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JP,
I just rebuilt my Jag rear end. I pulled out the worn and noisy 3.31 gears and put new Dana 3.73s in. The 3.31 is a great cruising gear and gives great gas mileage. My 356 ci engine like to rev and the new lower rear gears gets me to 100 in 9 seconds, it's great!
But the primary reason for my choice is creeping up the 405 freeway in rush hour. I can idle in first gear at 5 mph, perfect! I use the .68 fifth gear a LOT more now, even cruising at 60. It should turn 3,000 rpm at 100 mph with 26.9 inch 275/60/15 Toyo tires. But, I haven't had a chance to try this yet. The acceleration is stronger and the gas mileage is a bit worse.
I am looking forward to my next high speed cruise (100+) when I find out what that's like. I have a feeling I should have gone for the 3.54 gears for that. Otherwise, the 3.73 is a great gear with the Tremec 3550 and an engine that likes 7,000 rpm.
Paul
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"It doesn't have anything on it that doesn't make it go faster."
Last edited by RallySnake; 03-08-2005 at 06:41 PM..
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