ba390 Member 8 Member For: 16y 9m 9d Location: Cairns Qld Posted 06/03/08 08:36 AM Share Posted 06/03/08 08:36 AM Hi all just a quick question have a ba xr6t making about 357kw with the 4 speed auto and std diff gears. Took it to the drags and ran 121mph but at only 12.50 am looking at a stall but I have a set of 4:11 gears does anyone have these in and what did it do to the driveability as I drive this quite regularly. Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 28d Gender: Male Location: Perth Posted 06/03/08 01:20 PM Share Posted 06/03/08 01:20 PM Hi all just a quick question have a ba xr6t making about 357kw with the 4 speed auto and std diff gears. Took it to the drags and ran 121mph but at only 12.50 am looking at a stall but I have a set of 4:11 gears does anyone have these in and what did it do to the driveability as I drive this quite regularly.I think 4.11 is a good choice for a 4 speed auto as 2.39 1st gear with 4.11 equals 9.82 and a manual 6 speed 2.66 with 3.73 equals 9.92 so nearly identical. This change will defiantly help your launch and reduce your 60 foot time. Link to comment Share on other sites More sharing options...
ba390 Member 8 Member For: 16y 9m 9d Location: Cairns Qld Posted 07/03/08 06:38 AM Author Share Posted 07/03/08 06:38 AM I think 4.11 is a good choice for a 4 speed auto as 2.39 1st gear with 4.11 equals 9.82 and a manual 6 speed 2.66 with 3.73 equals 9.92 so nearly identical. This change will defiantly help your launch and reduce your 60 foot time.I should help the sixt foot heaps but just not sure what it will do with the change in rpm at 100 have a four hour drive to the track from here. Link to comment Share on other sites More sharing options...
XR06T Silver Donating Members 4,146 Member For: 19y 5m 1d Gender: Male Posted 07/03/08 06:42 AM Share Posted 07/03/08 06:42 AM from 3.45 to 4.11 is a 20% increase. whatever your rpm at cruising speed (say 2k @ 100pkh) will be increased by 20% (2400 rpm for 100kph), at a rough guess. Link to comment Share on other sites More sharing options...
ba390 Member 8 Member For: 16y 9m 9d Location: Cairns Qld Posted 07/03/08 07:17 AM Author Share Posted 07/03/08 07:17 AM from 3.45 to 4.11 is a 20% increase. whatever your rpm at cruising speed (say 2k @ 100pkh) will be increased by 20% (2400 rpm for 100kph), at a rough guess.Thanks guys just trying to decide whether to put the gears in first or buy a stall and try it. Link to comment Share on other sites More sharing options...
CV PERFORMANCE Senior Member Member 139 Member For: 18y 3m 13d Gender: Male Location: Caringbah 9526-5322 Posted 07/03/08 07:24 AM Share Posted 07/03/08 07:24 AM Buy a stallie and leave the ratio's as they areCV PERFORMANCE Link to comment Share on other sites More sharing options...
DUS12 Member 471 Member For: 17y 4m 19d Posted 19/03/08 02:22 AM Share Posted 19/03/08 02:22 AM I had 3.73 in mine when I was manual when I put the auto in I went back to 3.23 its only a 3 speed but Link to comment Share on other sites More sharing options...
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