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Old 06-22-2010, 07:22 PM   #3
mbgmike
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Join Date: Aug 2005
Location: Pasadena,Tx /Pto Pta DR
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Re: 7" vs. 9" vacuum booster for brakes...which is better?

Quote:
Originally Posted by 67Dad View Post
67-c10...we are adding power brakes. Apparently the conversion can be either 7" or 9". Do any of you have experience with which is best? 7" presumably leaves more engine access room, but we have a straight 6 292. Does 9" give much more "boost"? Thanks in advance!

Mark
Actually the unit that came on it was 11" in dia.
You have more boost. Sometimes they use a dual diaphragm booster in the smaller sizes to gain more room. If you have any questions feel free to call or drop buy we have done a lot of conversions.

Mike
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