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Bill Grubbs · 03-27-2010, 08:21 PM

The only downside to a T350 (besides the rotating mass) is whenever first gear is under power, second gear is turning the incorrect direction (ie in reverse). Therefore when the 1-2 shift is made second gear must stop rotating and reverse direction (to the forward direction). A secondary impact to this is when in first gear over a certian RPM (6XXX +, each one is different) the second gear clutches will start to drag, and when they are rotating in the opposite direction it has a tendancy to kill ET.

With all that being said, the reverse rotation, the stop, and the sudden forward acceleration of second gear could have negative consequences to the durability of a T350 trans it is consistantly over-reved. However most racers I know use 1st gear only to get the car moving and shift to 2nd very early.

It has also been our experience that shifting 1-2 early does not negatively affect ET to the same extend shifting late does.

I hope I got that all right.

03-27-2010, 08:21 PM	#19
Bill Grubbs Member Join Date: Oct 2002 Location: Magnolia, Texas Posts: 416 Likes: 3 Liked 564 Times in 66 Posts	Re: Turbo 250 or 350 The only downside to a T350 (besides the rotating mass) is whenever first gear is under power, second gear is turning the incorrect direction (ie in reverse). Therefore when the 1-2 shift is made second gear must stop rotating and reverse direction (to the forward direction). A secondary impact to this is when in first gear over a certian RPM (6XXX +, each one is different) the second gear clutches will start to drag, and when they are rotating in the opposite direction it has a tendancy to kill ET. With all that being said, the reverse rotation, the stop, and the sudden forward acceleration of second gear could have negative consequences to the durability of a T350 trans it is consistantly over-reved. However most racers I know use 1st gear only to get the car moving and shift to 2nd very early. It has also been our experience that shifting 1-2 early does not negatively affect ET to the same extend shifting late does. I hope I got that all right.