4.10 gearing
Thread Starter
Intermediate
Joined: Dec 2006
Posts: 46
Likes: 0
From: Phoenix AZ
4.10 gearing
I am thinking that 4.10 for a Z51 with manual 6 speed is the best bang for the buck for SOTP. What is a good deal to have this done by a shop and how have others liked it? Also do they have to reprogram the computer so that the speedometer is not off? THanks for the info
Drifting
Joined: Jan 2005
Posts: 1,827
Likes: 301
From: Tucson Arizona
St. Jude Donor '08
Did my 4:10's at Extreme Motorsports in Tempe. They are a DTE dealer. The total price will depend on which unit you buy. No re-tune neccessary. Extreme charges $400 for the install. I do not have the Z-51 tranny, but I am very happy with this install.
Burning Brakes
Joined: Jan 2005
Posts: 1,027
Likes: 2
From: Baltimore MD
St. Jude Donor '08
I have a Z51 also and am about to order 4.10's. My only question today is where I'm ordering them. Search through a couple pages here...this topic has been beat to death. I was about to dump $1500 or so on long tube headers and high flow cats when I found the 4.10 option. I put together a spreadsheet of my RPM/MPH with the different gearing and its a no brainer!
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
In second gear at 5800 people find a false rev limiter that is programmed out on the fuel cut off section in hptuners. On the threshold tab there is a 500 in the last box that needs to be set to zero to eliminate this. I have had to do this for 4 people in addition to myself and there have been numerous posts on the topic. All of those cars were Z51's. If you take you car up to 5800 (+/-) in second gear and it acts as if it has a rev limiter set there, then you will know you need it. On a friends 403 it was in the 3k's.
A small tune is therefore needed for the issue to be resolved.
A small tune is therefore needed for the issue to be resolved.
