GM spanner wrench for C8 Corvette
Thread Starter
Drifting
Joined: Mar 2014
Posts: 1,599
Likes: 632
From: Pittsburgh PA
GM spanner wrench for C8 Corvette
I'm looking to lower the car and wondering what any of you guys out there have used to do so. I'm finding a lot of people saying that it's a special size that no one really seems to have but I can't find any part number for a GM specific wrench to adjust the stock height.
Le Mans Master
Joined: Feb 2006
Posts: 5,979
Likes: 4,142
From: Kansas City, MO
This says a generic adjustable wrench will work.
https://www.corvetteforum.com/forums...g-seats-2.html
https://www.corvetteforum.com/forums...g-seats-2.html
Racer
Joined: Aug 2019
Posts: 299
Likes: 161
From: Texas
I'm looking to lower the car and wondering what any of you guys out there have used to do so. I'm finding a lot of people saying that it's a special size that no one really seems to have but I can't find any part number for a GM specific wrench to adjust the stock height.
This was cut and pasted from that post and it's from a C8 engineer:
HERE YOU GO , Straight from C8 Engineer !
Here is the general guidance:
Our spring seat wants a spanner wrench capable to 4 7/8th in (124mm)
Our lock nut wants a spanner wrench capable to 3 1/16th in (79mm)
Our anti-rotation holes want a pin wrench capable to 2 3/32nds in (53mm)
For the spring seat I suggest
McMaster-Carr hook spanner #6975A25 (https://www.mcmaster.com/6975A25)
AMPCO Adjustable Hook spanner #4RPC1 / WP-6-ST (https://www.grainger.com/product/AMP...r-Wrench-4RPC1)
Adjustable is a bit more challenging as the hook can move, but this one tool can technically do both the nut and the seat, no where as easy as fixed tools though
For the lock nut I suggest
McMaster-Carr hook spanner #6975A21 (https://www.mcmaster.com/6975A21)
For the pin wrench I suggest
Westward Fixed Pin Spanner wrench 5RDZ4 (https://www.grainger.com/product/WES...rchQuery=5RDZ4)
Good luck and let us know how this works out. I'll watch it on your next YouTube post
Thread Starter
Drifting
Joined: Mar 2014
Posts: 1,599
Likes: 632
From: Pittsburgh PA
I saved this from another post a while ago as I would be using the process to lower mine too.
This was cut and pasted from that post and it's from a C8 engineer:
HERE YOU GO , Straight from C8 Engineer !
Here is the general guidance:
Our spring seat wants a spanner wrench capable to 4 7/8th in (124mm)
Our lock nut wants a spanner wrench capable to 3 1/16th in (79mm)
Our anti-rotation holes want a pin wrench capable to 2 3/32nds in (53mm)
For the spring seat I suggest
McMaster-Carr hook spanner #6975A25 (https://www.mcmaster.com/6975A25)
AMPCO Adjustable Hook spanner #4RPC1 / WP-6-ST (https://www.grainger.com/product/AMP...r-Wrench-4RPC1)
Adjustable is a bit more challenging as the hook can move, but this one tool can technically do both the nut and the seat, no where as easy as fixed tools though
For the lock nut I suggest
McMaster-Carr hook spanner #6975A21 (https://www.mcmaster.com/6975A21)
For the pin wrench I suggest
Westward Fixed Pin Spanner wrench 5RDZ4 (https://www.grainger.com/product/WES...rchQuery=5RDZ4)
Good luck and let us know how this works out. I'll watch it on your next YouTube post
This was cut and pasted from that post and it's from a C8 engineer:
HERE YOU GO , Straight from C8 Engineer !
Here is the general guidance:
Our spring seat wants a spanner wrench capable to 4 7/8th in (124mm)
Our lock nut wants a spanner wrench capable to 3 1/16th in (79mm)
Our anti-rotation holes want a pin wrench capable to 2 3/32nds in (53mm)
For the spring seat I suggest
McMaster-Carr hook spanner #6975A25 (https://www.mcmaster.com/6975A25)
AMPCO Adjustable Hook spanner #4RPC1 / WP-6-ST (https://www.grainger.com/product/AMP...r-Wrench-4RPC1)
Adjustable is a bit more challenging as the hook can move, but this one tool can technically do both the nut and the seat, no where as easy as fixed tools though
For the lock nut I suggest
McMaster-Carr hook spanner #6975A21 (https://www.mcmaster.com/6975A21)
For the pin wrench I suggest
Westward Fixed Pin Spanner wrench 5RDZ4 (https://www.grainger.com/product/WES...rchQuery=5RDZ4)
Good luck and let us know how this works out. I'll watch it on your next YouTube post
Burning Brakes
Joined: Mar 2006
Posts: 790
Likes: 63
From: Ft Worth TX
Thread Starter
Drifting
Joined: Mar 2014
Posts: 1,599
Likes: 632
From: Pittsburgh PA
Pro
Joined: Oct 2014
Posts: 528
Likes: 325
Melting Slicks
Joined: May 2006
Posts: 2,936
Likes: 260
From: Westchester County New York
Now if I just had the car
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski