4:10 gears - ZR-1 Net Registry Forums

Vette73 · 06-04-2018

Thinking of putting 4:10 gears in my 91.....Are viper gears the preferred choice? What do I exactly need? Who has the best price for parts and what exactly do I need?
Thnx...

-=Jeff=- · 06-04-2018

I bought a dana spicer set from Just Differentials ( but that was in 2012)

their PN: D44HD-410-OE

http://www.justdifferentials.com/D44...4hd-411-oe.htm

Vette73 · 06-04-2018

Quote:

Originally Posted by -=Jeff=-

I bought a dana spicer set from Just Differentials ( but that was in 2012)

their PN: D44HD-410-OE

http://www.justdifferentials.com/D44...4hd-411-oe.htm

Sounds good......Does it come with gaskets? How do you like them?

-=Jeff=- · 06-04-2018

No gaskets, RTV for the cover. Being my ZR-1 is stock it was a worth while mod.

G8nightman · 06-05-2018

Get a rebuild kit IMG_3221.jpg

Sent from my iPhone using ZR-1 Net Registry

Pete · 06-05-2018

John, can i ask why you want 4.10's?
You'll be sliding/spinning tires.

I just finished my 391ci stock gears,new Nitto Drag Radials and it's a smoke show.

Pete

Quote:

Originally Posted by Vette73

Thinking of putting 4:10 gears in my 91.....Are viper gears the preferred choice? What do I exactly need? Who has the best price for parts and what exactly do I need?
Thnx...

-=Jeff=- · 06-05-2018

Quote:

Originally Posted by Pete

John, can i ask why you want 4.10's?
You'll be sliding/spinning tires.

I just finished my 391ci stock gears,new Nitto Drag Radials and it's a smoke show.

Pete

I have to agree with Pete too, if you have a modded motor, unless you have wheel like Dominic and need the gear to compensate for that, Stock motor the 4.10 is a fun mod and worth it.. on a modded motor it might be too much

WARP TEN · 06-05-2018

Despite Pete's preference for 3.45s for drag racing. I think 4.10s were one of the best mods I did on both of my ZR-1s (along with the Hurst short shifter set up to look stock). One car had about 450 HP and one had closer to 500. Really made around-town street driving better . Face it, 99% of the time you will not be applying full power on every takeoff. If you are drag racing you can lug the engine a bit at the start, although you will need to shift to 4th in the quarter mile. For the three or four times I actually drag raced my cars it was fine with me. Not trying to set any records, just have fun. Depends on your goals for the car and your typical use. Your mileage may vary.--Bob

Vette73 · 06-09-2018

Quote:

Originally Posted by WARP TEN

Despite Pete's preference for 3.45s for drag racing. I think 4.10s were one of the best mods I did on both of my ZR-1s (along with the Hurst short shifter set up to look stock). One car had about 450 HP and one had closer to 500. Really made around-town street driving better . Face it, 99% of the time you will not be applying full power on every takeoff. If you are drag racing you can lug the engine a bit at the start, although you will need to shift to 4th in the quarter mile. For the three or four times I actually drag raced my cars it was fine with me. Not trying to set any records, just have fun. Depends on your goals for the car and your typical use. Your mileage may vary.--Bob

When my 3:36 gears broke in my 73 I came across a complete 3:70 unit so I installed that.......The fun factor and the pick up on the low end was noticeable....Now, if the car had a five speed I stead of a four speed it would be the gear of choice....

Even though my Z is modified I'm guessing the 4:10 would make the car more snappier and more fun around town...

With all the insane horsepower the new ZR-1 and Z0-6 have I'm sure Chevy isn't worrying about spinning tires....Cheers.

Bob Eyres · 06-09-2018

The perennial conundrum, to go with 4.10's or stock gears, that is the question.
The quick response is, 4.10's of course, if you care about performance.
It's one of the cheapest mods and gives you more performance when and where you need it.

The stock gear ratio was used by GM for MPG., to avoid the gas guzzler tax, not for optimum performance.

Unless you spend a lot of time cruising above 150 mph, 4.10's are the optimal gear. When was the last time a three speed stick was the optimal transmission for the quarter mile? 1956?

The LT5 is not a torque monster, it's a rev monster. It's more efficient that way. With 4.10's you can take fourth gear to 140 mph. And you still have two more gears to get all the mpg you want.

My car has only about 425 hp., but even if I had 725 hp. I'd still use the 4.10's. Because if you have no traction in 1st. gear, you have a tire problem not a gear problem. Even with street tires 4.10's are better than bogging down with a tall gear. The solution is practice.

JMHO

06-04-2018	#1
Vette73 Join Date: Nov 2014 Location: Brooklyn ny Posts: 1,045	4:10 gears Thinking of putting 4:10 gears in my 91.....Are viper gears the preferred choice? What do I exactly need? Who has the best price for parts and what exactly do I need? Thnx...

06-04-2018	#2
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,132	Re: 4:10 gears I bought a dana spicer set from Just Differentials ( but that was in 2012) their PN: D44HD-410-OE http://www.justdifferentials.com/D44...4hd-411-oe.htm __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - 3" Magnaflow Bullet cats - LT4 Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

06-04-2018	#4
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,132	Re: 4:10 gears No gaskets, RTV for the cover. Being my ZR-1 is stock it was a worth while mod. __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - 3" Magnaflow Bullet cats - LT4 Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

06-05-2018	#5
G8nightman Join Date: Dec 2007 Location: NYC Posts: 1,182	Re: 4:10 gears Get a rebuild kit IMG_3221.jpg Sent from my iPhone using ZR-1 Net Registry __________________ 90 Chevy ZR1 LPE #2315 'SOLD' 90 Chevy ZR1 LPE #2774 'SOLD' 91 Chevy ZR1 Callaway aerobody 91 Chevy ZR1 #1512 91 Chevy ZR1 #951 95 Chevy ZR1 #338 'SOLD' 91 BMW 850i 94 BMW 850csi 95 BMW 850csi 94 Lotus Esprit S4 07 Benz CLS550 06 BMW M5 "SOLD"

06-05-2018	#8
WARP TEN Join Date: Apr 2007 Location: Lake Bluff, IL Posts: 2,036	Re: 4:10 gears Despite Pete's preference for 3.45s for drag racing. I think 4.10s were one of the best mods I did on both of my ZR-1s (along with the Hurst short shifter set up to look stock). One car had about 450 HP and one had closer to 500. Really made around-town street driving better . Face it, 99% of the time you will not be applying full power on every takeoff. If you are drag racing you can lug the engine a bit at the start, although you will need to shift to 4th in the quarter mile. For the three or four times I actually drag raced my cars it was fine with me. Not trying to set any records, just have fun. Depends on your goals for the car and your typical use. Your mileage may vary.--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"

06-09-2018	#10
Bob Eyres Join Date: Jul 2005 Location: Jupiter, Fl. Posts: 815	Re: 4:10 gears The perennial conundrum, to go with 4.10's or stock gears, that is the question. The quick response is, 4.10's of course, if you care about performance. It's one of the cheapest mods and gives you more performance when and where you need it. The stock gear ratio was used by GM for MPG., to avoid the gas guzzler tax, not for optimum performance. Unless you spend a lot of time cruising above 150 mph, 4.10's are the optimal gear. When was the last time a three speed stick was the optimal transmission for the quarter mile? 1956? The LT5 is not a torque monster, it's a rev monster. It's more efficient that way. With 4.10's you can take fourth gear to 140 mph. And you still have two more gears to get all the mpg you want. My car has only about 425 hp., but even if I had 725 hp. I'd still use the 4.10's. Because if you have no traction in 1st. gear, you have a tire problem not a gear problem. Even with street tires 4.10's are better than bogging down with a tall gear. The solution is practice. JMHO __________________ "It's about the car, not the people." 1991 ZR-1 White/Black #1236 (Owner since 1994). Stock engine with bolt-ons: Hurst shifter,"Forced Air" intake, Coplon duct, Bee Cool Radiator, Demon coils, Jeal prom, Watson headers, X pipe, 3" B&B's, Rippie flywheel, 4:10 gears, A molds, Toyo Proxes-R888's 12.06@117mph. 1.76 60ft. Last edited by Bob Eyres; 06-09-2018 at 06:28 PM.