C7 vs C6 question
Thread Starter
Le Mans Master
Joined: Oct 2012
Posts: 6,391
Likes: 1,453
From: South Dakota
C7 vs C6 question
When I owned my C6, I often read about harmonic balancer issues that folks were having. I have a C7 now, and rarely if ever read about HB problems. Obviously they went from a LS3 to the LT1, but were there other changes that affect the HB?
Advanced
Joined: Oct 2020
Posts: 91
Likes: 83
From: Atlanta
My harmonic balancer needed to be replaced in my 2012 3 weeks after buying the car. Quick repair under warranty. No issues in the C7. I still miss my C6...it was supersonic blue and rare to see another like it.
Administrator
Joined: Mar 2001
Posts: 368,319
Likes: 24,777
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
I too have not heard of problems with the C7 harmonic balancer. No idea why, but perhaps they did use a different manufacturer for the HB.
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
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Race Director
Joined: Oct 2004
Posts: 13,597
Likes: 1,353
From: Home of the VOLS ! Knoxville, TN. Tennessee
St. Jude Donor '11-'12-'13, '15, '16-'17-'18-'19
CF Community Team
Joined: Apr 2016
Posts: 14,150
Likes: 7,435
From: Pittsburgh
2025 C6 of the Year Finalist - Unmodified
2024 C6 of the Year Finalist - Unmodified
2023 C6 of the Year Finalist - Unmodified
2022 C6 of the Year Finalist - Unmodified
2021 C6 of the Year Finalist - Unmodified
Race Director
Joined: Mar 2001
Posts: 19,964
Likes: 6,768
From: Bonneville Salt Flats
The HB problem did not start with the C6; many C5s had the issue, as did both mine and a friend's. However, I don't recall seeing anything here about it with C7s and my 2018 is perfectly fine (as is my replacement--still--with my C5). 
Scientific Negotiator
Joined: Jul 2005
Posts: 6,728
Likes: 2,033
From: USA
St. Jude Donor '07-'08-'10, '14
Advanced
Joined: Oct 2020
Posts: 91
Likes: 83
From: Atlanta
My C6 was my daily driver until I moved to the C7 which is my current daily driver. Corvettes are fantastic daily drivers which put a big smile on my face every time I get behind the wheel. Overall very reliable even when they have high miles, and frankly more reliable than most cars. Don't be afraid to enjoy your car! Aside from not having a back seat which I have no use for 95% of the time I think the C6 and C7 are very practical because of the large amount of space under the hatch. Life is too short to drive slow cars!
Le Mans Master
Joined: Oct 2005
Posts: 7,002
Likes: 2,679
The LT1 has many updates versus the LS3. The Gen V SB actually for the first time replaces many components (in design not just in part number) and is significantly different versus the Gen III and Gen IV (which share a lot of design flaws like the oil pump). Wouldn't surprise me if the HB was one thing that was significantly redesigned.