Automatic ? 3.31 vs Aluminum Driveshaft
Which would be more noticeable on an automatic switching from the factory 3.15s to 3.31s or an aluminum drive shaft ? I know both are small gains.
Having that high ratio first gear might make the swich to 3.31s noticable in first gear ? yes/no ? |
The driveshaft is a lot of money for something you really won't benefit from. It's a good safety feature for the manual cars when dumping the clutch but for an auto to me is a waste of money. You will definitely notice the 3.31's. Not a lot but some.
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I'd do 3.55 Gears with the auto if your going to the expense of a gear change. You can probably buy and pay someone to install the gears for you for the same cost of a drive shaft and you'll get a lot more out of the gears.
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3.55
3.55 Ratio seems a little steep. 4.17 first gear ratio, 3.31 final ratio. Is like a manual with 3.73 rear gears. Ill be ordering my 3.31 gears sometime soon, hopefully have them installed this season.
3.66x3.31= 12.1146 3.66x3.55= 12.993 3.66x3.73= 13.6518 3.66x3.90= 14.274 3.66x4.10= 15.006 4.17x3.15= 13.1355 4.17x3.31= 13.8027 4.17x3.55= 14.8035 |
It is to steep. You made the right decision.
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gears ordered
gears,install kit, pinion bearing and traction lok kit all ordered. Ill post an update once, installed. Probably at least a month away from install.
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Originally Posted by Shane780
(Post 8491505)
3.55 Ratio seems a little steep. 4.17 first gear ratio, 3.31 final ratio. Is like a manual with 3.73 rear gears. Ill be ordering my 3.31 gears sometime soon, hopefully have them installed this season.
3.66x3.31= 12.1146 3.66x3.55= 12.993 3.66x3.73= 13.6518 3.66x3.90= 14.274 3.66x4.10= 15.006 4.17x3.15= 13.1355 4.17x3.31= 13.8027 4.17x3.55= 14.8035 |
3.73 performance package
"Ford puts a 3.73 gear in the manual performance pack for a reason, but whatever"
automatic with 3.31s is like a manual with 3.73s in first gear. 3.55s is like 4.10s, too steep in my opinion. |
It your money bro. Hope there everything you hope they'll be.
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hopes
Im hoping they will be like the difference between a manual gt with 3.55s and one with 3.73s. The math suggests it should be so at least for first gear.
3.66x3.31= 12.1146 3.66x3.55= 12.993 (3.66x3.73= 13.6518) 3.66x3.90= 14.274 3.66x4.10= 15.006 4.17x3.15= 13.1355 (4.17x3.31= 13.8027) 4.17x3.55= 14.8035 |
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