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To those who installed 460lb. coil springs and discovered front sits too high.

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Old 09-13-2017, 06:17 PM   #1
sunflower 1972
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Default To those who installed 460lb. coil springs and discovered front sits too high.



Aluminum intake, cylinder heads and shorty headers. Car sits 3" higher measured from floor to center of fender lip compared to the old stock 293lb. springs. Going to take them out this weekend to cut them. Searched and read all the threads in regards to this issue and it appears I will need to cut at least 1 to 1 1/2 coils to get it back to at least the original height which was 26 3/4 inches. Just asking what those who had this problem how much of the spring did you cut to drop it. I really would like to do this cutting just once. Have poly control arm bushings in upper and lower control arms. Car has been driven about a hundred miles and camber has gone from negative to positive. 245/60-15 tires.
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Old 09-13-2017, 06:50 PM   #2
Dynra Rockets
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I cut 1 coil from the 460, which ironically makes it a 550.
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Old 09-13-2017, 06:53 PM   #3
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Quote:
Originally Posted by Dynra Rockets View Post
I cut 1 coil from the 460, which ironically makes it a 550.


Did drop 3 inches or abouts?
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Old 09-13-2017, 06:58 PM   #4
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I don't recall the exact amount as it was a while ago but I believe I was about 1.75 too high and now I'm probably 1/2" lower than I really want to be. Unfortunately each car is different and each person likes a different ride height so the feedback you get will be ball park at best. Since you cant add metal back on I would start with 1 coil and reassemble for each smaller cut. Remember that the spring rate get stiffer the more you shorten the free length so cutting has diminishing returns

Last edited by Dynra Rockets; 09-13-2017 at 07:00 PM.
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Old 09-13-2017, 07:14 PM   #5
sunflower 1972
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Thanks for your reply. I'm hoping others who had the same issue will chime in on this thread so I can get a better idea on how much to cut.
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Old 09-13-2017, 07:57 PM   #6
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How does the length of the 460 compare to the stock spring?
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Old 09-13-2017, 08:04 PM   #7
cagotzmann
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What brand of springs.

I have a ZZ383 , alum intake / heads etc. VB&P 550 lbs springs and my front end lower by 1"



Last edited by cagotzmann; 09-13-2017 at 08:05 PM.
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Old 09-13-2017, 08:05 PM   #8
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Not sure what springs I have but, I cut a coil and it only dropped 1". I had to heat up the bottom coil and bend them to get the rest of the drop i wanted..I only did this because I I would replace them if I went to far. BTW QA1 coilovers in stock control arms with 450lbs springs doesnt allow the car to be lowered.
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Old 09-13-2017, 10:35 PM   #9
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Measure coil spring when out, from floor to top of spring.
rotate tape measure , while keeping part on floor, around spring for correct amount to cut. Cut the bottom of spring.


1/2'' off spring = 1" body drop


be prepared to remove and replace springs a few times, as there is no going back if you cut too much, Also make sure spring is set in upper pocket correctly, if not, you may sit high still.


On my 80 L82 I tried 550lb springs, too high, cut them too much and went to Viking coilovers with 550 lb springs. Dropped the front 2", sitting at 26 1/4" ( bottomed out the coilovers ) They do make ones that drop 3". Installed on original a-arms, no issues, rides like a Cadillac now and shocks are adjustable too, win win
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Old 09-14-2017, 12:51 AM   #10
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Are you sure the springs are seated properly? That's a awful high.......the upper coil has to fit into the pocket. There's an indention for the end of the spring.

JIM
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Old 09-14-2017, 12:52 AM   #11
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Quote:
Originally Posted by cagotzmann View Post
What brand of springs.

I have a ZZ383 , alum intake / heads etc. VB&P 550 lbs springs and my front end lower by 1"


That is one sweet looking Vette right there! Great job!


JIM
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Old 09-14-2017, 03:38 AM   #12
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I had the 460lb on but it was too high , I put the 550lb in and it lowered it about an inch and a 1/4 .

here they are together during the swap over,




550lb is the clean one


I don't notice the ride being any different with the heavier springs

Last edited by bazza77; 09-14-2017 at 03:39 AM.
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Old 09-14-2017, 04:27 AM   #13
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I got my 460 spring from Summit, it was a Moog for $50. Did you seat your spring and get the car to settle by driving it?
Your car looks too high!
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Old 09-14-2017, 07:03 AM   #14
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I would start with a full coil. The reason your car is sitting up so high is the aluminum heads and intake.
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Old 09-14-2017, 10:26 AM   #15
sunflower 1972
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Quote:
Originally Posted by 427Hotrod View Post
Are you sure the springs are seated properly? That's a awful high.......the upper coil has to fit into the pocket. There's an indention for the end of the spring.

JIM


Yes. I specifically made sure the upper and lower spring pockets were indexed correctly.
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Old 09-14-2017, 02:44 PM   #16
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Quote:
Originally Posted by cagotzmann View Post
What brand of springs.

I have a ZZ383 , alum intake / heads etc. VB&P 550 lbs springs and my front end lower by 1"


Beautiful stance
What size wheels and tires?

Thanks
Glenn in San Diego

Last edited by gwgwgw; 09-14-2017 at 02:44 PM.
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Old 09-14-2017, 09:13 PM   #17
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Quote:
Originally Posted by gwgwgw View Post
Beautiful stance
What size wheels and tires?

Thanks
Glenn in San Diego
18 x 9.5" 4.75" Backspace 275 40R 18 Tires with NT01 tires so I can enjoy days like this.


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Old 09-14-2017, 09:16 PM   #18
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Quote:
Originally Posted by 427Hotrod View Post
That is one sweet looking Vette right there! Great job!


JIM
Thanks, Nice to see you also enjoy driving your car fast, ah really fast.
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Old 09-14-2017, 09:21 PM   #19
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Quote:
Originally Posted by sunflower 1972 View Post
Yes. I specifically made sure the upper and lower spring pockets were indexed correctly.
This is the before and after. I am guess the springs over all length / number of coils is more than the factory springs for 460 lbs spring.

Before VB&P street Slalom kit.



After



Last edited by cagotzmann; 09-14-2017 at 09:23 PM.
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Old 09-15-2017, 12:12 AM   #20
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Quote:
Originally Posted by cagotzmann View Post
18 x 9.5" 4.75" Backspace 275 40R 18 Tires with NT01 tires so I can enjoy days like this.


Are the front wheels and tires a different size, or is it the angle of the picture. What wheels? Minilites? Panasport?

Thanks so much
Glenn in San Diego
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