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Topic: Thread size/pitch on brake line fittings

in Forum: C3 Handling Components

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Thread size/pitch on brake line fittings (1/2)
10/6/17 4:51pm

gelpilot
Former Member
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Broken Arrow, OK - USA

Vette(s):
1974 Red Metallic convertible, 350, 4-speed.

Joined: 3/3/2016
Posts: 13

I'm attempting to replace my existing proportioning valve with a new adjustable valve, but it has 5 connections which are all 1/8th inch NPT. I'm trying to come up with exactly what the ends of the various brake lines running into the old block are but not having much luck down at my Ace Hardware.

Anyone have info or specs on what these fittings are?

Thx,

George Lehmann

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George Lehmann

Broken Arrow, OK

74 Metallic Red Convertible

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Re: Thread size/pitch on brake line fittings (2/2)
10/6/17 10:12pm

73shark
Limited Member
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.

Joined: 7/9/2003
Posts: 866

Since brake lines are a double flare fitting, I doubt that they are a NPT thread. Might need an adapter to go from the new valve to the brake thread.

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1973 L-82 4 spd

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