Pontiac GTO 2004-2006 The Modern Goat

brake booster questions

Old 01-19-2010, 11:03 PM
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Default brake booster questions

I recently swapped a GTO brake booster into a project vehicle of mine and have two questions.

1) What size are the two outlets on the resevior that the two brake lines bolt into?

2) The same two outlets. Which outlet is for the front brakes and which for the rear brakes?

Thanks for any help!
Old 01-20-2010, 06:09 PM
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Any help would be appreciated!!!!
Old 01-20-2010, 10:53 PM
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try ls1gto.com
Old 01-31-2010, 03:00 PM
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All I can tell you is they are metric, the front hole is larger than the rear hole (had a large line coming out of the front hole going to the ABS block and a small line going to the ABS block.

The front hole (larger one) works the rear brakes and the rear smaller hole goes to the front brakes.

Didn't notice where you are located but I do have spare parts if you need them

The small lines are very close to 3/16 line and the large one is close to 1/4"... Not sure what the change over size to metric is though
Old 01-31-2010, 08:43 PM
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Originally Posted by mark21742
All I can tell you is they are metric, the front hole is larger than the rear hole (had a large line coming out of the front hole going to the ABS block and a small line going to the ABS block.

The front hole (larger one) works the rear brakes and the rear smaller hole goes to the front brakes.

Didn't notice where you are located but I do have spare parts if you need them

The small lines are very close to 3/16 line and the large one is close to 1/4"... Not sure what the change over size to metric is though
Thanks for the input!!!
Old 02-03-2010, 12:46 AM
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yeah on the master.. line closest to the front of car is the rear.. line closest to the firewall is the front..

not sure on sizes


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