C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Composite leaf, shocks upgrade?

Thread Tools
 
Search this Thread
 
Old 07-16-2018, 08:06 PM
  #1  
Mitty
Instructor
Thread Starter
 
Mitty's Avatar
 
Member Since: Jun 2018
Posts: 107
Received 26 Likes on 8 Posts
Default Composite leaf, shocks upgrade?

Hi, I’m looking at maybe upgrading the rear leaf on my 74 to a carbon 330lb mono spring, I’ve heard that the shocks can make for a twitchy ride if they’re not upgraded? I have recently new kyb-343218/127 front/back, would these cope?
Also, would my money be better spent on new larger wheels and decent tyres, getting rid of the 15” radial TA’s?

Cheers, Tim.
Old 07-16-2018, 08:31 PM
  #2  
SI67
Melting Slicks
 
SI67's Avatar
 
Member Since: Apr 2006
Location: Sunnyvale CA
Posts: 2,324
Received 60 Likes on 52 Posts

Default

If you have stock standard springs up front, that 330#/inch spring will make the rear a lot stiffer. You might get some unbalanced and undesirable handling (oversteer?) that way unless you also put stiffer coils up front.
Old 07-16-2018, 08:46 PM
  #3  
Mitty
Instructor
Thread Starter
 
Mitty's Avatar
 
Member Since: Jun 2018
Posts: 107
Received 26 Likes on 8 Posts
Default

Right, so a front coil upgrade would be more worthwhile than shocks?
Old 07-17-2018, 04:01 AM
  #4  
terrys6t8roadster
Melting Slicks
 
terrys6t8roadster's Avatar
 
Member Since: May 2012
Location: Allenton Wisconsin
Posts: 2,191
Received 337 Likes on 280 Posts

Default

My 69 got a 330# rear composite spring, when I got the car it had new Monroe gasmatic shocks all around. It rides great. When purchasing the spring I went with the shorter spring for the 18x10 rear wheels. Front is all stock. T
Old 07-17-2018, 07:03 AM
  #5  
Mitty
Instructor
Thread Starter
 
Mitty's Avatar
 
Member Since: Jun 2018
Posts: 107
Received 26 Likes on 8 Posts
Default

So I guess it’ll be a case of suck it and see.
Is there much difference in the different makes of monosprings?
I see the vb&p mentiond a lot, but their website is suspended? Are they still going?
The zip products leaf is cheap at $369, but are they any good?
The vansteel is a little more at $439.

It’s a little awkward in the U.K., shipping fees, 20% vat on all prices, so want to get it right.

Thanks for your thoughts.
Old 07-17-2018, 08:30 AM
  #6  
terrys6t8roadster
Melting Slicks
 
terrys6t8roadster's Avatar
 
Member Since: May 2012
Location: Allenton Wisconsin
Posts: 2,191
Received 337 Likes on 280 Posts

Default

Check out Van Steel that is where I got my spring from, also get the longer bolt kit. Might be worthwhile to call them, great bunch of guys and good sound advice. I was going to go with a 300# spring but they convinced me that the 330# was the right one and they were right. T
Old 07-17-2018, 07:39 PM
  #7  
bobs77vet
Race Director
 
bobs77vet's Avatar
 
Member Since: Sep 2004
Location: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
Posts: 11,863
Received 255 Likes on 225 Posts

Default

15 inch radial TAs give a nice ride....lower profile 17" wheels may not give the ,ride you are looking for
Old 07-18-2018, 02:40 AM
  #8  
7T1vette
Team Owner
 
7T1vette's Avatar
 
Member Since: Jan 2006
Location: Crossville TN
Posts: 36,599
Received 2,713 Likes on 2,271 Posts

Default

Since you have new shocks, install the spring and see how it works. You'll know if the ride or handling is unacceptable to you. If shocks need to be changed, go to Bilstein "Sport" shocks in rear. Bilstein Heavy-Duty shocks are not firm enough with that spring, IMO---too bouncy when you ride over a pronounced bump.
Old 07-18-2018, 08:47 AM
  #9  
Mitty
Instructor
Thread Starter
 
Mitty's Avatar
 
Member Since: Jun 2018
Posts: 107
Received 26 Likes on 8 Posts
Default

Thanks for the info, it’s nice to see no one advising against the composite rear leaf, so long as it’s complimented with the correct shocks and front springs. I’ve read the bilstien are the shocks to go with.
Old 07-18-2018, 02:34 PM
  #10  
Primoz
Burning Brakes
 
Primoz's Avatar
 
Member Since: Jul 2012
Location: Slovenia, EU
Posts: 1,116
Received 263 Likes on 128 Posts
2017 C3 of Year Finalist

Default

I just purchased a complete EZ ride kit from Van Steel.
Very helpful bunch of guys there at Van Steel!
I also live in Europe and they wanted to get the things right so I went with the package.
Not cheap but worth it because they did all the testing and put together a suspension package that will fit together nicely.
Link to my kit:
http://www.vansteel.com/index.cfm?fu...p=3047&ID=3689
Old 07-18-2018, 02:42 PM
  #11  
Mitty
Instructor
Thread Starter
 
Mitty's Avatar
 
Member Since: Jun 2018
Posts: 107
Received 26 Likes on 8 Posts
Default

It sucks having to pay import vat. Puts that kit at about £1300, or $1700! Looks like a good setup though.
Old 07-18-2018, 04:52 PM
  #12  
OMF
Melting Slicks
 
OMF's Avatar
 
Member Since: Jul 2006
Location: Salmon Arm, BC
Posts: 2,026
Received 343 Likes on 250 Posts

Default

Look in the for sale ads on this site....last week there was a VB&P 330 lb spring for sale, it may still be there

Last edited by OMF; 07-18-2018 at 04:52 PM.
Old 07-23-2018, 05:23 PM
  #13  
LiveryStable
8th Gear
 
LiveryStable's Avatar
 
Member Since: Sep 2012
Location: Olathe Kansas
Posts: 8
Likes: 0
Received 0 Likes on 0 Posts
Default

Everyone refers to Bilstein Sport shocks but all I see are performance and performance plus lines....is there a difference?

Get notified of new replies

To Composite leaf, shocks upgrade?




Quick Reply: Composite leaf, shocks upgrade?



All times are GMT -4. The time now is 06:16 PM.