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Rick Bollinger · 12-22-2018, 11:37 PM

I measured my booster today and it is a 9" not a 11" like I thought. I believe it is a single diaphragm. I have around 15-18 inches of vacuum so which is better the 9" or 11"? Here are pictures of what I have. going with stock "ish" conversion kit with GM calipers upgraded ball joints and tie rod ends 71-87.
Thanks Rick

12-22-2018, 11:37 PM	#9
Rick Bollinger Registered User Join Date: Mar 2018 Location: Colchester IL Posts: 284	Re: Will I be happy with this disc brake conversion? I measured my booster today and it is a 9" not a 11" like I thought. I believe it is a single diaphragm. I have around 15-18 inches of vacuum so which is better the 9" or 11"? Here are pictures of what I have. going with stock "ish" conversion kit with GM calipers upgraded ball joints and tie rod ends 71-87. Thanks Rick Attached Images