Originally Posted by Bill Dearborn

A number of people have done this over the years. From 01-04 you don't need to worry about the bias spring since the cars don't have one. Proportioning in those years was done by the EBCM. Most people used the C5 front rotor as it didn't take any special brackets to hook everything up although you will lose the parking brake doing this. I don't know how the C5/C6 base front rotor compares in size (thickness and diameter) to the C6 Z51 rear rotor but if you don't mind losing the parking brake which is pretty much useless anyways use the C5 front rotor.

Bill

Originally Posted by c5mtl

What happens if the car is a 99

Originally Posted by Blitzkrieg

I don't know why it wouldn't work on 00 or older models?

I have front caliper, brackets, and rotors in the rear of my 2001 and they work really well, You lose your E brake but I have an Auto and never used it anyways. Cheap mod that works great, I can hold my 700hp monster with 3200 stall to 2700-2800 at the track, before i was able to hold it to 1800 max!

Originally Posted by c5mtl

Spoke to DRM today( very helpful ) he told me not to worry and just do it....if the car starts to nose drive on hard stops he recommends I change the bias spring

Originally Posted by Tyler_RN_EMT

The bias spring was my concern. I understand that my 98 has a bias spring where as newer c5s do not, they rely on computer control. So what your saying is this mod is ok to do even with stock bias springs on older c5s like mine??



Tyler

Originally Posted by _zebra

i'm pretty sure GM spent a bunch more cash determining 346ci was the ideal displacement for the LS1, yet you felt 383ci better-suited your needs. and a 4L60 was just fine as it was

Originally Posted by c5mtl

What I don't understand is why would drm warn me to look out for excessive nose drive under hard braking.....would installing bigger rears prevent that??

Originally Posted by TriplBlk

Eh, suspension is the most helpful for nose dive

Originally Posted by 1sickz51vette

Can you run the C6 Z51 rotors in the rear with the stock c5 calipers?

Originally Posted by alxltd1

Parts used:

C5 front Calipers - no mods
NAPA Part # 83212A Disc Brake Hardware Kit
GM Caliper rebuild kit
C5 front brackets - modified for clearance.
C6 Z51 rear rotors - no mods
NAPA Part#38253 Brake hoses - 18 1/2" in length verus 16" stock
, OEM should work, but I didn't like the stress put the lines at the frame mount point. Plus, I wanted to replace hardware with new anyway being this car is a 1998 with 80,000+ miles on it.

My wheels are OEM C6Z06 off a 2008 Z06
front: 18 inch x 9.5 inch P275/35ZR18
rear: 19 inch x 12 inch P325/30ZR19

Performance? Braking appears somewhat better, but I didn't do the mod for performance per say, as I don't track or race the car so I would let those that do make the statements about that aspect of the conversion. Logic would say it should be better. I am not getting any errors on the DIC. I have probably put 10 - 15 miles on the car since Thursday night. I will be going on a run this sunday with others in the club and that will put about a 100 or so miles on the car.

Originally Posted by c5mtl

Well said ...but I don't think my 383 is going to cause a rear end lockup under an emergency stop causing a spinout....