I'm confused... *brake issues* - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1BadSS · 01-15-2007, 10:19 PM

I've read that on some trucks the studs on the firewall are spaced differently, 3 3/4" and 4" of spacing, but I keep getting told a delco unit is 4" spacing on the firewall brackets while a bendix unit is 3 3/4" spacing on the bolt pattern. Also keep getting told I can use a whole delco setup?! How does this work if the bolt pattern is different?

**PICKMUP** · 01-15-2007, 10:33 PM

The bolt spacing, on the firewall side of the brackets is the same on all of our trucks. It is the spacing of the bolts from the booster to the outside of the brackets that is slightly different.
Get a complete, correct system, off a truck that came with the same type brakes you want to run...i.e. 1/2T DB. Don't mix-n-match, unless you really know what you are doing, or you will get in trouble and be asking questions on here forever...and trust me, you will get some completely wrong answers, every time.

1BadSS · 01-15-2007, 10:47 PM

Quote:

Originally Posted by PICKMUP

The bolt spacing, on the firewall side of the brackets is the same on all of our trucks. It is the spacing of the bolts from the booster to the outside of the brackets that is slightly different.
Get a complete, correct system, off a truck that came with the same type brakes you want to run...i.e. 1/2T DB. Don't mix-n-match, unless you really know what you are doing, or you will get in trouble and be asking questions on here forever...and trust me, you will get some completely wrong answers, every time.

Awesome, there should be an FAQ about this.

*rage'nrat638* · 01-15-2007, 11:05 PM

agreed 100% frank

01-15-2007, 10:19 PM	#1
1BadSS NOT REALLY BANNED! Join Date: Jul 2004 Location: Shawnee, KS Posts: 1,072	I'm confused... brake issues I've read that on some trucks the studs on the firewall are spaced differently, 3 3/4" and 4" of spacing, but I keep getting told a delco unit is 4" spacing on the firewall brackets while a bendix unit is 3 3/4" spacing on the bolt pattern. Also keep getting told I can use a whole delco setup?! How does this work if the bolt pattern is different? __________________ 1987 Mustang Coupe - 2.7 Stroker, 78mm turbo, Stainless header, 3" Exh, FMIC, 160lb/hr Injectors, MS3, twin walbro 255's, 34psi. Eating V8's daily. 04 Pontiac GTO 04 Ford Mustang GT 68 C20 LWB stripper truck 73 K5 Cheyenne 76 C20 Sierra Crew SRW 88 K20 Suburban I'm not hammering on metal just to hammer, i'm creating a piece of art.

01-15-2007, 10:33 PM	#2
PICKMUP "Trucks with Class" Join Date: Jul 2000 Location: OLYMPIA, WA, USA Posts: 8,159	Re: I'm confused... brake issues The bolt spacing, on the firewall side of the brackets is the same on all of our trucks. It is the spacing of the bolts from the booster to the outside of the brackets that is slightly different. Get a complete, correct system, off a truck that came with the same type brakes you want to run...i.e. 1/2T DB. Don't mix-n-match, unless you really know what you are doing, or you will get in trouble and be asking questions on here forever...and trust me, you will get some completely wrong answers, every time.

01-15-2007, 11:05 PM	#4
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	Re: I'm confused... brake issues agreed 100% frank

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