RIDETECH did a writeup on my C4
Thread Starter
Heel & Toe
Joined: Aug 2016
Posts: 22
Likes: 31
From: San Jose, CA
RIDETECH did a writeup on my C4
Pretty cool write up and video about my C4. I yanked the L98 in January 2021 and finished the LS swap in August of 2021 and just went straight to autocrossing it. I personally like how the videos and pictures came out. Check it out
https://www.ridetech.com/scott-fraser-c4-corvette/
Scott Fraser
https://www.ridetech.com/scott-fraser-c4-corvette/
Scott Fraser
Drifting
Joined: Jul 2004
Posts: 1,356
Likes: 291
From: MA
Scott nice write up and video. Your car looks great!
I can't say enough good things about the Ridetech coilover setup, I went with the single adjustable HQ shocks. Ride and handling improved dramatically compared to my Z51 stock setup.
To answer Yakmastermax's question about the ride height adjustment. You can lower the car so the tires touch the fenders if you want to. I didn't go as low as Scott (looking at his video).
The ride quality doesn't seem to degrade as you lower the car, although I haven't tried putting it into the weeds. Too many potholes and speed bumps in my area.
The kit comes with a spanner wrench to adjust the height of each coilover and the adjustment is retained by an Allen screw which tightens down the collar.
I can't say enough good things about the Ridetech coilover setup, I went with the single adjustable HQ shocks. Ride and handling improved dramatically compared to my Z51 stock setup.
To answer Yakmastermax's question about the ride height adjustment. You can lower the car so the tires touch the fenders if you want to. I didn't go as low as Scott (looking at his video).
The ride quality doesn't seem to degrade as you lower the car, although I haven't tried putting it into the weeds. Too many potholes and speed bumps in my area.
The kit comes with a spanner wrench to adjust the height of each coilover and the adjustment is retained by an Allen screw which tightens down the collar.
Le Mans Master
Joined: Aug 2015
Posts: 6,120
Likes: 1,997
From: St. Charles MO
Scott, your car is an 87 with the original early C4 subframe and suspension geometry? That should definitely be the better C4 version to have for autocross and especially for tight courses like the Good Guys events. However, Ridetech doesn't offer a coilover kit for that, and the front shock towers on these early cars are notoriously too narrow for a standard 2.5" coilover spring. How did you make it work?
Pro
Joined: Oct 2004
Posts: 504
Likes: 82
From: Melbourne Victoria
Scott, your car is an 87 with the original early C4 subframe and suspension geometry? That should definitely be the better C4 version to have for autocross and especially for tight courses like the Good Guys events. However, Ridetech doesn't offer a coilover kit for that, and the front shock towers on these early cars are notoriously too narrow for a standard 2.5" coilover spring. How did you make it work?
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Drifting
Joined: Jun 2020
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From: Stay dangerous my friends
Scott, your car is an 87 with the original early C4 subframe and suspension geometry? That should definitely be the better C4 version to have for autocross and especially for tight courses like the Good Guys events. However, Ridetech doesn't offer a coilover kit for that, and the front shock towers on these early cars are notoriously too narrow for a standard 2.5" coilover spring. How did you make it work?
Drifting
Joined: Jun 2020
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From: Northwest Ohio
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
At ~1:40 in the video he said it still had "the original ZF 6 speed", I believe.
Also at 0:52, Cuisinart wheels....'88^, there.
I think it's an '89 car.
.
Also at 0:52, Cuisinart wheels....'88^, there.
I think it's an '89 car.
.
Last edited by Tom400CFI; Feb 28, 2022 at 10:38 AM.
Race Director
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From: United States
Pro
Joined: Oct 2004
Posts: 504
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From: Melbourne Victoria
Pro
Joined: Oct 2004
Posts: 504
Likes: 82
From: Melbourne Victoria
Thread Starter
Heel & Toe
Joined: Aug 2016
Posts: 22
Likes: 31
From: San Jose, CA
Sorry I forgot my password for my cell phone and had to wait to get home to respond. It is a 1989. I previously had a 1987 and sold it instead of swapping over everything to 1989 I just sold the 1987 (my old black car) to buy the blue 1989.
(now looking how Good Guys changed the rules it would have made sense to keep the 1987).
I am running 7" springs instead of the 8" springs the usually come with. Coming from Miata work you try to cut out whatever weight you can and why have the extra spring if you don't need it. When I first got the car running I set it up too low and raised the car throughout the year.
Krackenvette, Convas is correct. The wheels are Flow One F4 18x10.5
Last year I ran 1 set of Nankang 275/35/18
Thank you for all the comments. I will try to respond quicker.
(now looking how Good Guys changed the rules it would have made sense to keep the 1987).
I am running 7" springs instead of the 8" springs the usually come with. Coming from Miata work you try to cut out whatever weight you can and why have the extra spring if you don't need it. When I first got the car running I set it up too low and raised the car throughout the year.
Krackenvette, Convas is correct. The wheels are Flow One F4 18x10.5
Last year I ran 1 set of Nankang 275/35/18
Thank you for all the comments. I will try to respond quicker.
Pro
Joined: Jun 2008
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From: Louisville Kentucky
2023 C4 of the Year Finalist - Unmodified
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Team Owner
Joined: Aug 2004
Posts: 21,543
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From: Park City Utah
You sure about that? I bought an '89 that had those.....so....I think you're wrong. As I said above.... '88, '89, '90. 
Have a few clicks through the years HERE....what do ya see?
Have a few clicks through the years HERE....what do ya see?