Any experience with Corvette Central's rebuilt rear diffs? - ZR-1 Net Registry Forums

JT ZR-Won · 4 Days Ago

My Z has developed a tiny rear diff leak that's coming from the cover that's more annoying than a problem. I would really like to get it fixed though. The car currently has 3:73 gears and some of the pricing I am getting to make this repair seems pretty high.

I love the 3:73 gears, but I still cannot really use 6th gear very much at all and I live very close to I-75 here in FL. A set of 4:10's would be ideal.

I found this rebuilt differential on Corvette Central
https://www.corvettecentral.com/c4-8...uilt-nd-582184

Anybody have any experience with these? I realize I need new speedo gears, but if this is a straight up swap, I can just about swap out 4:10's for my 3:73's for around the same price. I'm just throwing some ideas around

Jay

Usa2405 · 4 Days Ago

Should be able to get a 4.10 ring and pinion with a full rebuild/install kit for about $700. A good gear shop would install for $500 or less. The cover leak would be easily fixed as part of the gear install. That would be my recommendation.

WARP TEN · 3 Days Ago

You might chat with Marc Haibeck. He and Bob rebuild a lot of differentials, or at least replace the stock 3.45s with 4.10s fairly regularly. Bob does most all of the rear end work. --Bob

JT ZR-Won · 3 Days Ago

Good to know, thank you guys!

4 Days Ago	#1
JT ZR-Won Join Date: Aug 2021 Location: Estero, FL Posts: 141	Any experience with Corvette Central's rebuilt rear diffs? My Z has developed a tiny rear diff leak that's coming from the cover that's more annoying than a problem. I would really like to get it fixed though. The car currently has 3:73 gears and some of the pricing I am getting to make this repair seems pretty high. I love the 3:73 gears, but I still cannot really use 6th gear very much at all and I live very close to I-75 here in FL. A set of 4:10's would be ideal. I found this rebuilt differential on Corvette Central https://www.corvettecentral.com/c4-8...uilt-nd-582184 Anybody have any experience with these? I realize I need new speedo gears, but if this is a straight up swap, I can just about swap out 4:10's for my 3:73's for around the same price. I'm just throwing some ideas around Jay

4 Days Ago	#2
Usa2405 Join Date: Jan 2025 Location: North Texas Posts: 11	Re: Any experience with Corvette Central's rebuilt rear diffs? Should be able to get a 4.10 ring and pinion with a full rebuild/install kit for about $700. A good gear shop would install for $500 or less. The cover leak would be easily fixed as part of the gear install. That would be my recommendation.

3 Days Ago	#3
WARP TEN Join Date: Apr 2007 Location: Lake Bluff, IL Posts: 2,143	Re: Any experience with Corvette Central's rebuilt rear diffs? You might chat with Marc Haibeck. He and Bob rebuild a lot of differentials, or at least replace the stock 3.45s with 4.10s fairly regularly. Bob does most all of the rear end work. --Bob __________________ 2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough" Last edited by WARP TEN; 2 Days Ago at 10:12 AM.

3 Days Ago	#4
JT ZR-Won Join Date: Aug 2021 Location: Estero, FL Posts: 141	Re: Any experience with Corvette Central's rebuilt rear diffs? Good to know, thank you guys!