should i get 4.10 gears for my 98 auto firebird. I know that people have complained about spinning alot with 3.73 gears but most were also sticks. I was just wondering since mine is an auto if i should go with 4.10? [img]graemlins/thumbsup.gif[/img] [img]graemlins/omg.gif[/img]
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4.10 gears for 3.8
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If you have a way to reprogram for it, and don't drive on the highway much- then I'd say go for it.AIM: escalier deverre<br />\'02 Pearl Blue Metallic RSX-S (daily driver)<br />\'98 Black Firebird<br />98 V6 turbocharged to 02 LS1 swap<br />\'02 LS1/4L60E<br />LS6 Block, LS6 Intake Manifold, Thunder Racing 215/220 .600/.523/115 Cam, Titanium Retainers, Crane Double Valve Springs, 125 shot NX Wet Kit w/ NOS brand Purge, True Dual \"H\" Pipe w/ two chambers and dumps, 17x11(rear) and 17x9.5(front) Black Powdercoated ZR1 Replicas on 315 and 275 BFGoodrich Comp T/A\'s (Street)/ET Drags/Skinnies on Weldlites(Track), 3.42/LSD
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u'll be hangin at about 3000 rpm on the highway w/ 4.10's. if yareally wanna go w/ those, i'd suggest u get taller rims/tires also. maybe 275-40-18 or 295-40-18's to help keep traction, get wider tires on it, and keep the highway rpm's down around 2500-2700.2001 Arctic White Firebird<br />More mods than I\'m allowed to list!
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3.73s DON'T spin alot! I'm looking at 4.10 gears also because my 3.73s aren't all that great. My only worry is high RPMs on the highway. I have a speedo indicated 92mph @ 2500rpms now which is around 70-75mph but I don't want to go any higher than 3000rpms at 70mph since I do a fair amount of highway driving. 3.73s were a HUGE improvement over the stock 3.08s but I need more. I suppose there is no way in hell you can reprogram the speedo with 4.10s, but thats no biggie.<br /><br /> <a href=\"http://www.cardomain.com/id/nitroxxx28\" target=\"_blank\">http://www.cardomain.com/id/nitroxxx28</a>
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If you do a lot of highway driving, don't go with 4.10s. 3000 rpm absolutely drones if you have exhaust. Generally I try to shift below 3k or right at it in traffic. Cruising at that rpm can't be good for the engine/drivetrain, or the gas mileage.-Eric<br />2002 Navy Blue Camaro...Striped and Stalled. 35th Anniversary SS wheels <br />Best ET: 15.384 @ 88.32 on street tires<br />Project Whitney: Goal, 14.0 1/4 by summer 2008.
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