ultraviolet70

Thought this might be better place to ask this. Has anyone tried this spring, if so what'd you think?
http://www.vbandp.com/detail.aspx?ID=727

STEVEN13

I would like to hear if anyone tried this spring also. This spring is similar to a C5 set-up. My only concern is that the spring rate is high (I think 800-1000 lbs). Maybe because its a straight design-the high rate can work.



Steven

John Shiels

My C5 is 1200 / 900

astock165

Although I have not tried the VBP spring I agree with your concern that the rate is too stiff.

Gary @ Hardbar and I have been working to develop a kit that will allow C4 owners to retrofit their existing springs to be independantly adjustable on both sides, like the C5/C6 springs.

Our initial test went very well and was done with a FE1 base suspension spring. I also have a Z51 front spring that I will be doing this to and hopefully testing in early April (damn snow here in the NE!).

This kit would allow you to make any C4 spring adjustable for a mere fraction of the price. Also, we believe the adjustment bolt from this kit can be brought forward to the C5s & C6s and be superior to the stock design.

We will keep you posted (sorry for the hijack).

RAFTRACER

The C4 extreme flat spring will gain you adjustability which is great. Ability to corner wieght, and flexible ride hieghts are just some of the benefits.

STEVEN13

I know its not my thread...but thanks (to all) for the quick responses!!!

astock165-keep us posted on your results!! Here in NY (Long Island) no snow at all.

Steven

racerwannabe

i have one of these springs,i used it on my 96 ... was much better ,but was outlawed by the nccc in the class i was running..i used the adjusters on another project ...i'll sell it cheap and you can get the adjusters fron VBP..
Johnny

KCHOTBOAT

I have the spring and it worked great for me on autox.

BrianCunningham

I looked into it, but I decided to just go fully adjustable with a coil over setup.

ultraviolet70

Thanks for the responses, all hijacks welcome astock165 keeps us posted I'm curious to hear your results aswell.

VBP

I saw the post and the spring you referenced is our C-4 Extreme Front Spring. This spring does have adjustors that NCCC does not allow (and I still do not understand why) and a high spring rate with a flat style arch. We had a group of autocrossers that asked for more and we worked with them and have come out with some new spring designs.

Before we only had the replacement spring (similar to stock) with a rate range of 300 to 340#/inch, the Sport Spring with a small arch style and a rate range of 450-550#/inch and our Extreme which is a flat design (no arch) and a rate range of 1000-1250#/inch. What we did was add two more to the line which are our new Sport Plus and Sport Plus Adjustable.

The Sport Plus has a spring rate range of 650 to 750#/inch. This is suitable for the track and also can be used for the street too which is why it is popular. Is has a little bit of an arch to it, but a higher rate than our original Sport. This can be used in stock classes or where the adjustors are not allowed. It gives more, but not as much as the Extreme and without the adjustors.

If adjustors are allowed, our Sport Plus Adjustable has the same adjustors as our Extreme and the spring has a little bit of an arch (it is not flat like the Extreme) and the rate range is 575-900#/inch, a little softer than the Extreme at 1000-1250#/inch and can still be street driven.

Depending on what shocks you add in the mix, will depend on how much flexibility you will have between track and street performance.

Some of my customers are adding some adjustable shocks to these new springs to dual purpose the Vette with much success.

If you would like to discuss our springs, please email me directly at pattie@vbandp.com or call me toll free at 1-800-237-9991.

All of our springs, along with some other items, are on sale during the month of February too. It is the month to show your Vette some love

Best Regards,
Pattie
VBP

69autoXr

Nobody understands why...

STEVEN13

Thanks Pattie...when I called several months back-these options that you mentioned were not availble. Good to know!

Steven

Carolina C4 Racer

I understand why......
Because the rulebook states in reference to springs... "correct configuration for year"
Adjustable springs were never available on any C4, therefore adjustable springs are not allowed in Group I, II, or III Mod.

astock165

Thank you for the interest. Gary and I got some good news just last night that we might be able to test our product sooner than planned. We're excited about the project and will keep you all posted!

RAFTRACER

Doesn't matter about the NCCC rule.........Can still use the same rate spring with no ride hieght adjusters, and still have ride hieght adjustment.....

The thing that created that rule is called a "witch-hunt", I understand from my sources....

racerwannabe

i wasn't made aware of the rule till after i had installed the spring,was a "clarification " i think it was called..
Johnny

69autoXr

Thanks, now I understand.

AUTO_X_AL

:
I've yet to find someone who agrees with that rule. The VBP spring just makes it easier to adjust.

Shrek

Hey "witch" how much for the spring?
I'll bet it would feel right at home in Georgana's "Carolina group II" car.