Gears for procharged 6m

csb85

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Currently I have 3.73 gears, They were great when I was n/a but now with the blower they are a little too much. Went to the track today car went a best of 11.89 @ 122( on stock 255 pirelli's) and I think shifting into 5th was killing my time a little. Trying to decide what gears to get 3.55, 3.31, 3.27 ?
 

burnin4

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Currently I have 3.73 gears, They were great when I was n/a but now with the blower they are a little too much. Went to the track today car went a best of 11.89 @ 122( on stock 255 pirelli's) and I think shifting into 5th was killing my time a little. Trying to decide what gears to get 3.55, 3.31, 3.27 ?

Depends...

If you are concerned with drag strip results then I would keep your 3.73's, install a Boss intake manifold, stretch the rpms to 7500. 4th gear = 127mph. You are only trapping 122 now, plenty of room to grow. If you like to roll race then go with 3.31's or 3.55's.

Use this to help make some calculations Gear Ratio Speed Calculator
 

SaleenGT2001

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I had 3.73 and went with 3.55's and i like it a lot better. I just play on the street though
 

2k3Mach

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Crazy.. used to be everyone swapping out lower gears for 3.73's & 4.10's... now other way around? I know my N/A GT gets to the top of the Rpms pretty quick with the 3.31's - not sure if I could even find the traction on 3.73's!

Sent from my MB860 using Tapatalk 2
 

xxbmxlsxx

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i trapped 133 with 355s. was in 4th. clutch was stock still so im wondering now with the twin disc if ill top out 4th since it feels faster. 331s obviously would be next choice but im hoping to stick with 355
 

csb85

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With all that done to the car why the hell are you still on 255s?? That would be my first concern instead of a gear change.
Lol, I'll be addressing that issue soon plan on getting forgestar f14's 20x9 and 20x11 with 315's in the rear and then running a stiff sidewall bias ply slick at the track.
 

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