[Chevelle-list] Vacuum Canister

[Dale]

I'd tend to agree with Karl.  Low vacuum at the booster would create a hard
pedal, ie., pressing brake pedal gives a hard feel and no stopping power.  A
soft pedal, or one that feels mushy, is usually air the lines or master
cylinder.  I did a quick Google search and found
http://autos.yahoo.com/maintain/repairqa/brakes/ques145_8.html among others.

Crane Cams (and probably others) have vacuum canisters to 'store' vacuum for
power brakes.  Crane's is $50 or so, part #CCA-5200 at Summit.  If you have
power steering the Hydratech braking system should solve your answers.
http://www.hydratechbraking.com might be more than you want to get into but
I hear they are a fantastic system.  Essentially uses your power steering
pressure and fluid instead of engine vacuum.

Dale McIntosh
1966/67 Chevelle Reference CDs
ACES #1709/TC GOLD #92

-----Original Message-----
From: chevelle-list-bounces at chevelles.net
[mailto:chevelle-list-bounces at chevelles.net] On Behalf Of Karl Groves
Sent: Friday, April 13, 2007 4:55 PM
To: 'The Chevelle Mailing List'
Subject: Re: [Chevelle-list] Vacuum Canister

Its been a while since I ran a monster cam, so I could be imagining things,
but my brakes were NOT soft.
I ran a 305 (advertised) duration cam in a 355 and the pedal was hard. Not
enough vacuum means not enough power assist from the booster.

Someone please correct me if I'm wrong.

Karl Groves
Master Certified CIW
http://www.karlcore.com

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> -----Original Message-----
> From: John [mailto:malibuss at shaw.ca]
> Sent: Friday, April 13, 2007 5:04 PM
> To: The Chevelle Mailing List
> Subject: [Chevelle-list] Vacuum Canister
>
> Hi Guys....I did the cam swap and now I only have about 10-11
> inches of vacuum,which isn't enough for my vacuum assist
> brakes...They don't feel right ..The pedal is very soft
> now...I don't know much about vacuum canisters so am looking
> for information..maybe a web link where I can read up and
> understand about them..If anyone has info I would greatly
> appreciate it...Thanx John Palmer
> 66 Malibu
> 327 4 speed
>
>
>
>






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