need suggestions for 4.10 upgrade
Thread Starter
Pro
Joined: Mar 2007
Posts: 585
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From: Coral Springs Florida
need suggestions for 4.10 upgrade
Been exploring my options for my 4.10 gear ratio upgrade. I need advice on what would be the better way to go $$?. Zip corvettes offers all the parts; 4.10 Ring & Pinion, HD RH Axle upgrade, RH Axle shaft gear upgrade & HD Diff LH Output shaft total $1,399.80. If I bought a complete Stage II unit from ECC- $1,699.95 But that doesn't include all the above upgrades but they do upgrade your Diff casing I.E Deburring. Well? which way would you go? What would average labor time be for assembing all the above in my diff case. Thanks in advance to all my corvette Bros 
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 266
From: St. Louis, MO
St. Jude Donor '08
My advice? Just drop the car and your credit card at Horsepower Sales in Pompano. Roger and the boys will return it to you ready to go. The have a local builder of rears or they also put in DTE rears. Get a DTE brace and hardened left output shaft if you plan to do drag racing.
They've done the rears in my C5 and now my C6. My favorite mod.
I always go with 3.90's since 4.10's top out at 125 in the quarter and if I go heads and cam I'll be over 125. 3.90's top out at 130 and I won't get that fast.
They've done the rears in my C5 and now my C6. My favorite mod.
I always go with 3.90's since 4.10's top out at 125 in the quarter and if I go heads and cam I'll be over 125. 3.90's top out at 130 and I won't get that fast.
Drifting
Joined: Jan 2005
Posts: 1,827
Likes: 301
From: Tucson Arizona
St. Jude Donor '08
Not top speed
My advice? Just drop the car and your credit card at Horsepower Sales in Pompano. Roger and the boys will return it to you ready to go. The have a local builder of rears or they also put in DTE rears. Get a DTE brace and hardened left output shaft if you plan to do drag racing.
They've done the rears in my C5 and now my C6. My favorite mod.
I always go with 3.90's since 4.10's top out at 125 in the quarter and if I go heads and cam I'll be over 125. 3.90's top out at 130 and I won't get that fast.
They've done the rears in my C5 and now my C6. My favorite mod.
I always go with 3.90's since 4.10's top out at 125 in the quarter and if I go heads and cam I'll be over 125. 3.90's top out at 130 and I won't get that fast.
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
My advice? Just drop the car and your credit card at Horsepower Sales in Pompano. Roger and the boys will return it to you ready to go. The have a local builder of rears or they also put in DTE rears. Get a DTE brace and hardened left output shaft if you plan to do drag racing.
They've done the rears in my C5 and now my C6. My favorite mod.
I always go with 3.90's since 4.10's top out at 125 in the quarter and if I go heads and cam I'll be over 125. 3.90's top out at 130 and I won't get that fast.
They've done the rears in my C5 and now my C6. My favorite mod.
I always go with 3.90's since 4.10's top out at 125 in the quarter and if I go heads and cam I'll be over 125. 3.90's top out at 130 and I won't get that fast.
As far as where to get the diff from, go to a tuner/installer and have them get the diff for you from the source they use. If there is an issue and you have a bad unit, no installer is going to eat the cost of removing the diff and returning it for you for free for the replacement diff. If the installer got the unit for you, its his issue.
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Safety Car
Joined: Mar 2007
Posts: 4,235
Likes: 0
From: Jacksonville FL
I don't mean to thread-jack, but I've searched and searched and I'm exhausted; can someone please explain the difference in putting 4.10s on a Z51 car as opposed to the regular MN6?
(I've read threads saying the 3.90s were the way to go in Z51 equipped cars... why is that, exactly? I know the Z51 is geared a little lower already in 1-3, right?)
So confused...
(I've read threads saying the 3.90s were the way to go in Z51 equipped cars... why is that, exactly? I know the Z51 is geared a little lower already in 1-3, right?)
So confused...
Melting Slicks
Joined: Jul 2007
Posts: 2,278
Likes: 2
Hey Z06 Fan,
I would love to discuss a 4.10 gear upgrade for your hot rod. You can contact us at 954-984-8040 9-6 M-F. Our shop car has the 4.10s in it. I just love those 1.50 60'
I look forward in having the opportunity to earn your business.
Jeremy Preston
www.myspace.com/horsepowersales
www.hpsalesflorida.com
Joe, The check is in the mail for referral
I would love to discuss a 4.10 gear upgrade for your hot rod. You can contact us at 954-984-8040 9-6 M-F. Our shop car has the 4.10s in it. I just love those 1.50 60'
I look forward in having the opportunity to earn your business.
Jeremy Preston
www.myspace.com/horsepowersales
www.hpsalesflorida.com
Joe, The check is in the mail for referral
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 266
From: St. Louis, MO
St. Jude Donor '08
Here is where I get my information.
http://www.xse.com/leres/ss/calculator.html
Pan down and select your transmission type. Plug in your rev limiter (I keep mine at 6700 on stock bottom end). Plug in tire height (MT drag radials are 25.5 mounted) and hit calculate.
123 for 4.10's and 130 for 3.90's at 6700 in 4th gear.
I bet guys in 10's with 4.10's at are using taller MT bias plys that are much taller. Tire height makes a big difference.
This guy is planning on NOS too. So choose your tires and gears carefully.
Note it you go bias ply MTs you need bias ply fronts or it will be real squirlley on the big end. Experience talking here. CCW drag pack rims are real pricey, be forewarned. And you can't safely drive to the track on them in rainy S. Fla. Drag radials are ok to drive on but watch for standing water.
Jeremy, happy to help! Gotta support our Corvette Challenge family members!
http://www.xse.com/leres/ss/calculator.html
Pan down and select your transmission type. Plug in your rev limiter (I keep mine at 6700 on stock bottom end). Plug in tire height (MT drag radials are 25.5 mounted) and hit calculate.
123 for 4.10's and 130 for 3.90's at 6700 in 4th gear.
I bet guys in 10's with 4.10's at are using taller MT bias plys that are much taller. Tire height makes a big difference.
This guy is planning on NOS too. So choose your tires and gears carefully.
Note it you go bias ply MTs you need bias ply fronts or it will be real squirlley on the big end. Experience talking here. CCW drag pack rims are real pricey, be forewarned. And you can't safely drive to the track on them in rainy S. Fla. Drag radials are ok to drive on but watch for standing water.
Jeremy, happy to help! Gotta support our Corvette Challenge family members!
5th Gear
Joined: Aug 2007
Posts: 5
Likes: 0
4.10 and street sense
4.10's on my SC 05 Mustang GT left first gear basically unusable for street driving! Will 4.10's do the same thing to my 07 C6? I dont want to SC the Vette, just want some more low end grunt for the street!
Im in Cal. Chevy performance shops arent as plentiful as Ford? Any good shops in So.Cal for gears etc? Thanks!
Im in Cal. Chevy performance shops arent as plentiful as Ford? Any good shops in So.Cal for gears etc? Thanks!
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4.10's top out at 130 with heads and cam since the rev limiter is moved up. You can hit a 10.6 with 4.10's and there arent any head cam cars doing that so the 3.90's are best reserved for the road race guys or those with a 1/4 mile ET lower than 10.5. The fastest H/C car I've seen is 10.8x and that is definitely a 4.10 eligable car.
As far as where to get the diff from, go to a tuner/installer and have them get the diff for you from the source they use. If there is an issue and you have a bad unit, no installer is going to eat the cost of removing the diff and returning it for you for free for the replacement diff. If the installer got the unit for you, its his issue.
As far as where to get the diff from, go to a tuner/installer and have them get the diff for you from the source they use. If there is an issue and you have a bad unit, no installer is going to eat the cost of removing the diff and returning it for you for free for the replacement diff. If the installer got the unit for you, its his issue.
Plus, You can always upgrade your valvetrain when you do a H/C and spin to 7500, which will allow you top out at 149mph and into the single digits. Come back and share your experience with us when that is your limiting factor.
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Here is where I get my information.
http://www.xse.com/leres/ss/calculator.html
Pan down and select your transmission type. Plug in your rev limiter (I keep mine at 6700 on stock bottom end). Plug in tire height (MT drag radials are 25.5 mounted) and hit calculate.
123 for 4.10's and 130 for 3.90's at 6700 in 4th gear.
I bet guys in 10's with 4.10's at are using taller MT bias plys that are much taller. Tire height makes a big difference.
This guy is planning on NOS too. So choose your tires and gears carefully.
Note it you go bias ply MTs you need bias ply fronts or it will be real squirlley on the big end. Experience talking here. CCW drag pack rims are real pricey, be forewarned. And you can't safely drive to the track on them in rainy S. Fla. Drag radials are ok to drive on but watch for standing water.
Jeremy, happy to help! Gotta support our Corvette Challenge family members!
http://www.xse.com/leres/ss/calculator.html
Pan down and select your transmission type. Plug in your rev limiter (I keep mine at 6700 on stock bottom end). Plug in tire height (MT drag radials are 25.5 mounted) and hit calculate.
123 for 4.10's and 130 for 3.90's at 6700 in 4th gear.
I bet guys in 10's with 4.10's at are using taller MT bias plys that are much taller. Tire height makes a big difference.
This guy is planning on NOS too. So choose your tires and gears carefully.
Note it you go bias ply MTs you need bias ply fronts or it will be real squirlley on the big end. Experience talking here. CCW drag pack rims are real pricey, be forewarned. And you can't safely drive to the track on them in rainy S. Fla. Drag radials are ok to drive on but watch for standing water.
Jeremy, happy to help! Gotta support our Corvette Challenge family members!
Cartek is the source of my info and they have seen 10.6 with 130+ mph on 4.10's. This guy is not going further than that level of modding and therefore will not need the gearing for a faster trap speed. If he was to go with a forged motor then the rev limit can be 7200-7500 depending on what you build. Where is his mod list going to end?
Your choice of a 6700 rev limiter is also in the minority. The safety of your limiter is your choice and most aftermarket head cam installs go higher. I have no issue with a 6900 limit in the last gear especially for a cam with a high power band. You chose the tire and rev limit for your application and having done so you proved only that for you, 3.90's are the way to go. For the guy not ever seeing the power levels to attain a 123mph pass or not ever drag racing, the gear set really should be based on how much gain from gears he wants. For a street driven car with heads and cam, with mid elevens being the norm, a 4.10choice is best.
Last edited by SpinMonster; Aug 26, 2007 at 12:02 AM.
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Thats about what I see but Joe is pointing out that using a short tire rather than a 26.9" street tire will not get there. Drag radials are 26.2" but arent the optimum choice on a prepped track.
Last edited by SpinMonster; Aug 26, 2007 at 05:41 AM.
Thread Starter
Pro
Joined: Mar 2007
Posts: 585
Likes: 0
From: Coral Springs Florida
4.10's top out at 130 with heads and cam since the rev limiter is moved up. You can hit a 10.6 with 4.10's and there arent any head cam cars doing that so the 3.90's are best reserved for the road race guys or those with a 1/4 mile ET lower than 10.5. The fastest H/C car I've seen is 10.8x and that is definitely a 4.10 eligable car.
As far as where to get the diff from, go to a tuner/installer and have them get the diff for you from the source they use. If there is an issue and you have a bad unit, no installer is going to eat the cost of removing the diff and returning it for you for free for the replacement diff. If the installer got the unit for you, its his issue.
As far as where to get the diff from, go to a tuner/installer and have them get the diff for you from the source they use. If there is an issue and you have a bad unit, no installer is going to eat the cost of removing the diff and returning it for you for free for the replacement diff. If the installer got the unit for you, its his issue.
Thread Starter
Pro
Joined: Mar 2007
Posts: 585
Likes: 0
From: Coral Springs Florida
Hey Z06 Fan,
I would love to discuss a 4.10 gear upgrade for your hot rod. You can contact us at 954-984-8040 9-6 M-F. Our shop car has the 4.10s in it. I just love those 1.50 60'
I look forward in having the opportunity to earn your business.
Jeremy Preston
www.myspace.com/horsepowersales
www.hpsalesflorida.com
Joe, The check is in the mail for referral
I would love to discuss a 4.10 gear upgrade for your hot rod. You can contact us at 954-984-8040 9-6 M-F. Our shop car has the 4.10s in it. I just love those 1.50 60'
I look forward in having the opportunity to earn your business.
Jeremy Preston
www.myspace.com/horsepowersales
www.hpsalesflorida.com
Joe, The check is in the mail for referral
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 266
From: St. Louis, MO
St. Jude Donor '08
Better call Jeremy - don't believe Roger's in the shop for a few days.
Jeremy will be able to square you away - he's got more miles logged, a quarter mile at a time, than many drivers!
One of the reasons I like HPS - they use what they sell and test it on the track.
Jeremy will be able to square you away - he's got more miles logged, a quarter mile at a time, than many drivers!
One of the reasons I like HPS - they use what they sell and test it on the track.