Ride Height
Racer
Joined: Nov 2011
Posts: 401
Likes: 40
Hi 7T1,
Are you sure about the relationship between bolt length and body drop?
My experience was that the body dropped 1/2 the increase in bolt length, (not twice the increase), because the center point of the spring stays mounted at the same point, and the bolt end of the spring is traveling in an arc.
Isn't that the reason some people feel they need to go beyond the 8" bolts and have problems with the even longer bolt touching the wheel or tire?
Regards,
Alan
Are you sure about the relationship between bolt length and body drop?
My experience was that the body dropped 1/2 the increase in bolt length, (not twice the increase), because the center point of the spring stays mounted at the same point, and the bolt end of the spring is traveling in an arc.
Isn't that the reason some people feel they need to go beyond the 8" bolts and have problems with the even longer bolt touching the wheel or tire?
Regards,
Alan
Thread Starter
Instructor
Joined: Apr 2010
Posts: 177
Likes: 0
From: Fairview PA
I measured mine and I am a whopping 32" to the bottom of the fender lip to the ground. One hell of a off road vette... 
I agree that I think she will drop some driving, not sure that much! I would be ok with it around 28" in the rear, the font I am ok with and think she will settle ok there. Considering this 10" bolt but does anyone know where to fit it? I think the one that came in the kit is 8".
I agree that I think she will drop some driving, not sure that much! I would be ok with it around 28" in the rear, the font I am ok with and think she will settle ok there. Considering this 10" bolt but does anyone know where to fit it? I think the one that came in the kit is 8".
Thread Starter
Instructor
Joined: Apr 2010
Posts: 177
Likes: 0
From: Fairview PA
Racer
Joined: Nov 2011
Posts: 401
Likes: 40
I measured mine and I am a whopping 32" to the bottom of the fender lip to the ground. One hell of a off road vette... I agree that I think she will drop some driving, not sure that much! I would be ok with it around 28" in the rear, the font I am ok with and think she will settle ok there. Considering this 10" bolt but does anyone know where to fit it? I think the one that came in the kit is 8".
I agree that I think she will drop some driving, not sure that much! I would be ok with it around 28" in the rear, the font I am ok with and think she will settle ok there. Considering this 10" bolt but does anyone know where to fit it? I think the one that came in the kit is 8".
Thread Starter
Instructor
Joined: Apr 2010
Posts: 177
Likes: 0
From: Fairview PA
Found these bolts. Want to try, but $50? Really? Agh...
http://www.ecklerscorvette.com/corve...1984-1996.html
These are for 1984-1996, anyone know if they will work on a 69?
http://www.ecklerscorvette.com/corve...1984-1996.html
These are for 1984-1996, anyone know if they will work on a 69?
Racer
Joined: Nov 2011
Posts: 401
Likes: 40
Found these bolts. Want to try, but $50? Really? Agh...
http://www.ecklerscorvette.com/corve...1984-1996.html
These are for 1984-1996, anyone know if they will work on a 69?
http://www.ecklerscorvette.com/corve...1984-1996.html
These are for 1984-1996, anyone know if they will work on a 69?
Thread Starter
Instructor
Joined: Apr 2010
Posts: 177
Likes: 0
From: Fairview PA
Race Director
Joined: Apr 2011
Posts: 11,183
Likes: 3,334
From: North of Toronto - Ontario
Hi 7T1,
Are you sure about the relationship between bolt length and body drop?
My experience was that the body dropped 1/2 the increase in bolt length, (not twice the increase), because the center point of the spring stays mounted at the same point, and the bolt end of the spring is traveling in an arc.
Isn't that the reason some people feel they need to go beyond the 8" bolts and have problems with the even longer bolt touching the wheel or tire?
Regards,
Alan
Are you sure about the relationship between bolt length and body drop?
My experience was that the body dropped 1/2 the increase in bolt length, (not twice the increase), because the center point of the spring stays mounted at the same point, and the bolt end of the spring is traveling in an arc.
Isn't that the reason some people feel they need to go beyond the 8" bolts and have problems with the even longer bolt touching the wheel or tire?
Regards,
Alan
Somewhere around 1/2 - 2/3 of the length change (closer to 1/2)
One of the big "concern" with the 10" bolts seems to be that they are hanging below the rim at that point and if the tire went flat would/could touch the pavement.
The move to a 17 or 18 inch rim would help this, but would also help close the gap between the wheel and fender anyway.
I'm not sure if the arc geometry would be off in this case since the car is sitting soooo high the half-shafts must be going on a fair angle now so the longer bolts would just bring the rear down to where it "should" be so the geometry should actually be better....but I'd have to actually sit and think about that before I was sure.
Mooser
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Racer
Joined: Nov 2011
Posts: 401
Likes: 40
Melting Slicks
Joined: Aug 2012
Posts: 3,487
Likes: 83
From: Titusville Florida
Instructor
Joined: Jul 2012
Posts: 198
Likes: 2
From: St. Catharines Ontario
I measured mine and I am a whopping 32" to the bottom of the fender lip to the ground. One hell of a off road vette... I agree that I think she will drop some driving, not sure that much! I would be ok with it around 28" in the rear, the font I am ok with and think she will settle ok there. Considering this 10" bolt but does anyone know where to fit it? I think the one that came in the kit is 8".
I agree that I think she will drop some driving, not sure that much! I would be ok with it around 28" in the rear, the font I am ok with and think she will settle ok there. Considering this 10" bolt but does anyone know where to fit it? I think the one that came in the kit is 8".I'm sitting at about 27.75" from ground to fender lip. Thats with a VBP suspension and 255/60/15
Drifting
Joined: Mar 2011
Posts: 1,886
Likes: 9
The factory rubber suspension bushings don't rotate as the suspension moves. They just twist up and down. You tighten them at the regular ride height so you are positioning the bushings in the center of their travel. If you tighten the bushings with the wheel at full droop, you will twist the bushings past the amount of movement they are designed to accomodate when you drive it. They won't last as long as they should.
Racer
Joined: Jan 2005
Posts: 370
Likes: 77
From: Perth Western Australia
This is my ride height using a shortened VBP 330lb spring, 10" C4 link bolts and double offset trailing arms (to allow sufficient spring to rim clearance).
The rims are 18 x 9.5 with 5.25" backspace.
The rims are 18 x 9.5 with 5.25" backspace.
Racer
Joined: Nov 2011
Posts: 401
Likes: 40
allow sufficient spring to rim clearance).