lowering a vette....
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Racer
Joined: Apr 2007
Posts: 264
Likes: 0
From: Hamilton New Jersey
I just installed longer bolts on my 69. The stock ones were 6.5 inches while the others were 8. I also put in new rubber cushions since my old ones were very compressed. The rear only lowered 3/4 " I guess because I replaced the cushions with new ones. I have a big block car so the rear anti-sway bar brackets need to be removed so you can slide out the old bolts. WD-40 all those old bolts before cranking.
Instructor
Joined: Jan 2007
Posts: 227
Likes: 0
From: Dallas Texas
We offer front springs in rates from 450 to 800 lbs and rear spring bolts starting at the oem length of 6.5'' up to 10'' If you have any questions or need some help lowering your car give me a call at 972-243-3838.
http://www.duntovmotors.com/PartsMain.htm
Duntov Motor Company
http://www.duntovmotors.com/PartsMain.htm
Duntov Motor Company
Safety Car
Joined: May 2003
Posts: 3,814
Likes: 105
From: Dearborn Heights Michigan
Team Owner
Joined: Jul 2004
Posts: 40,338
Likes: 786
From: Redondo Beach, California
The cushions received with the VBP fiberglass spring kit and maybe some of their other kits are "tall," they have a sort of spherical shape on one end and the cushions are perhaps 2 inches tall. The stock cushions look like wafers, perhaps an inch thick. The message here is that the cushions are available in two thicknesses. This means that in conjunction with the trailing arm/spring bolt, you can adjust height not only by using a thick (tall) cushion, but also using the thinner stock cushion. For example, I did this using a VBP fiberglass spring and their longer trailing arm/spring bolts. I couldn't get a satisfactory ride height using their "tall" cushions, but the stock "wafer" type solved the problem.
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Racer
Joined: Apr 2007
Posts: 264
Likes: 0
From: Hamilton New Jersey
The cushions received with the VBP fiberglass spring kit and maybe some of their other kits are "tall," they have a sort of spherical shape on one end and the cushions are perhaps 2 inches tall. The stock cushions look like wafers, perhaps an inch thick. The message here is that the cushions are available in two thicknesses. This means that in conjunction with the trailing arm/spring bolt, you can adjust height not only by using a thick (tall) cushion, but also using the thinner stock cushion. For example, I did this using a VBP fiberglass spring and their longer trailing arm/spring bolts. I couldn't get a satisfactory ride height using their "tall" cushions, but the stock "wafer" type solved the problem.
Racer
Joined: Dec 2007
Posts: 297
Likes: 1
From: El Dorado Hills California
You guys that cut your springs; Did you cut from the top or the bottom? I appear to have progressive springs with coil spacing wider apart on the top and closer on the bottom. Also question the last revolution and if it should be heated and flattened to fit the pocket.
Don't mean to hijack...
Don't mean to hijack...
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
You guys that cut your springs; Did you cut from the top or the bottom? I appear to have progressive springs with coil spacing wider apart on the top and closer on the bottom. Also question the last revolution and if it should be heated and flattened to fit the pocket.
Don't mean to hijack...
Don't mean to hijack...
I cut off of the bottom, but my springs were not progressive.
Also, don't ever heat up the springs...it'll kill em.
I didn't flatten mine at all, just made sure the ends fell into the recesses in the spring pockets, and it all went together perfectly.
Team Owner
Joined: Sep 2006
Posts: 31,170
Likes: 4,248
From: Westminster Maryland
Anyone know about ONSTURN's question? I'm curious, too, about there being 2 thickesses of rear spring cushions? I always thought the 'wafer' type were just originals that had been compressed by so many years of weight. Is this part of the reason there are so many questions about getting the proper ride height after rear end work?
Regards,
Alan
Regards,
Alan
Racer
Joined: Jun 2004
Posts: 452
Likes: 0
From: Southern Md
Yes, we need to know about these cushions. Also do you have to remove the rear sway bar mounts to adjust the spring bolts.I can't see any way to get a wrench on the top of the bolt with the sway bar bracket there.
Melting Slicks
Joined: Jul 2004
Posts: 2,577
Likes: 2
From: Long Island New York
Use a 13/16" open end/box wrench and just put in through the end of the trailing arm. Adjust the length from the nut on the bottom.
