are my front/rear brake lines crossed? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

drdata · 11-16-2009, 02:46 PM

Quote:

Originally Posted by Burt4x4

Here is what the 1Ton dual diapram Booster/Master looks like. The masters resavors are the same size but the lines are swaped...
. . .

When I bought the parts I used 72K304x4 Pickup to bolt right into my 72K5 and it doubled my braking power.

I am interested. Thanks for your post.

To confirm, are you saying that a 1 ton booster and MC will bolt right onto the 72 1/2 ton booster mount with no modifications needed to the brackets or rod length? Sounds like the only issue was reversing the line attachments, which even I can handle.

Did you also swap the proportioning valve?

Regards

**jaros44sr** · 11-16-2009, 02:56 PM

I thought I said that up in post # 7

drdata · 11-16-2009, 03:56 PM

Quote:

Originally Posted by jaros44sr

I thought I said that up in post # 7

In fact you did. At the time it did not seem this was strictly a MC/booster swap. I was of the mind that I would then need to swap brake calipers, backing plates, etc, to complete the 1 ton upgrade.

I did read a faq on upgrading brakes, but it seems there were so many options and none were as straight forward as "bolt on a new MC/booster".

Hence my followup questions if the 1 tone MC/booster is really just a bolt on upgrade while the rest stays the same.

regards

**jaros44sr** · 11-16-2009, 04:44 PM

I was thinking the cost that you will have to get it right would be the same if you set it up as a one ton, but do the calipers later. Calipers have a problem fitting on 15" wheels, some grinding required or go with larger wheels

Just kidding about the "I told ya"

Burt4x4 · 11-16-2009, 05:24 PM

Quote:

Originally Posted by drdata

I am interested. Thanks for your post.

To confirm, are you saying that a 1 ton booster and MC will bolt right onto the 72 1/2 ton booster mount with no modifications needed to the brackets or rod length? Sounds like the only issue was reversing the line attachments, which even I can handle.

Did you also swap the proportioning valve?

Regards

Yes & No ~ look for a post from AJ, can't recal the exact title but 1Ton Brake Upgrade should work in the search here. Depending on the style of Booster mount you have will make or brake the "bolt right in" answer. THe post that AJ provided out lines the different booster mounts. My 72K5 the 1Ton master/booster did bolt right in but I had to modify the support brackets as the 1Ton booster is FATer than the 1/2 ton.
good Luck
Burt

11-16-2009, 02:56 PM	#2
jaros44sr Senior Member Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,856	Re: are my front/rear brake lines crossed? I thought I said that up in post # 7 __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim

11-16-2009, 04:44 PM	#4
jaros44sr Senior Member Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,856	Re: are my front/rear brake lines crossed? I was thinking the cost that you will have to get it right would be the same if you set it up as a one ton, but do the calipers later. Calipers have a problem fitting on 15" wheels, some grinding required or go with larger wheels Just kidding about the "I told ya" __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim Last edited by jaros44sr; 11-16-2009 at 04:44 PM.



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