How large is the cap on a DUI Distributor?
The DUI Distributor cap is exactly the same dimensions as a GM HEI cap which measures 5 1/4″ in diameter where it attaches to the distributor housing. Overall it is about 1 1/2″ larger than most stock and points style distributor caps. Q: What information do you need to custom curve the distributor for my application? A: We need information about the vehicle and engine such as cam duration & lift, compression ratio, carburetor size, vehicle weight, towing weight (if applicable), maximum rpm, transmission and octane of fuel. If you have a supercharger, we need to know the maximum amount of boost it produces. Also, if you run a nitrous kit, we need the horsepower rating for the system you are running. Q: What type of spark plugs do you recommend with your systems? A: In most applications, we recommend using Autolite Platinum Spark Plugs. These plugs have worked very well with our Distributors and Firepower Ignition Kits. You should retain the same heat range your engine calls for but ope
