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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

brakes need oomph

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Old Feb 17, 2004 | 06:12 PM
  #1  
gtex's Avatar
gtex
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brakes need oomph

I recently replaced the booster and the master cylinder in my project. The brakes still require a good bit of effort on my part. The brakes were completely rebuilt at the wheel level no more than about 2000 miles back. Factory Drum/Disc setup.

I'm running a pretty big cam, but not too big on the duration so the vacuum is actually pretty good. It's 20+ while crusing.

Any ideas?
 
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Old Feb 17, 2004 | 07:28 PM
  #2  
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CHtopping.com does drum drilling to improve braking performance, as does praisedynobrake.com sell hipo brake kits.

They could be as good as they get. Mine are terrible as well.
 
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Old Feb 17, 2004 | 11:11 PM
  #3  
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Comegetsome
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Perhaps a vacuum resevoir canister may help with the bigger cam.
 
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Old Feb 18, 2004 | 03:12 AM
  #4  
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What's the vacuum idling in drive while stopped? Easy way to tell if you don't have enough is to put it in neutral next time you coast to a stop and see if it brakes any better.
 
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Old Feb 18, 2004 | 04:46 AM
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Check the vacuum check valve in the booster. You can get vacuum pumps also. I have used some off old GM vehicles to run cruise controls etc.
 
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Old Feb 18, 2004 | 07:15 AM
  #6  
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From: Albuquerque, New Mexico
Greg, are you running disc or drum brakes? Brake shoes are not always arced to the drum, and that'll increase your pedal pressure. If there was a drop or two of water in the brake lines that could be sticking a wheel cylinder. You've done a great job on your truck.
 
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