Miles Posted September 16, 2006 Share Posted September 16, 2006 I did a search, but didn't find an exact yes or no to the question: Are the brake booster firewall bolt patterns the same for the 72 240Z 7 inch dia booster the 75 280z 8 1/2 inch dia booster? I believe that the MC bolt patterns are the same. I have a manual transmission so the larger 280Z 10 inch booster will definately not fit. The reason I ask is that I have the 79 280zx MC with Toyota 4x4 front calipers and since I am replacing the booster I might try the larger 8 1/2 inch 280z booster for a little more assist when braking. Quote Link to comment Share on other sites More sharing options...
Dave Posted September 16, 2006 Share Posted September 16, 2006 The bolt pattern is different between the 240Z and the 280Z. I have some pictures and measurments here. http://s170049317.onlinehome.us/V8-240z/Files/Datsun/Booster/ Quote Link to comment Share on other sites More sharing options...
Miles Posted September 16, 2006 Author Share Posted September 16, 2006 Dave The 280z booster is out as I don't want to redrill the firewall. Thanks Miles Quote Link to comment Share on other sites More sharing options...
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