Aussie GMC C3500

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Clinton

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I'm thinking I just need to swap it around like so, but correct me if I'm wrong:

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Clinton

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Hi thanks R422b, that would be exactly what I needed, only I've taken the lines off now and making new ones. Shipping was $80!! Must be by the Queens Carrier Pigeon Service.

Actually, my drawing was wrong... the GMC master is also the same as the Ford in that the front outlet controls the rear, not the front brakes like I thought.

It makes sense given the larger 1/4 line has the larger outlet thread size too.
 

Clinton

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It just depends who they use to ship it. I purchased two brake fitting yesterday for about $3US each, postage was about $5 each, so not exactly cheap but at least reasonable. Cheaper than I could buy it here if I went to the brake shop - that's if they even have those sizes in stock which is unlikely.

The whole fractional size thing is so confusing to me, especially when half the car is metric! But I'm not going to start an argument on a US forum LOL.
 

R422b

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I agree.
I like my 2002 tahoe because it has verry few fractional. Its almost all metric.
 

Terrick down Under

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When I started my apprenticeship as a Fitter/Machinist/Toolmaker, i had to learn both metric and imperial. So now i think in kilometers but drive to miles per gallon, i can visualize 0.040 is close enough to 1 mm, but prefer meters to feet. I measure in kilograms and talk about tons!
 

Moparmat2000

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Yeah the SAE and metric mish mosh on these is maddening. However, i can explain why pretty easily. Everything was SAE thread, and as the U.S. automakers transitioned to metric, they would transition only as they redesigned vehicles and components so they could absorb the costs. If the tooling is churning out a current part, no need to change to metric until a redesign right. This is the reason the GMT400 gasoline engines are SAE, they were using tooling from the 1950s lol. No sense changing it, until the next generation of engines was designed.

Mopar was the same way. The Ram pickups were redesigned in 1994 and the truck went metric, however the Magnum series of V6 and V8 engines were still being made on early 1960s tooling and stayed SAE thread until the crappy mercedes sourced DOHC V8 and mopar designed Gen lll Hemis came out. Ford had the same thing with some things too. I have a 1999 Ford Explorer 8.8 rear i cut down for a project car. Everything on it is SAE thread including lug studs, and brake lines. Only thing i found on it thats metric is the bolts holding the disc brake calipers on lol.
 
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Clinton

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So I've made up one power steering line, if it doesn't leak I'll be stunned. I'm rerouting the other power steering lines over the engine instead of under the fan and one other needs AN fittings. Making up brake lines too for the new master, what a pain they can be.

8mm engine mount spacers are made but need to put them in, I think that's going to be a tough job. I ordered another oil pan as I dented mine pretty bad jacking it up. It could be okay but not going to risk it.
 
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