Need help for picking 373's or 410's
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Registered User
Joined: Jun 2004
Posts: 62
From: Wisconsin
Need help for picking 373's or 410's
I have a 95 z28 and am changing out the stock ring and pinion.. I need to know what the rpms would be at around 80 mph with the 373's vs. the 410's. I don't drive highway much and the car is for the weekends but I will drive some highway for school.. Car has alot done including cam,heads,intake,headers,powerdyne supercharger 4.5, MSD Ignition.exc....
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Joined: Sep 2002
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Thread Starter
Registered User
Joined: Jun 2004
Posts: 62
From: Wisconsin
Re: Need help for picking 373's or 410's
It has the 6spd in it.. but I am worried about the going on the freeway with 410's anyone know what kind of rpms I will be turning at like 80 or 90 mph with 410's vs 373's.. It has 275 40r 17's tires on it... thanks, Also what would my quarter mile look like if I picked one over the other..
Thread Starter
Registered User
Joined: Jun 2004
Posts: 62
From: Wisconsin
Re: Need help for picking 373's or 410's
Also how do i know what carrier I have in the car.. All I know is that the gears where changed to 342's and made by richmond.. It is a 95 z28 lt1... thanks,
Registered User
Joined: Feb 2000
Posts: 634
From: Pikeville, KY USA
Re: Need help for picking 373's or 410's
With a 6 speed go with the 4.10's, a buddy of mine switched to them and it made a huge difference. I don't think you would have trouble driving everyday because you have 6th gear to go tt so the rpms won't be very high.
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Joined: Jan 2002
Posts: 5,308
From: Oshawa - Home of the 5th-gen
Re: Need help for picking 373's or 410's
With a 6-speed, I bet you wouldn't even notice a difference in mileage whatsoever
. Even my A4 w/4.10's can get 250 miles to a tank on the highway, and the best I ever got with 2.73's on the highway was only 310. That's only 60 miles less, and that's a BIG gear difference!
4.10's with ~26" tires (which most factory 4th-gen cars have) and ~6000 - 6500 redline is perfect for 1/4 mile racing IMO
. Use that gear chart posted above and see!
. Even my A4 w/4.10's can get 250 miles to a tank on the highway, and the best I ever got with 2.73's on the highway was only 310. That's only 60 miles less, and that's a BIG gear difference!4.10's with ~26" tires (which most factory 4th-gen cars have) and ~6000 - 6500 redline is perfect for 1/4 mile racing IMO
. Use that gear chart posted above and see!
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Joined: May 2001
Posts: 1,122
From: Memphis, TN, USA
Re: Need help for picking 373's or 410's
With my 2001 WS6, 80 MPH with 4.11 rear = 2,100 RPM. MPG for city driving remained unchanged from the 3.42 stock gear. City nets me about 18 MPG. Highway milage dropped slighly, but not enough to make me wish I hadn't gone with the 4.11
1/4 mile for me, I trap at 108 and the shift light comes on at 6,000 RPM just as I cross the line, so I've still got more rooom before I hit the rev limiter.
Go with the 4.10 / 4.11 ... you won't be sorry.
1/4 mile for me, I trap at 108 and the shift light comes on at 6,000 RPM just as I cross the line, so I've still got more rooom before I hit the rev limiter.
Go with the 4.10 / 4.11 ... you won't be sorry.
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