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11-22-2005, 05:32 AM
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#1
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Join Date: Nov 2005
Location: Pitman, NJ
Posts: 178
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need your opinion...
i have a 350 HO TBI with a t-5. i want to get gears in the rear and im thinkin 3.55's but do u think 3.73's would be too much? its a summer car and most of it will be highway driving, to wildwood and back. what do u think? please help
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11-22-2005, 07:24 AM
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#2
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Sliderule / Moderator
Join Date: Oct 2004
Location: Catawissa PA
Posts: 2,294
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My 84 had the 305HO T5 with 3:73 and it was great combination. The only down side was that I had edelbrock headers, gutted cat and the flowmaster cat back. So above 70MPH on long hauls the drone in the car made me insane! ( yah it was too loud - but I'm OLD!) could have done a muffler change, but I loved the sound when cruising around town!
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93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
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11-22-2005, 03:52 PM
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#3
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NJFBOA Co-Founder
Join Date: Jul 2004
Location: All up in your kool aid!
Posts: 12,235
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you woudl see a little bit of a performance gain with the 3.73's and only cruise about 150rpm higher on the highway.
i woudl go for the 3.73's, actually i would go for 4.10's 
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11-22-2005, 05:59 PM
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#4
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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What gears do you have now? And just so we are clear, you do have a 10 bolt and not a 9 bolt rear, right?
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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11-23-2005, 04:20 AM
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#5
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Join Date: Nov 2005
Location: Pitman, NJ
Posts: 178
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it has a stock rear for a 91 305 tbi automatic, but the car has a 350 HO tbi 5-speed in it now, but i dont want to be sitting at high rpms on the highway, well not too high...but i want the car to be quick, so a happy medium would be nice
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11-23-2005, 11:36 AM
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#6
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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Well you probably have 2.73s....but you would have to check the RPO codes under the lid of your glovebox to be sure:
GU1 : AXLE REAR, 2.41 RATIO
GU2 : AXLE REAR, 2.73 RATIO
GU4 : AXLE REAR, 3.08 RATIO
GU5 : AXLE REAR, 3.23 RATIO
GU6 : AXLE REAR, 3.42 RATIO
GT4 : AXLE REAR, 3.73 RATIO
GT5 : AXLE REAR, 4.10 RATIO
The 2.41 and 4.10 ratios were not available in thirdgens, but I included them for junkyarding purposes.
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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11-23-2005, 05:06 PM
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#7
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NJFBOA Co-Founder
Join Date: Jul 2004
Location: All up in your kool aid!
Posts: 12,235
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at highway speeds the difference between 3.73's and 4.10's is only 250-300rpm. that really isn't much at all.
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11-23-2005, 05:20 PM
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#8
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Join Date: Oct 2004
Posts: 365
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i sent you a pm about the rear i have up for grabs
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AIM: blacktoprecs
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