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#1
10-30-2021, 08:10 AM
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New Master Cylinder Sticks Out Above Hood Line
I am currently in the process of restoring a 1970 GTO and upon installation of the new master cylinder, I see that it sticks up above the hood line (it would also hit the hood tach). I bought the brake booster years ago, but I'm pretty sure it was for a 70 GTO/ A body. What could cause this issue? Do I have the wrong brake booster? It seems it's bracket could be at the wrong angle.
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1970 GTO: Atoll Blue, TH400, 400 +.060, small chamber Ferrea big valve fitted # 15 heads, Summit 2802 cam, Iron intake, Cliff Ruffles 850 cfm qjet, Hooker headers, 2.5 mandrel bent exhaust, Race Pro mufflers, 3.73 Safe-T-Track. |
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#2
10-30-2021, 08:13 AM
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Here are some pics.
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1970 GTO: Atoll Blue, TH400, 400 +.060, small chamber Ferrea big valve fitted # 15 heads, Summit 2802 cam, Iron intake, Cliff Ruffles 850 cfm qjet, Hooker headers, 2.5 mandrel bent exhaust, Race Pro mufflers, 3.73 Safe-T-Track. |
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#3
10-30-2021, 08:25 AM
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I’m gonna say it’s some sort of “universal booster. Are the mounting brackets bolted on or riveted?
On my wife’s 65 I ended up taking the brackets off the original m/c and put them on the aftermarket m/c. It had studs holding the brackets. If you don’t want to try that, I think you’d want to find the “correct” booster. Good luck! Murf |
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#4
10-30-2021, 10:05 AM
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I'll be bringing the engine to my builder on Monday. I'll give it a look.
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1970 GTO: Atoll Blue, TH400, 400 +.060, small chamber Ferrea big valve fitted # 15 heads, Summit 2802 cam, Iron intake, Cliff Ruffles 850 cfm qjet, Hooker headers, 2.5 mandrel bent exhaust, Race Pro mufflers, 3.73 Safe-T-Track. |
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#5
11-02-2021, 11:12 PM
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Man we had this same problem on my 72 bird. I ended up having the shop make a bracket for it. I figured it was because I went from a non power brake master to a power brake master but now I’m not sure?
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#6
11-03-2021, 02:34 PM
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70 gto would have the hold off valve mounted underneath the master cylinder?
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72 lemans,455 e-head, UD 255/263 solid flat,3.73 gears,,,10" 4400 converter,, 6.68 at 101.8 mph,,1.44 60 ft.2007 (cam 271/278 roller)9"CC.4.11gear 6.41 at 106.32 mph 1.42 60 ft.(2009) SOLD,SOLD 1970 GTO 455 4 speed #matching,, 3.31 posi.Stock manifolds. # 64 heads.A factory mint tuquoise ,69' judge stripe car. 8.64 @ 87.3 mph on slippery street tires.Bad 2.25 60ft.Owned since 86' |
| The Following User Says Thank You to scott70 For This Useful Post: | ||
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#7
11-06-2021, 01:06 AM
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Yeah that set up is missing some parts, especially if the car has front Disc brakes... Even updated, it should have at least a Combination valve.
hows the rod to the pedal angle?
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
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