Wheel hop concerns
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Joined: Nov 2021
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From: NJ
Wheel hop concerns
Does anyone have an answer to the wheel hop problem I'm having with my 03 C5Z? I've put a HPI transaxle brace on it, also went thru and replaced all the bushing in the rear suspension. Stock tire sizes, the car has only 15k on it, the brace got rid of a lot of the hop, but not all of it. It seems to be the right rear wheel hops the most. I've been told to do a sway bar upgrade to a C6Z, just doesn't seem right way to go. Anyone have any suggestions ?
Tech Contributor
Joined: Jan 2007
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From: Dyer, IN
Does anyone have an answer to the wheel hop problem I'm having with my 03 C5Z? I've put a HPI transaxle brace on it, also went thru and replaced all the bushing in the rear suspension. Stock tire sizes, the car has only 15k on it, the brace got rid of a lot of the hop, but not all of it. It seems to be the right rear wheel hops the most. I've been told to do a sway bar upgrade to a C6Z, just doesn't seem right way to go. Anyone have any suggestions ?
Safety Car
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From: Wisconsin
Tech Contributor
Joined: Jan 2007
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From: Dyer, IN
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Tech Contributor
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From: Dyer, IN
Safety Car
Joined: Mar 2005
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From: Wisconsin
My experience with 430rwhp and a ECS brace C6 shocks and less than 30k on my suspension has been mixed, it depends on the road surface. I have Nitto NT555g2 rear tires and it's the either wheel spin, hook up or wheel hop. Better to have the first 2,
Seems like the 6spd cars have more of a problem than the autos. Maybe a wheel speed thing
Seems like the 6spd cars have more of a problem than the autos. Maybe a wheel speed thing
Tech Contributor
Joined: Jan 2007
Posts: 19,470
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From: Dyer, IN
Don't get caught up in internet lore. There is very little methodical troubleshooting with most of the "worked for me" recommendations online. .....but, it's your money to spend as you see fit.
Melting Slicks
Joined: Sep 2021
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You posted a link that does not contain evidence.
Until you support your claim with facts your claim is dismissed.
Safety Car
Joined: Mar 2005
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From: Wisconsin
Did you read post 9 in the link where the poster stated Phaft motor mounts cured his wheel hop
Here a copied it for you 🙄
BillY2K Pfadt motor mounts fixed it for me. After we installed the coilovers and T1 swaysbars it actually seemed to amplify the issue of hop. Getting everything aligned helped, but it was still bad. We did it before winter, so I'm thinking it was also cold roads and cold Michelin PS2 tires. I know certain tires HATE the cold, and the Michelins fall into that category. But, even on cold roads, with these motor mounts I can slam the gas in the first gear and get no hop at all. But there is a trade off of added NVH with the mounts. These cars are weird though, my old modded FRCs didn't hop at all, or if they did it was rare. It seems the Z06 is more prone to hop, possibly due to the stiffer rear spring and shock valving, hard to say why.
Here a copied it for you 🙄
BillY2K Pfadt motor mounts fixed it for me. After we installed the coilovers and T1 swaysbars it actually seemed to amplify the issue of hop. Getting everything aligned helped, but it was still bad. We did it before winter, so I'm thinking it was also cold roads and cold Michelin PS2 tires. I know certain tires HATE the cold, and the Michelins fall into that category. But, even on cold roads, with these motor mounts I can slam the gas in the first gear and get no hop at all. But there is a trade off of added NVH with the mounts. These cars are weird though, my old modded FRCs didn't hop at all, or if they did it was rare. It seems the Z06 is more prone to hop, possibly due to the stiffer rear spring and shock valving, hard to say why.
Last edited by feeder82; Feb 18, 2025 at 08:09 PM.
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From: NJ
Your posting has told me all to know now. I've learned to drive around it and as posted you'll be surprised how fast you can launch with a little skill and practice. I'm just used to a mopar (don't say it loud) and it is completely diff.
Race Director
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We appreciate the dedicated work you put into your 2003 C5Z! If you are unable to find a working resolution, we'd advise bringing your ride to a Chevrolet dealership. They may be able to offer assistance in locating a cause for the wheel hopping. Should you need help locating a facility near you, feel free to email our support team at socialmedia@gm.com anytime.
