac­tur­ers cur­rently make HEI dis­trib­u­tors, but only a few of­fer unique fea­tures that bear men­tion­ing.

Per­for­mance Dis­trib­u­tors’ D.U.I. (Davis Uni­form Ig­ni­tion) dis­trib­u­tors are tuned for spe­cific en­gines and needs, dis­pelling wor­ries about set­ting the tim­ing curve and get­ting you back on the road quickly.

They also fea­ture the lat­est tech­nol­ogy avail­able in the ig­ni­tion in­dus­try and sport pro­pri­etary fea­tures that you’ll only find in D.U.I. dis­trib­u­tors, such as an avail­able model with an ad­justable slip col­lar to fine­tune dis­trib­u­tor depth. Other fea­tures in­clude a Cross-fire dis­trib­u­tor cap and an Ul­tra-poly com­pos­ite drive gear.

A built-in HEI 50,000-volt coil al­lows plug gap­ping up to .055 inch, and with the D.U.I.’S Dy­namod­ule, the in­creased spark and dwell en­sures com­plete and pow­er­ful com­bus­tion. The more com­plete burn means faster start­ing, im­proved fuel econ­omy and smoother idle. When com­bined with D.U.I. Livewires 1,400-de­gree re­sis­tant per­for­mance plug wires, you’ve got a win­ning com­bi­na­tion that will trans­form your ig­ni­tion sys­tem.

Let’s fol­low along to see how Travis Pruis from CTP Con­cepts in­stalled a new D.U.I. from Per­for­mance Dis­trib­u­tors. If you’d like more in­for­ma­tion, check out the info listed in the source box.

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