C4 Bushings
Thread Starter
Intermediate
Joined: Apr 2018
Posts: 30
Likes: 0
C4 Bushings
Hello!
I've already the stock bushings in my 1992 Vette.
Now it's time to change it.
I've installed a KW Automotive Coilover suspension kit (instead normal shocks with Leaf spring).
There are different types of polyurethan bushings kits for the C4. I find black and red one from Prothane and Energysuspension. Both manufactures means the hardness of both color types are the same. Don't know what they are using for - street or race?
Powerflex built different hardness with color code: yellow for street, purple for performance and black for race. But they don't produce bushings for the Corvette.
Do you know other manufactures. I'm looking for a street version. What woul be your experience?
The KW coilover is very strong/hard for street driving and i don't want to get the car more harder than yet.
Thanks for your opinion.
Best regards!
Juergen
I've already the stock bushings in my 1992 Vette.
Now it's time to change it.
I've installed a KW Automotive Coilover suspension kit (instead normal shocks with Leaf spring).
There are different types of polyurethan bushings kits for the C4. I find black and red one from Prothane and Energysuspension. Both manufactures means the hardness of both color types are the same. Don't know what they are using for - street or race?
Powerflex built different hardness with color code: yellow for street, purple for performance and black for race. But they don't produce bushings for the Corvette.
Do you know other manufactures. I'm looking for a street version. What woul be your experience?
The KW coilover is very strong/hard for street driving and i don't want to get the car more harder than yet.
Thanks for your opinion.
Best regards!
Juergen
Last edited by juergenc478; Oct 7, 2018 at 02:28 PM.
Le Mans Master
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
Both high energy and prothane sell street/ track urethane bushings, the color has no meaning. Red is noticeable or "showy", black doesn't stand out snd may pass for stock at a glance.
i have prothane they do add to a rougher ride and noise on irregular surfaces.
i have prothane they do add to a rougher ride and noise on irregular surfaces.
Last edited by Kevova; Oct 7, 2018 at 08:41 PM.
Safety Car
Joined: Apr 2016
Posts: 4,648
Likes: 1,059
From: N.E. Ohio OH
Finalist 2020 C4 of the Year - Modified
There is a new offering that just came out this year. They are a bit more pricey than the urethane bushings. The company that makes them is out of Australia and supplies bushings for lots of autos. The companies name is SuperPro. I found it best to look at the Australian (home company site).
https://superpro.com.au/
https://corvettesalvage.com/product/...kit-1984-1996/
https://corvettesalvage.com/product/...set-1984-1996/
Summit Racing is carrying them, not for C4 Corvettes though. At this time there are only 2 businesses in the US that have them. I found them doing some searches one evening. (the original company and then found out that another place I deal with is associated with the 1st and is carrying them for the same price and shipping, ie: free).
Super Pro states that their warranty is:
I will be putting a set of these in the batwing of the Dana 44 I am rebuilding for installation into my 96 A4 LT1 car.
Watch how easy they install in the dogbones
https://superpro.com.au/
https://corvettesalvage.com/product/...kit-1984-1996/
https://corvettesalvage.com/product/...set-1984-1996/
Summit Racing is carrying them, not for C4 Corvettes though. At this time there are only 2 businesses in the US that have them. I found them doing some searches one evening. (the original company and then found out that another place I deal with is associated with the 1st and is carrying them for the same price and shipping, ie: free).
Super Pro states that their warranty is:
These bushings carry a lifetime guarantee from SuperPro, the largest performance bushing manufacturer in the world
Watch how easy they install in the dogbones
Safety Car
Joined: Nov 2009
Posts: 3,973
Likes: 341
From: Adelaide South Australia
Hello!
I've already the stock bushings in my 1992 Vette.
Now it's time to change it.
I've installed a KW Automotive Coilover suspension kit (instead normal shocks with Leaf spring).
There are different types of polyurethan bushings kits for the C4. I find black and red one from Prothane and Energysuspension. Both manufactures means the hardness of both color types are the same. Don't know what they are using for - street or race?
Powerflex built different hardness with color code: yellow for street, purple for performance and black for race. But they don't produce bushings for the Corvette.
Do you know other manufactures. I'm looking for a street version. What woul be your experience?
The KW coilover is very strong/hard for street driving and i don't want to get the car more harder than yet.
Thanks for your opinion.
Best regards!
Juergen
I've already the stock bushings in my 1992 Vette.
Now it's time to change it.
I've installed a KW Automotive Coilover suspension kit (instead normal shocks with Leaf spring).
There are different types of polyurethan bushings kits for the C4. I find black and red one from Prothane and Energysuspension. Both manufactures means the hardness of both color types are the same. Don't know what they are using for - street or race?
Powerflex built different hardness with color code: yellow for street, purple for performance and black for race. But they don't produce bushings for the Corvette.
Do you know other manufactures. I'm looking for a street version. What woul be your experience?
The KW coilover is very strong/hard for street driving and i don't want to get the car more harder than yet.
Thanks for your opinion.
Best regards!
Juergen
Polyurethane is fine for street use, certainly much better than 20 or 30 year old rubber !
Ive got Poly, rubber, rod ends, and duralum in my suspension and dont have any issues with excessive harshness from any of them, but I guess thats a personal thing.
