Recommended gear mfgs
Thread Starter
Le Mans Master
Joined: Feb 2021
Posts: 6,482
Likes: 4,325
From: Florida
2025 Corvette of the Year Finalist - Unmodified
2024 C5 of the Year Winner- Unmodified
2022 C5 of the Year Finalist - Unmodified
Recommended gear mfgs
Need new rear gears for my 2004…
What manufacturer is the go to for GM quality gear sets? My car is a low mileage m6 daily driver; no racing. Changing to 3.90’s
Does GM even make these anymore?
What manufacturer is the go to for GM quality gear sets? My car is a low mileage m6 daily driver; no racing. Changing to 3.90’s
Does GM even make these anymore?
Thread Starter
Le Mans Master
Joined: Feb 2021
Posts: 6,482
Likes: 4,325
From: Florida
2025 Corvette of the Year Finalist - Unmodified
2024 C5 of the Year Winner- Unmodified
2022 C5 of the Year Finalist - Unmodified
Thread Starter
Le Mans Master
Joined: Feb 2021
Posts: 6,482
Likes: 4,325
From: Florida
2025 Corvette of the Year Finalist - Unmodified
2024 C5 of the Year Winner- Unmodified
2022 C5 of the Year Finalist - Unmodified
They advised their gears are superior to those originally sold by GM, since Motive was, back in the early 2000s, competing as an aftermarket performance alternative. Their performance gears for street use are 8250 steel (or some number similar to that…), They use the FM Face Milling process with a 5 cut style.
Melting Slicks
Joined: Nov 2017
Posts: 2,306
Likes: 747
GM never made 3.90s for the C5 as far as I know. I opted for Motiv 4.10 a couple years ago. Shot peened and polished by the shop that installed them. Be very selective on who you have do the gears or just play it safe and buy a whole case from a reputable vendor.
