C6 rear diff and suspension install

[mrr23]

Trying to find some information out before tackling this.

C6 production 08/04
Entire rear suspension with 3.42 diff

I know about the weak case issue
I know the transmission were the same for 05 and c5, so the diff will bolt directly to the transmission.

Biggest question is about the wheelbase added length of 1.2" for the 2005 year did it move the diff back as well?

 

[mrr23]

found these offset mounts for 550.00 from rkt performance. way too much money for that. looking to fab some up with a friend of mine.

 

[Rich Z]

Is this something you are doing to your C5?

 

[mrr23]

yes.

found out lgmotorsports makes solid mount. so i'll be making some out of square tube steel and weld bolts to it. i can put a 1/4" rubber mat material i have to reduce vibration.

 

[Rich Z]

Just curious about why you are doing this. What benefits does the C6 differential and rear suspension have over the C5?

For instance, when I was looking at replacing my half shafts on my C5Z, all opinions I read indicated that the C5 shafts were stronger than the ones in the C6. That doesn't mean it was correct, however.

 

[mrr23]

the 3.15 diff i put in my car whines. i knew it when i got it for 100.00. this entire rear suspension with 3.42 diff i got for 200.00. so beats trying to find a 3.42 c5 diff that go for about 500.00-650.00. so, that's my reason.

going to be making solid mounts out of 3" square tubing maybe this weekend.

on another note, the c6 wheelbase is 1.2" longer than the c5. plus it has more suspension travel. GM did this for better ride and handling. so, i'll get that as well.

 

[Rich Z]

Sounds like an interesting project. Let me know how it goes. :thumbsup:

 

[mrr23]

There will be pictures

 

[mrr23]

lucky me, the spring is from a 2012 z06 782# spring rate. it'll match my c6 z06 swaybars

 

[mrr23]

I'm bored so I cut the factory diff mount open. Liquid filled with a baffling system

 

[85vette]

If it's as good as my hydraulic motor mounts were it's junk.

 

[Rich Z]

Yeah, I've heard stories of the stock motor mounts leaking fluid after a while.

 

[mrr23]

took some pictures of the c5 and 2005 c6 diff for comparison

 

[mrr23]

bottom

 

[Rich Z]

Yeah, they do look quite a bit different. Which rear cradle do you need to use to put that into your C5?

 

[mrr23]

Due to the mount change, I am using the c6 cradle. I am using the entire rear suspension. The spring is from a 2012 z06.

 

[mrr23]

after getting some plans for making the offset mounts from a guy on corvetteforum, i planned out mine using 2x3 steel. will make them tomorrow.

 

[mrr23]

Rear outer tie rod dust boot

 

[Rich Z]

Rear outer tie rod dust boot

Man, I sure feel dumb, because it looks to me like I am looking at an empty container...... :shrug01:

 

[Rich Z]

after getting some plans for making the offset mounts from a guy on corvetteforum, i planned out mine using 2x3 steel. will make them tomorrow.

Do you have access to a milling machine?