Gearsets - ZR-1 Net Registry Forums

Hammer · 11-14-2006

Hey Everybody,

I am considering some new gears for the Z over the winter.
What does a person go with, 4:10's or maybe 3:90's, 3:70's.
Any pluses or minuses a person should watch out for when buying them?
Where does everyone buy theirs?
Anything special or different about the installation that would cause a shop specializing in differentials to screw the install up?

I plan on drag racing the car a fair amount so if that's a consideration let me know.

Thanks

jonszr1 · 11-14-2006

Everyone I talked to says 410s . Puts you right at the top of 4th thru the lights. I know sometimes you have to grind the case iltlle bit . I. amsending mine to Corey henderson to have done. He a first class guy and excellent mech plus owns an11sec 368. If ya want his contact info pm me

Locobob · 11-14-2006

Here is a link that ought to help you decide John... http://www.f-body.org/gears/
At the top where it says make a selection you can scroll down and click on ZF6 rather than enter all the numbers yourself.

On a relatively stock car the 3.45's are pretty good for the drags as you can go through the traps in third at near redline (one less shift than most cars). I have 4.09's on my 368 which allows me to be near the top of 4th at the finish, however with street tires first gear is so short that I can't hook up worth a darn.

Hammer · 11-15-2006

Thanks for the info guys. Right now I am just thinking about mods. I am trying to fight them off, because I know how I am, enough is never enough. You know what I mean. The ZR-1 already runs fantastic and its not like it needs anything more. But I hate getting beat at the strip. That's where all this comes from, not driving around.

Great link Robert.

Thanks again,

11-14-2006	#1
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,647	Gearsets Hey Everybody, I am considering some new gears for the Z over the winter. What does a person go with, 4:10's or maybe 3:90's, 3:70's. Any pluses or minuses a person should watch out for when buying them? Where does everyone buy theirs? Anything special or different about the installation that would cause a shop specializing in differentials to screw the install up? I plan on drag racing the car a fair amount so if that's a consideration let me know. Thanks

11-14-2006	#2
jonszr1 Join Date: Sep 2006 Location: lone pine and mammoth lakes Posts: 1,406	Re: Gearsets Everyone I talked to says 410s . Puts you right at the top of 4th thru the lights. I know sometimes you have to grind the case iltlle bit . I. amsending mine to Corey henderson to have done. He a first class guy and excellent mech plus owns an11sec 368. If ya want his contact info pm me

11-14-2006	#3
Locobob Join Date: Jan 2004 Location: Portland, OR Posts: 1,047	Re: Gearsets Here is a link that ought to help you decide John... http://www.f-body.org/gears/ At the top where it says make a selection you can scroll down and click on ZF6 rather than enter all the numbers yourself. On a relatively stock car the 3.45's are pretty good for the drags as you can go through the traps in third at near redline (one less shift than most cars). I have 4.09's on my 368 which allows me to be near the top of 4th at the finish, however with street tires first gear is so short that I can't hook up worth a darn. __________________ Robert ZR-1 Net Registry Oregon State Director 91 ZR-1 #431 Black/Black LPE 368 Last edited by Locobob; 11-14-2006 at 11:01 PM.

11-15-2006	#4
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,647	Re: Gearsets Thanks for the info guys. Right now I am just thinking about mods. I am trying to fight them off, because I know how I am, enough is never enough. You know what I mean. The ZR-1 already runs fantastic and its not like it needs anything more. But I hate getting beat at the strip. That's where all this comes from, not driving around. Great link Robert. Thanks again,