4 Piston Big Brake Upgrade from 2019-20

[Dantheman1540]

Dan , PLUS these vehicles could use a bit more bias on the rear brakes. I could never get used to the nose dive these vehicles take due to the lack of rear brake bias.

Maybe I'm used to it or my suspension minimizes the nose dive but I don't think it's too bad. probably terrible compared to a car but my Tacoma always seems looser than my tahoe.

 

[mattbta]

I swear I remember people talking about converting to the GMT-800 2 piston rear calipers years ago but couldn’t find anything on it when I looked last night before I ordered the red Power Stop calipers to match my Brembos. All that came up was converting the 800 to the 900 front brakes. There’s different rear calipers on the the 800 depending on 2WD or 4WD and I’m not sure if the parking brake is the same where the 800 rear rotor would just drop on so I wouldn’t want to blindly order parts. The bracket bolt spacing could be different, too.

All that I've read says due to bigger rotors, 800 rears were better than 900.

Also -- different size rotors for 800 based on brake options. JL4 has larger (304mm vs 330mm)

 

[fasteddy]

Really curious if the caliper will clear this wheel on my Tahoe -- it's from an '18 Silverado. Noticed it has 28mm offset...or at least that's the number on the backside.View attachment 277208

The guy in the video from the first page got his 2018 18" silverado wheels to fit with a 1/4 inch spacer.
Its was this wheel....2018 Z71?

 

[1BADI5]

I'm looking at the rear dual piston caliper mod next.

Calipers from the 2006 Suburban are dual piston with 330mm/12.99" vented rotors.

I might run up to Autozone this weekend and get some parts to test fit......if they don't work, I'll return them.

 

[fasteddy]

I'm looking at the rear dual piston caliper mod next.

Calipers from the 2006 Suburban are dual piston with 330mm/12.99" vented rotors.

I might run up to Autozone this weekend and get some parts to test fit......if they don't work, I'll return them.

Do you know what the increase in pad area is over my 2003 tahoe? Its 4x4 so it has 2P calipers as well.

 

[mang213]

I seem to remember people swapping to the GMT-800 two piston rear calipers as an upgrade for the 900s.

I did this a year ago [emoji106] works fine, nothing major

Sent from my SM-G960U using Tapatalk

 

[mang213]

I just got the passenger side caliper and my Stoptech ss lines yesterday. Doubt I'll have everything by this weekend but I should be able to mock up what I have and see if my 2010 Z71 18's will clear. Pics to come

Sent from my SM-G960U using Tapatalk

 

[the_tool_man]

Dan , PLUS these vehicles could use a bit more bias on the rear brakes. I could never get used to the nose dive these vehicles take due to the lack of rear brake bias.

I'm curious. How does brake bias affect brake dive? I always thought brake dive was just a function of weight transfer vs. suspension stiffness.

 

[FrankU]

I'm curious. How does brake bias affect brake dive? I always thought brake dive was just a function of weight transfer vs. suspension stiffness.

Bias means that it favors , in this case the front brakes. It feels like the front bias knocks the Tahoe off balance. Whereas I prefer more rear bias to help control the vehicle better. The rear disc brakes on these vehicles is a joke , to me anyways.

The 2006 SSV I had had very good brakes. It had bigger brakes all around and had hydro-boost assist.

 

[treehan77]

You don’t have hydroboost? I’d be upgrading to that before these big brakes…