HI-6R Multi-Spark CD IgnitionMulti-Spark CD, for race, street, up to 14. 5: 1 compression ratio, nitrous-oxide, supercharged and turbo. More HP, torque, crisper throttle response! For 4, 6, 8 cylinder with distributor. New HI-6R (Part Number 6000-6400) delivers higher spark-gap current* than comparable digital CD ignitions!Built-in timing retard available with optional Control Module, Part Number 6000-6425. New "Plug-n-Go" universal harness included. (For vehicle-specific Plug-n-Go harness applications see here). Built-in tach accuracy check. Sequential rev limiting stops engine damaging "popping and banging" at rev limit. New, bigger rotary switches with precise "Click-In" detents for easy rev limit adjustments. No "chips" needed. Adjusts in 100 RPM increments. Shock mounts included for race conditions. Points, Mag, or Module triggered. Fully potted with new, soft urethane for heat, dirt and moisture protection. NEW! Easy Checking for System Problems! No guessing! Built-in flashing codes tell what the problem is. Checks coil, ground, power supply, loose or broken wires and the ignition unit itself!Exclusive Cross-Fire protection, for supercharged or turbo applications. CARB E. O. , D-225-52 *Must use Crane FireBall LX-92 coil Part Number 730-0892 for maximum ignition output. Specifications Operating voltage 6 to 18 volts, reverse polarity protected, negative ground only Current draw 7. 0 amps max at 10, 000 RPM RPM operating range 12, 000+ RPM (with rev limiter disabled). RPM limiter range 600 to 9, 900 RPM in 100 RPM increments RPM limiter accuracy 30 RPM Timing accuracy 0. 5 degrees from 500 to 9, 900 RPM Multiple Spark Duration 20° crankshaft rotation below 3, 000 RPM. Maximum 12 sparks per seq. with 1 millisecond interval between sparks. Primary voltage output 450 volts Primary energy output 1200 millijoules/sequence Peak spark gap current 380 milliamps with LX91 coil, 510 milliamps with LX92 coil Dimensions 8"L x 4-1/2"W x 2"H, 4-1/2 lbsPit Stop USA offers Crane Cams HI-6R Race Ignition Box 6000-6400 at low everyday prices. Be sure to check out all of our products from Crane Cams including Crane Cams Ignition Boxes and Controls.