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GMT 800 Brake Conversion > Silverado HD 2500

Big T

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Did you ever figure out why the knuckles don't rub on your 1999, but do on the 1994?
I would say they don’t rub, it’s just that the stops on the forged LCA allow more steering travel.

Haven’t installed the forged LCAs yet. Hope to get to that this year. Still a lot on my plate and still recovering from foot surgery.
 

ryeguy2006a

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Ok thanks for the clarification. And I thought I read somewhere that the later model OBS 2500 trucks all came with the forged lowers stock?

Thanks for this thread, so much great information here. I can't wait to do this swap ok my truck!
 

ryeguy2006a

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BigT, another question, did you have to use the GMT800 axles or can you re-use the stock GMT400 axles? I've seen a few other people mention that you have to swap to the later model axles for a smaller diameter or something?
 

THEFERMANATOR

FRANKENBURBAN
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There's a company out there making an adapter to bolt the new style disc brakes on in place of the older drums. Otherwise you need to weld on a new bracket to attach the disc brake bracket or swap axles and reweld the mounting brackets.
 

ryeguy2006a

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Thanks for the quick reply Ferm. I should have specified though, I'm asking about the front brakes. I saw that company out there for the conversion brackets for the rear drums, but I'm pretty happy with my stock drums at the moment.
 

Big T

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BigT, another question, did you have to use the GMT800 axles or can you re-use the stock GMT400 axles? I've seen a few other people mention that you have to swap to the later model axles for a smaller diameter or something?
Re-use the existing front GMT400 axles. They are an exact fit.
 
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