Power brake question

[j_cst_10]

First off, I want to say thanks for the great tech support this sit has to offer, I will be a paying member shortly because I have some parts to sell and possibly a truck.

The question: Is there any difference between a power booster from a '70 with drum brakes or a booster from a 72 with discs?

The reason is I have a 72 with disc brakes that I wanted to swap on my 70 and I purchased a whole power assisted booster/master cylinder set-up off of a 72 to have power brakes. I am unsure now what I want to do with the 72 and wanted to see what my options are.

I want power brakes on my 70 regardless. Can I just switch master cylinders on the booster and use it for the drum '70?

[68gmsee]

Since you have all the equipment, swap it out and give it a try. It's really not that difficult to convert.

Keep the same master cylinder and proportional valve from the 70. Just unbolt it from the firewall and without removing the brake lines, carefully move it forward to give you enough room to install the booster and bracket.

Don't forget you also have to change the pushrod. This is probably the harder thing to do on this conversion since you have to work upside down under the steering column.

[El Jay]

Here's how it's done, complete with some most excellent pictures.

http://67-72chevytrucks.com/vboard/s...d.php?t=221598
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[j_cst_10]

Man, this site is pretty damn good I must say.

[Longhorn Man]

i know it has been done... but I also know that when I tried it on my one ton, it was a no go. Tried it a few times.... been a few years now though ('02) and I have no idea what the problem was.