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Mod | | | Forums66 Topics128,187 Posts1,057,214 Members48,465 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Mar 2015 Posts: 24 New Guy | | New Guy Joined: Mar 2015 Posts: 24 | Hey guys just wondering if the front axle from a 58 chevy half ton will work on my 1956 gmc 3/4 ton….looks to be the same but what do I know?…..the 58 axle already has disc brake conversion and has been completely rebuilt and I can get it for a song…thanks | | | | | Joined: Jul 2010 Posts: 592 Shop Shark | | Shop Shark Joined: Jul 2010 Posts: 592 | Should be a straight swap, but you'll be going from eight lug rims to six lugs.
Matt | | | | | Joined: Mar 2015 Posts: 24 New Guy | | New Guy Joined: Mar 2015 Posts: 24 | Thanks Maybellene,the 8 lug rims I had are split rims so I had already planned on replacing them with 6 lug…..thanks | | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | I'm not familiar with the 58, but on the AD trucks this is a bolt in swap, the front springs are same width for 1/2 and 3/4 ton, so axle bolts in the same.
I wouldn't downgrade a 3/4 ton though. Lots of 8 lug tubeless wheels are available. There are also a couple disc brake kits available for 3/4 and 1 tons the last couple years, if disc brakes were the main goal.
I wonder if the aftermarket 1/2 ton disc brakes are even as good as the3/4 ton drums? Brakes come in different sizes, so just being disc brakes doesn't make them more effective, depending on the compression.
Grigg | | | | | Joined: Feb 2004 Posts: 29,876 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,876 | Is the "truck" going to become a" Cowboy Cadillac" or a weekend cruiser that never gets the bed dirty, let alone loaded to its capacity? If so, a couple of holes in the floorboard and a Fred Flintstone brake system will probably be sufficient. If it's going to do real truck stuff, even occasionally, going to a compact car brake and/or suspension system is irresponsible and dangerous.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Mar 2015 Posts: 24 New Guy | | New Guy Joined: Mar 2015 Posts: 24 | This truck will be a weekend cruiser,installing a 190 hp 350 s/b,never going to be doing any heavy duty hauling. I picked up the axle this weekend...all bushings, bearings every thing had been replaced.and the disc conversion had been done, the owner changed direction and went for IFS ....for what I have into it (very little) I thought it was worth the gamble...if it doesn't work out I can always swap it onto my 1/2 ton....thanks for the input guys..
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