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Thread: 4.10 or 3.91?
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09-28-2005, 04:45 PM #1formulabird06Guest
4.10 or 3.91?
what would be better for a firebird with a 305? im about to put an 89 trans am rear end on and havent really made up my mind on gearing? any suggestions?
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09-28-2005, 05:16 PM #2
- Join Date
- Aug 2005
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- Yardley, PA
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Black- 2001 Camaro SS
depends on current/future mods, what you are looking for. What are you trying to do with the car? Daily Driver? What trans? Ratios?. Sorry, not enough info to make a recommendation
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09-30-2005, 04:58 PM #3formulabird06Guest
3.91 or 4.10
it has a 350 transie and hope to stroke it out to a 383. it will pretty much be a daily driver when weather is nice.
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10-04-2005, 08:44 AM #4
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- Aug 2005
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- Blairsville, GA
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- 47
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- 215
Red- 2000 T/A WS6
If you're runnin a TH-350 trans, then you're gonna want about a 3.55 at the lowest, considering those aren't overdrive units. You'll tach over 3000 rpm at 60 with 3.91s, more still with 4.10s.
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