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3.90s? Perfect gear or no?

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Old 04-05-2006, 08:20 PM
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Default 3.90s? Perfect gear or no?
Well my 4.10s are howling like a bitch and on their last leg so Im in the market for new gears. I was looking around and saw that Motive has started making 3.90s for the 7.5". These seem like they could be the perfect gear. More pickup than 3.73s, better gas mileage than 4.10s, less teeth so maybe stronger than 4.10s, etc. Are these as ideal as they seem or are there issues I have missed? Thanks guys!
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Old 04-05-2006, 09:42 PM
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Nobody has any input or experience?
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Old 04-06-2006, 05:45 PM
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Let me know when you find them my fourth set of gears (4.10's) is whining like my wife again.
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Old 04-06-2006, 09:53 PM
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i have them in a 9" and love them.. i dont think many people have the 3.90's in a 7.5" i just found out they made them.
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Old 04-07-2006, 06:36 AM
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I changed my 4.10 to 3.90 in my old school, there was hardly any difference. Maybe 200 - 300 rpm on the road.
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Old 04-07-2006, 08:11 AM
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I love the 3.90's in my 12 bolt. I like them because they are not quite as extreme as a 4.10, but still make you run through the gears quickly.
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Old 04-07-2006, 08:26 AM
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kelly, have u made it to thr track w/ the 3.90's yet??
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Old 04-23-2006, 09:56 PM
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bump ....
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Old 04-23-2006, 10:38 PM
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Yeah I have but I don't have any good times to post yet.
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Old 04-23-2006, 10:44 PM
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were did you get the gears, and how much were they?
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Old 04-23-2006, 10:47 PM
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They're in my 12 bolt, included in the $2k price tag.
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Old 04-24-2006, 12:11 AM
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Originally Posted by keliente
They're in my 12 bolt, included in the $2k price tag.
Preach it sister...
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Old 04-25-2006, 11:05 PM
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does anyone know where to get 3.90s at??
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Old 04-26-2006, 07:02 AM
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Thunder has them for the 10 bolt by motive.
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Old 04-26-2006, 09:46 AM
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Wow thats cool 3.90s, I would of gone 3.90s if I knew they existed. But then again I have no complaints on the 3.73s rite now. I can still shift pretty fast thru the gears. **** before I know it Im constantly in 5th round town now.!
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Old 04-26-2006, 01:21 PM
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sweet, but what about 12 bolts?
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