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General Discussion / 68' Z/28 Hold off Valve

« on: January 18, 2009, 12:28:50 AM »

Hello fellow car buffs. New member here......Does anybody know what the average time span should be between the build date of the car, and the date of the rear holdoff valve. You know the proportioing valve mounted to the left frame rail under the car. It'a about where the driver would sit. It looks to be brass or bronze and has a brake line going in, and back out to the rear brakes. It has some letters and numbers on it. The car is a 4th week of Jan. 68' build, and if it matters the Engine assembly date is Jan. 3rd 68'. I have heard no more then 30 days, and another person at a swap meet said 65 days?? By the way it is a LOS built car. Thanx for your time eh..... D