Metallic linings are a rare bird, and most have long since been refitted to organic. The metallic lining uses a series of 4 (IIRC) sintered iron pads on the brake shoe. They use a lined drum to reduce the wear. I believe the MC bore is a different size because you needed more force to stop the sucker, especially when the shoes were cold. If your brake shoes look like a normal shoe, you have the exc. HD metallic. That would be my guess. I had a 66 many years ago with the OE metal, and it was a two footed stop on a cold morning.
Glenn






From: "gm2" <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: <[EMAIL PROTECTED]>
Subject: Re: [Chevelle-List] Master cylinder replacement
Date: Wed, 15 Jan 2003 04:43:41 -0600

Thanks for the site. It has a lot of good info. Now can anyone tell me
what the difference is between heavy duty
brakes w/metallic linings and non-heavy duty brakes with metallic linings.
How can I spot the difference on my car?



----- Original Message -----
From: "Richard Milkiewicz" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, January 14, 2003 9:42 AM
Subject: Re: [Chevelle-List] Master cylinder replacement


> The single reservoir you have sounds original. I suggest going to a duel
> reservoir and a power brake booster. If your single fails your out of
luck.
> With the duel you'll at least have one set of brakes. Front or back.
Depends
> on what circuit goes out. Try this site.
> http://www.hotrodssuperstore.com/maspowbrak.html
>
> Rich
> "66 Malibu
> ACES # 5066
> ----- Original Message -----
> From: <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Monday, January 13, 2003 4:25 PM
> Subject: [Chevelle-List] Master cylinder replacement
>
>
> > Hi,
> >
> > I went to back my 64 Chevelle out on Saturday and noticed that I had no
> brakes left. What little fluid was left in the master cylinder had leaked
> out and it was now empty. Good thing the emergency brake still worked.
> >
> > Would I be better off replacing the whole master cylinder or should I
try
> a re-build kit? My current master cylinder has the screw on cap while the
> replacements seem to have the clip that goes over the cover. Which one is
> correct for a restoration?
> >
> > Napa auto parts lists 2 types of master cylinders. One is for heavy duty
> brakes w/metalic linings and the other is for non-heavy duty brakes with
> metalic linings. What is the difference and how can I tell what is on my
> car? I have 4 wheel drum brakes.
> >
> > Napa also has the power booster for the brakes (87.00) which I would
also
> like to add. It doesn't look like the AC/Delco ones in the Chevelle
> catalogs that go for about $230.00. What is involved in adding this to
the
> car?
> >
> > Thanks,
> >
> > Gary
> >
> >
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>
>
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