What's the best diff gears to run?
Thread Starter
8th Gear
Joined: Sep 2005
Posts: 8
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What's the best diff gears to run?
I'm running 273 diff and would like more quickness off the line but want to keep good gas mileage on the highway. I've even thought about a programer but don't know if that would help as much as changing diff. Trying to decide between 315 or 342. Any suggestions? The only other mod is I have a dual cone air breather.
Thanks
Thanks
Supporting Tuner
Joined: Sep 2004
Posts: 51,896
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From: ================== Houston, Texas www.englandgreen.com ================== Necessary Evil™ __________
CI 6-7-8-9-10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14
What is your driving style? What other performance mods are you doing to do in the future? What is your highest priority - gas mileage or performance?
Most people will tell you that the 3.15:1 is not worth the cost and effort, and I agree. Start with the 3.42:1 gears, IMHO.
Most people will tell you that the 3.15:1 is not worth the cost and effort, and I agree. Start with the 3.42:1 gears, IMHO.
Le Mans Master
Joined: Dec 2003
Posts: 5,622
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From: Savannah Georgia
Cruise-In VIII Veteran
Originally Posted by EnglandGreen
What is your driving style? What other performance mods are you doing to do in the future? What is your highest priority - gas mileage or performance?
Most people will tell you that the 3.15:1 is not worth the cost and effort, and I agree. Start with the 3.42:1 gears, IMHO.
Most people will tell you that the 3.15:1 is not worth the cost and effort, and I agree. Start with the 3.42:1 gears, IMHO.
3:42 is prolly what you want. I went with the 3:73, but my car came with 3:15 and I wanted more than 3:42. My around town mileage went down cause I'm also in the gas ( until I reach the speed limit) 
but my Highway only went down a mile or 2 per gallon 
