Belts a'flyin Mike: I agree with most of the suggestions made so far. I used to have the same problem, years ago. The larger pulley will help, but at the cost of slow speed charging. Knowing how you drive, that may not be an issue.:Brow: The problem as I see it: Too much draw on the alternator from just one belt, again the larger pulley may help with more belt contact. I would recommend going to two belts and remaining with the smaller diameter pulley for maximum charging at slow speeds. Another issue is the fact that your engine is able to rev so quickly, the belt may slip just from the inertia of the alternator rotor. With a 250 amp rating the rotor will contain more copper in the windings, and hence, have a greater mass than stock. Another trick I have used in the past, but requires an alternator that is not one wire, is to interrupt the field with a relay activated at full throttle so the alternator is free wheeling, only during maximum acceleration, and still free to charge the battery during other times. Anyway, take a look at my setup in Pueblo, it is not perfect, but, I have had no problems with either charging, or belt tossing, and I have a 165 amp alternator because with everything running my electrical system draws about 95 amps. Good luck, Jim:bglasses:
