When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
That is one of the cheaper kits that I have ever seen. Personally I don't think that 450# springs a stiff enough and cause excessive front end dive when you jump on the brakes. But to each his own! I've been very happy with my QA-1 dual adjust kit
Aren’t the stock springs 400 lbs? 450 should be a nice upgrade on stiffness. I was looking at that kit too but went in another direction for drag racing.
I put Viking coilers on the front of my 73 convertible and used their double acting shocks on the rear with 9 leaf stock spring modified by Eaton Detroit. I put Global West tubar A Arms on the front when I installed the coil overs. I have nothing but praise for Viking, good quality and excellent technical assistance. The difference in the way my car handles now is amazing. It is like a totally different car. There was a local speed shop near me that offered a 10% discount on the Viking items. (Beefcake Racing) If you look at the history behind Viking, the principles came from QA-1. I have Ridetech coilovers, tubular A arms plus their 4 link on my 55 Chevrolet. It was a lot more than the Viking and Viking has separate adjustment on compression and rebound. As for the spring size, I went with what they recommended. My car is now 26 1/2" in the front and 27" in the rear. It used to be a challenge at high speeds and now stays flat and straight.
I put Viking coilers on the front of my 73 convertible and used their double acting shocks on the rear with 9 leaf stock spring modified by Eaton Detroit. I put Global West tubar A Arms on the front when I installed the coil overs. I have nothing but praise for Viking, good quality and excellent technical assistance. The difference in the way my car handles now is amazing. It is like a totally different car. There was a local speed shop near me that offered a 10% discount on the Viking items. (Beefcake Racing) If you look at the history behind Viking, the principles came from QA-1. I have Ridetech coilovers, tubular A arms plus their 4 link on my 55 Chevrolet. It was a lot more than the Viking and Viking has separate adjustment on compression and rebound. As for the spring size, I went with what they recommended. My car is now 26 1/2" in the front and 27" in the rear. It used to be a challenge at high speeds and now stays flat and straight.
the stance looks great thinking of buying the viking or qa1 which spring rate did you choose mine is a 350 sbc
Aren’t the stock springs 400 lbs? 450 should be a nice upgrade on stiffness. I was looking at that kit too but went in another direction for drag racing.
Stock early C3 SBC front springs were a 250# rate, BBC 284#, and F41 550#.
So do coil overs like this mount to the underside of the lower control arm like the original shocks? If so, all of the load is on those two fasteners.
Or do they shorten the entire shock assembly accordingly so they can mount to the top side of the lower control arm?
Last edited by wwiiavfan; Sep 29, 2021 at 01:52 AM.
So do coil overs like this mount to the underside of the lower control arm like the original shocks? If so, all of the load is on those two fasteners.
Or do they shorten the entire shock assembly accordingly so they can mount to the top side of the lower control arm?
Ok, that makes way more sense. No way those two little bolts were going to handle the up and down pounding weight of the car.
the coil overs do not put load on the two bolts! They rest on top of the control arm. Ridetec arms lower the shock mount and use a cross bolt. Global West arms use a thick lower plate to support the weight and use two bolts to hold shock to the top of the plate. FYI- Viking spec for minimum lower plate thickness is thicker than thickness of stock Corvette stamped power control arm.
Last edited by RU7376vettes; Sep 30, 2021 at 10:20 AM.
I have the single adjustable QA1 coil overs with 450# springs. My car is a 100% street car its fine with the 450"s. I also installed the QA1 11/4 sway bar.
I have the single adjustable QA1 coil overs with 450# springs. My car is a 100% street car its fine with the 450"s. I also installed the QA1 11/4 sway bar.
i have just ordered QA1 single adjustable from summit with 550 springs do they come with the top rubber pads for spring pocket . i also have tubular arms with thick solid welded bases
Ride quality is about 75% shock valving, but it must be correctly tuned to the spring rate.
With the adjustable shocks you should be able to tune them in to a wide variety of spring rates, and the cars would not ride all that much different.
i have just ordered QA1 single adjustable from summit with 550 springs do they come with the top rubber pads for spring pocket . i also have tubular arms with thick solid welded bases
They do not come with a rubber pad for the spring pocket. They are much easier to install than the factory springs. I hope you bought the optional bearing kit.
They do not come with a rubber pad for the spring pocket. They are much easier to install than the factory springs. I hope you bought the optional bearing kit.
Viking coil over kit
