Installing front coilovers for built 79
#1
Racer
Thread Starter
Installing front coilovers for built 79
Hi
I am running a 383 stroker on my 79 Vette which made the front end a lot lighter and I had to install some "temporary" shorter springs which eventually made the nose so low it's hard to drive in the city. I am not sure what springs to get. I am wondering if it makes any sense to order coilovers and would these work or are some other suspension components needed to accomodate them?
https://www.summitracing.com/int/par...model/corvette
I am running a 383 stroker on my 79 Vette which made the front end a lot lighter and I had to install some "temporary" shorter springs which eventually made the nose so low it's hard to drive in the city. I am not sure what springs to get. I am wondering if it makes any sense to order coilovers and would these work or are some other suspension components needed to accomodate them?
https://www.summitracing.com/int/par...model/corvette
#2
Team Owner
I tried the 450 pound that came with my qa1s. The spring weight caused to much front end drive under braking. The 550 pound might be the best choice
#3
Racer
Thread Starter
I looked it up on their website and perhaps the Drag R Series might be the best option to go for: https://www.qa1.net/suspension/stree...ro-coil-system
Do these fit right in replacing the original shocks? Just remove the old springs and done?
#4
Pro
https://www.qa1.net/suspension/stree...ro-coil-system
This page has a spring rate chart for their springs.
This page has a spring rate chart for their springs.
Last edited by 73racevette; 03-20-2019 at 10:09 AM.
#5
Team Owner
Very easy to install. I'm actually using 650# dual adjustment and I have a very light weight front end
The drag racing model is made for weight xfer and holding the front up
Some people install a lower aarm strengthening plate
The drag racing model is made for weight xfer and holding the front up
Some people install a lower aarm strengthening plate
#6
Drifting
I have the exact same setup in my car, the 450Lbs spring seems to match the ride of the composite rear spring that was in the car when I bought it. How low is your car sitting? Can you get measurements from the ground to center of the wheel well opening? have you lowered the rear any? Pics would help also.
Last edited by Kacyc3; 03-20-2019 at 10:32 AM.
#8
Racer
Thread Starter
Thanks for all the help. The rear is not lowered. I found one photo which shows the front end pretty well. I will try to get the measurements as well. Does this photo help?
The exhaust looks like falling down - it's already being replaced for Spring
The exhaust looks like falling down - it's already being replaced for Spring
Last edited by speedbird1229; 03-21-2019 at 10:10 PM.
#9
Team Owner
If you are not liking the dive with 450 lbs (a rate that seems to make most enthusiasts happy), then you most definitely need to come join us in the race rate camp! Generally if you will be operating it on the street, you are going to get some nose bounce at steady state cruising at like speeds lower than like 55 mph, but faster the heavier springs will settle in as you go faster!
#10
Team Owner
Interesting paint job. It looks jacked up in the back with lots of tire clearance. Some rear springs are sold with to much arch. Longer threaded bolts will bring it back down
#11
Drifting
Heck I say drop the rear!
If you are not liking the dive with 450 lbs (a rate that seems to make most enthusiasts happy), then you most definitely need to come join us in the race rate camp! Generally if you will be operating it on the street, you are going to get some nose bounce at steady state cruising at like speeds lower than like 55 mph, but faster the heavier springs will settle in as you go faster!
If you are not liking the dive with 450 lbs (a rate that seems to make most enthusiasts happy), then you most definitely need to come join us in the race rate camp! Generally if you will be operating it on the street, you are going to get some nose bounce at steady state cruising at like speeds lower than like 55 mph, but faster the heavier springs will settle in as you go faster!
#12
Racer
Thread Starter
Heck I say drop the rear!
If you are not liking the dive with 450 lbs (a rate that seems to make most enthusiasts happy), then you most definitely need to come join us in the race rate camp! Generally if you will be operating it on the street, you are going to get some nose bounce at steady state cruising at like speeds lower than like 55 mph, but faster the heavier springs will settle in as you go faster!
If you are not liking the dive with 450 lbs (a rate that seems to make most enthusiasts happy), then you most definitely need to come join us in the race rate camp! Generally if you will be operating it on the street, you are going to get some nose bounce at steady state cruising at like speeds lower than like 55 mph, but faster the heavier springs will settle in as you go faster!
Wanted to have a different look and since the car was built to be drag oriented I think it kinda fits The rear end holds the Dragvette 6-link and the factory leaf spring. What if I remove one layer of the spring? This should get it lower I guess but how about stiffness then...?
#13
Team Owner
Thanks. So you suggest perhaps going for the 550 lbs rate then?
Wanted to have a different look and since the car was built to be drag oriented I think it kinda fits The rear end holds the Dragvette 6-link and the factory leaf spring. What if I remove one layer of the spring? This should get it lower I guess but how about stiffness then...?
Wanted to have a different look and since the car was built to be drag oriented I think it kinda fits The rear end holds the Dragvette 6-link and the factory leaf spring. What if I remove one layer of the spring? This should get it lower I guess but how about stiffness then...?
I had the stock l82 9 leaf, smart struts and 3/4 inch adjustable sway. The first thing that I noticed and had friends film was the huge amount of rear end squat
So I went to a local spring shop and had them add a leaf making my rear spring into a 500 pound. It really saves the posi units from too much vertical movement. Very consistent 60 foot times
#14
Racer
Thread Starter
I drove around for the first 20 years in my vette with the one inch shorter VB&P 550 pound springs on the front. I also got into NHRA ET bracket racing. Starting out with a consistent 12.70 et I started out with real Goodyear wrinkle wall slicks like 9x28 on 10x15 wheels that I would change at the track
I had the stock l82 9 leaf, smart struts and 3/4 inch adjustable sway. The first thing that I noticed and had friends film was the huge amount of rear end squat
So I went to a local spring shop and had them add a leaf making my rear spring into a 500 pound. It really saves the posi units from too much vertical movement. Very consistent 60 foot times
I had the stock l82 9 leaf, smart struts and 3/4 inch adjustable sway. The first thing that I noticed and had friends film was the huge amount of rear end squat
So I went to a local spring shop and had them add a leaf making my rear spring into a 500 pound. It really saves the posi units from too much vertical movement. Very consistent 60 foot times
#15
Team Owner
It was just a phase in my life and I got tired of having to sit all day in the hot sun and travel to the other division 7 tracks. Local Reno/Fernley Nevada, Sacramento California, Sonoma California, and Las Vegas Nevada. It was a travelling ET bracket series and you had to make the majority of the events to be the season winner.
At first I just did the easy stuff, like gutted under the hood, removed the passenger seat, and spare tire carrier. Later on I spent a lot of money with a new light weight front end and none of the heavy metal. gutted interior, roll cage, fiber racing seat. all in an attempt to be very near the 3000 lbs with driver minimum for Vintage production road racing and I moved up to a 7500 rpm 427 SBC and a 5 speed manual. It's best et on a non prepped track and road racing slicks was 10.96 at up near 7200 feet ADA
This is my original 383 when I first installed it! Like 1994 or it could be pictures of a later refresh
Last edited by gkull; 03-26-2019 at 11:44 AM.
#16
Team Owner
When I changed over to the rear composite spring I changed my front springs to 550#'s. My ride height at the edge of the wheel wells are 27 1/2 inches both front and back. It's about stock. I know in this day and age everyone want the tires tucked up under the fender so it may look too high for some. I think it's perfect.
#17
Racer
Thread Starter
gkull - awesome ride! Thanks for sharing the info. Always love hearing about such experiences.
My good friend who is from a drag racing team told me that perhaps I should opt for the stock spring replacement instead or select a lower riding spring set. To me it seems like going back where I was - cutting the original springs and ending up with too low and too soft front end. What do you guys say about this idea?
My good friend who is from a drag racing team told me that perhaps I should opt for the stock spring replacement instead or select a lower riding spring set. To me it seems like going back where I was - cutting the original springs and ending up with too low and too soft front end. What do you guys say about this idea?
#18
Team Owner
The best option is to go with the adjustability of front coil over type setup and the rear use some kind of high pound rate. Then you can buy end bolts of any length that you want to set up the rear ride height
#19
Safety Car
Member Since: Nov 2005
Location: Lompoc, CA. Santa Barbara County
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whats up G Cool, my brother from another mother.
where do I find the lower arm strengthening plates you speak of? I’m about to be engine out for a few weeks, or months, and now would be a good time to strengthen my lower a arm mounts. If you recall, I ripped one right out in an autocross race a few years back.
Bee Jay
#20
Team Owner
whats up G Cool, my brother from another mother.
where do I find the lower arm strengthening plates you speak of? I’m about to be engine out for a few weeks, or months, and now would be a good time to strengthen my lower a arm mounts. If you recall, I ripped one right out in an autocross race a few years back.
Bee Jay
where do I find the lower arm strengthening plates you speak of? I’m about to be engine out for a few weeks, or months, and now would be a good time to strengthen my lower a arm mounts. If you recall, I ripped one right out in an autocross race a few years back.
Bee Jay
But anyway ddawson posted the lower machined aluminum piece he bought. I don't remember the vendor.