Power brake booster size

[jerkyboy]

I have a '63 with a 7 inch booster that isn't cutting the cake. There is a guy on e-bay that sells new 9 inch boosters for 62-67 novas for $139. I'm worried that the 9 inch booster will interfere with the valve covers. Anyone have a 9 inch booster in a '63 with a small block?? If so, any clearance issues??

Thanks,
Andy

[66RICH]

My buddies 66 w/Heights front clip, disc front, drum rear had the
same problem. He switched to a 7" dual diaphram, and it cured the
problem.
Good luck, Rich

[babydeuce]

The "factory" power booster was 9' single diaphram unit. If you have "tall" valve covers, you will have alot of problems getting them on and off. I have a set of moroso valve covers that are slightly taller than stock units, and I have a heck of time getting it in and out with the 9" booster.

Jack

[Chevy Kid]

Andy, I had a 7" booster with Camaro front discs and stock drum rear. It worked great. When I went to Caddy rear discs, it felt like there were no brakes. The harder you pushed, the worse they got. I called Master Power Brakes and ordered a 9' booster. This completely cured the problem. It was pricey, there are cheaper boosters out there that are probably the same. I used the same M/C.

Now this car will send you through the windshield when you nail the brakes. I don't know about valve cover clearance, I have a 6 cyl. I will find out soon though. A 350 is getting ready to be slipped in! HTH,

Tim