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Discussion Starter #1
I would like to switch my drum brakes to disc in the rear of a 99 K1500.

What does it involve? Are there issues or things I should be aware of? (And, yes, I do realize it might be a lot easier to just trade up to a 2000 or newer but I'd like to consider this conversion first because I really like my present Burb).

Thanks for any information,
John
 

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I thought LMC had a disc brake conversion specifically for the 90s bodystyle truck, but I guess I'm wrong because I couldn't find it. However, here's the kit from LMC for the 80s bodystyle, which should get you started on your conversion. Both bodystyles used the same 10-bolt rear axle for half-ton trucks. http://www.lmctruck.com/icatalog/csb/full.aspx?Page=148 Probably the reason it's not listed for the 90s bodystyle is because of the ABS system that's present, and the fact that the proportioning valve is part of the ABS system.
 

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SSBC makes a brake conversion. I already have the dual piston calipers in the front of my '98 k1500. It helped a little as I only kind of feel like I'm going to plow into the next car while going down a hill with a heavy load. Along with the rear disc conversion is a better brake master cylinder. And I will probably see a bigger improvement.
for 10" drums
http://www.ssbrakes.com/commerce/detail/index.cfm?nPID=8385
for 11" drums
http://www.ssbrakes.com/commerce/detail/index.cfm?nPID=8396

There also seems to be more options for brakes listed for '99 than '98. I haven't figured out if there is an actualy difference, or if they are somehow looping 1999 half year burbs along with a model change to GMT800 series rigs in there. Because I haven't found any literature that indicates brakes as a change from '98 to '99 model gmt400 Burbs.

As far as brake options go, the GMT800 series Burbs have a LOT more options as far as big brake kits, especially 4wd. I believe Wilwood makes brakes for our series but the prices will take your breath away.

Here's a review article to get an idea of what the improvement is (and it is significant) on a '99 Tahoe.

http://www.fourwheeler.com/techarticles/suspension/129_0605_chevy_tahoe_ssbc_disc_brake_conversion/index.html
 

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Discussion Starter #5
Thanks for all the help. Seems like for all the expense and work, there is little to gain.

John
 

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If you had a 3/4 or 1-ton truck, it would be a piece of cake. The 14-bolt axles have many inexpensive kits to convert to rear discs available. The 10-bolt, especially with ABS....not so much.
 

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Thanks for all the help. Seems like for all the expense and work, there is little to gain.

John
I just have the front dual caliper conversion, but an extra 20 or so stopping feet gained is a pretty big improvement. The real question is how committed you are to your current rig? If you think you are going to stay with it for awhile I think it is worth the investment. It may be better to upgrade to a next gen, but finding a low mileage one is tough from my experience.
 
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