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Old 01-30-2015, 09:52 PM   #1
Back row pupil
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1/2 ton to 3/4 ton running gear

I need advice on choosing the right year of 3 / 4 ton running gear, to put under my '72 short box. I want an easy transition. Plus I am looking to disc brake the rear! Looking to run the new 37's or old school 38's.
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Old 01-30-2015, 10:34 PM   #2
Back row pupil
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1/2 ton to 3/4 ton running gear

I need advice on choosing the right year of 3 / 4 ton running gear, for my '72 short box. I want a relatively easy transition. Plus I am looking to disc brake the rear. I am wanting to run the new 37's or old school 38's.
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Old 01-30-2015, 10:45 PM   #3
GASoline71
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Re: 1/2 ton to 3/4 ton running gear

This a 4x4?

Put a Corporate 14 bolt FF under it. Bomb proof.

Gary
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My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

The Rebuild of Creeping Death after the wreck

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I would never rebuild a 305.
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I love using vacuum gauges as part of the carb tuning process. I hook the gauge to the inside of my garbage can and leave it there.
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Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
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Its cheaper to listen to advice given when you ask for help than it is to ignore everyone and wait for carnage.
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Old 01-30-2015, 10:45 PM   #4
GASoline71
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Re: 1/2 ton to 3/4 ton running gear

No need to post this in multiple areas...

Gary
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'cuz chicks dig scars...

My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

The Rebuild of Creeping Death after the wreck

Quote:
Originally Posted by LONGHAIR View Post
I would never rebuild a 305.
Quote:
Originally Posted by prostreetC-10 View Post
I love using vacuum gauges as part of the carb tuning process. I hook the gauge to the inside of my garbage can and leave it there.
Quote:
Originally Posted by Marv D View Post
Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
Quote:
Originally Posted by cableguy0 View Post
Its cheaper to listen to advice given when you ask for help than it is to ignore everyone and wait for carnage.
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Old 01-30-2015, 10:53 PM   #5
Back row pupil
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Re: 1/2 ton to 3/4 ton running gear

Does the year matter? Rumor has it that the '79 is best because of larger bearings?! How about disc'ing the rear, relatively inexpensive?
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Old 01-31-2015, 12:14 AM   #6
special-K
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Re: 1/2 ton to 3/4 ton running gear

Hi, welcome to the site. I answered in your other thread.
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Old 01-31-2015, 12:51 AM   #7
Captainfab
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Re: 1/2 ton to 3/4 ton running gear

You can get rear disc caliper brackets from either http://www.Ruffstuffspecialties.com or http://www.Diy4x.com. Reasonably priced and quite simple to do.

Quote:
Originally Posted by Back row pupil View Post
Does the year matter? Rumor has it that the '79 is best because of larger bearings?! How about disc'ing the rear, relatively inexpensive?
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Old 01-31-2015, 11:51 AM   #8
whitedog76
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Re: 1/2 ton to 3/4 ton running gear

You can also retrofit an older axle to discs w/parking brakes using factory parts.

http://s1074.photobucket.com/user/wh...90510598618083

Look into 2000 and newer trucks and 2003 and newer vans.
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Old 01-31-2015, 03:45 PM   #9
Back row pupil
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Re: 1/2 ton to 3/4 ton running gear

Wow! Thanks for the advice!
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