Brake vacuum problem - Pontiac GTO Forum
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post #1 of 2 (permalink) Old 10-10-2019, 05:23 AM Thread Starter
 
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Brake vacuum problem

My brakes were bad. 1973 GTO 400, auto, no. 62 heads. I bought one of the all in one kits with booster, master cylinder, proportioning valve. I got the smaller booster for valve cover clearance. ( 9 inch.) Brakes work ok on first push, but no vacuum assist after. Really hard to stop at light. Do I have to add a vacuum can, or do I have to buy the 11 inch stock booster and replace the 9 inch booster. My bad brakes were better than this. Bled all the lines, new hoses in front. Thanks for your help.
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post #2 of 2 (permalink) Old 10-13-2019, 06:19 PM
 
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Originally Posted by gtoguy4 View Post
My brakes were bad. 1973 GTO 400, auto, no. 62 heads. I bought one of the all in one kits with booster, master cylinder, proportioning valve. I got the smaller booster for valve cover clearance. ( 9 inch.) Brakes work ok on first push, but no vacuum assist after. Really hard to stop at light. Do I have to add a vacuum can, or do I have to buy the 11 inch stock booster and replace the 9 inch booster. My bad brakes were better than this. Bled all the lines, new hoses in front. Thanks for your help.
Not sure if you ever got your brakes working. Anyway I put 4 wheel disc brakes and I have a 9" booster. no problems. If you got it fixed please put your remedy, as it may help others when using the search option.

Last edited by RMTZ67; 10-13-2019 at 08:19 PM.
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Exhaust, Suspension, Alignment, Fuel Tank and Brakes.

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