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Old 01-30-2012, 12:17 PM   #1
killerb68
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Disc brakes on my 66 GMC

I picked up a 66 GMC recently and it already had a power disc brake conversion done on it. I now would like to order dropped spindles for it but have no idea what conversion was done....71 spindles....73 or newer spindles...etc so before i ordered my new spindles what should I check to see what year of brakes it has on it?.....New to this Chevy/GMC truck thing...lol
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Old 01-30-2012, 01:30 PM   #2
hopped up
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Re: Disc brakes on my 66 GMC

some pix of your brakes and spindles would def help.
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Old 02-04-2012, 03:04 PM   #3
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Re: Disc brakes on my 66 GMC

my brakes
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Old 02-04-2012, 06:42 PM   #4
SCOTI
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Re: Disc brakes on my 66 GMC

Can you get a pic from farther back specifically of the a-arm bushings? The tab circled makes me think its a 71-72 set-up as that's how the lines were connected @ the front x-member.....
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67SWB-B.B.RetroRod
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Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive.
It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.....

Cubic inches is like Indiana Jones with a cheap pistol.
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Old 02-04-2012, 08:10 PM   #5
lolife99
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Re: Disc brakes on my 66 GMC

Quote:
Originally Posted by SCOTI View Post
Can you get a pic from farther back specifically of the a-arm bushings? The tab circled makes me think its a 71-72 set-up as that's how the lines were connected @ the front x-member.....
SCOTI,... isn't that behind the crossmember?
Like the 67-70 trucks had?
71-72's were on the front side.
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Convert to disc brakes.
http://67-72chevytrucks.com/vboard/s...d.php?t=444823
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Old 02-04-2012, 08:55 PM   #6
SCOTI
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Re: Disc brakes on my 66 GMC

Quote:
Originally Posted by lolife99 View Post
SCOTI,... isn't that behind the crossmember?
Like the 67-70 trucks had?
71-72's were on the front side.
This is correct.
__________________
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Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive.
It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.....

Cubic inches is like Indiana Jones with a cheap pistol.
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Old 02-04-2012, 09:12 PM   #7
killerb68
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Re: Disc brakes on my 66 GMC

So....should i just get the spindles for the 71 brakes?
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Old 02-04-2012, 09:27 PM   #8
lolife99
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Re: Disc brakes on my 66 GMC

You are going to have to figure out which balljoints and outer tie rods you have now.
That's the only way to know what spindle is currently on the truck.

I assume the rotors are 1-1/4" wide and not 1" wide?
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Convert to disc brakes.
http://67-72chevytrucks.com/vboard/s...d.php?t=444823
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