differences in rear spring
Thread Starter
Burning Brakes
Joined: Oct 2003
Posts: 959
Likes: 12
From: California CA
differences in rear spring
I would like to know what are the differences between the rear springs on the auto and manual transmission 2001-2004 vettes.
The reason I ask is that someone gave me a Z51 rear spring off an automatic car (part No. 22146646) and I want to know if it fits on my M6 2001 vette.
The reason I ask is that someone gave me a Z51 rear spring off an automatic car (part No. 22146646) and I want to know if it fits on my M6 2001 vette.
Melting Slicks
Joined: Oct 2003
Posts: 2,834
Likes: 91
From: California
Re: differences in rear spring (Dan_the_C5_Man)
Not sure what the differences are, but there are differences.
The part number he listed is in fact listed as for an Automatic, the part number for a Manual trans is 22179020.
??
The part number he listed is in fact listed as for an Automatic, the part number for a Manual trans is 22179020.
??
Thread Starter
Burning Brakes
Joined: Oct 2003
Posts: 959
Likes: 12
From: California CA
Re: differences in rear spring (Dan_the_C5_Man)
It seems from LS1howto.com that there is no difference... just wanted to know for sure before I pulled the springs off and checked the old fashioned way.
Burning Brakes
Joined: Oct 2001
Posts: 919
Likes: 1
From: Portland area OR
Re: differences in rear spring (sprinter)
The FE-1 springs are rated @439.66lb. front, @576.70lb. rear manual tranny, @588.12lb. rear auto tranny. The FE-3 springs are @525.31lb. front, @633.80lb. manual tranny, and @645.22lb. auto tranny. I installed used Z51 manual transmission springs on my AT vert.
Thread Starter
Burning Brakes
Joined: Oct 2003
Posts: 959
Likes: 12
From: California CA
Re: differences in rear spring (powderski13)
"The FE-1 springs are rated @439.66lb. front, @576.70lb. rear manual tranny, @588.12lb. rear auto tranny. The FE-3 springs are @525.31lb. front, @633.80lb. manual tranny, and @645.22lb. auto tranny. I installed used Z51 manual transmission springs on my AT vert."
Does this mean that there are not any physical size differences and I will be able to install the A4 rear spring with no fitment issues?
You say the A4 rear spring can hold a higher load, does this mean that the A4 spring is stiffer than the M6 spring? ...and therefore would be the preferred rear Z51 spring.
Does this mean that there are not any physical size differences and I will be able to install the A4 rear spring with no fitment issues?
You say the A4 rear spring can hold a higher load, does this mean that the A4 spring is stiffer than the M6 spring? ...and therefore would be the preferred rear Z51 spring.
Melting Slicks
Joined: Oct 2003
Posts: 2,834
Likes: 91
From: California
Re: differences in rear spring (sprinter)
You say the A4 rear spring can hold a higher load, does this mean that the A4 spring is stiffer than the M6 spring? ...and therefore would be the preferred rear Z51 spring.
Saying that, I doubt the small difference will make much of a difference, other than probably riding a bit harsher than a factory Z51.
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Le Mans Master
Joined: Dec 2003
Posts: 5,561
Likes: 448
From: Atlanta metro Ga.
Re: differences in rear spring (powderski13)
The FE-1 springs are rated @439.66lb. front, @576.70lb. rear manual tranny, @588.12lb. rear auto tranny. The FE-3 springs are @525.31lb. front, @633.80lb. manual tranny, and @645.22lb. auto tranny. I installed used Z51 manual transmission springs on my AT vert.
Thread Starter
Burning Brakes
Joined: Oct 2003
Posts: 959
Likes: 12
From: California CA
Re: differences in rear spring (Dan_the_C5_Man)
I will buy the Z06 sway bar kit to complete the upgrade. I was very lucky to get my grubby little hands on these "factory sample" sway bars (a Z06 front and the Z51 A4 rear) ...for free mind you! :yesnod:
I still have to get the engine back together first... installing ported/valves/springs LS6 heads, CC224 cam and Kooks headers.
I still have to get the engine back together first... installing ported/valves/springs LS6 heads, CC224 cam and Kooks headers.
