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Open Track Racing
BEST DIFFERENTIAL FOR OPEN TRACK/OCCASSION DRAG
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<blockquote data-quote="Coz" data-source="post: 16011097" data-attributes="member: 184704"><p>If you were just driving on the street and going to the dragstrip then even a 4.10 would work. But a 4.10 on the rosd course would not work too well. Plus, with all your torque plus 4.10's I would suspect it would get squirley powering out of a turn. 3.73's may be a handful too. When you go to the track with your 3.31's take note of how it handles in the turns. Assuming you have fecede tires, If your ass end kicks out a lot on you then 3.73s are probably going to make it worse. </p><p></p><p>If the road course has a lot of long straights, you will run out of RPM in 4th gear. </p><p></p><p>Conversely, if it has a lot of tight turns, all your torque may work against you with respect to maintaining traction.</p><p></p><p>Your Torsen is ok for an occasional stint at the strip but, the stress on the Torsen will also be affected by the tires you run. Radial slicks will be the toughest. Bias ply with softer sidewalls will be easier. Drag radials will be tougher than max or extreme summer tires.</p><p></p><p>A clutch-based Ford Trac-Lok diff can handle more abuse than a Torsen and can be rebuilt. But you definitely don't want that on a road course with 700+ HP!</p><p></p><p>Some people speak highly of the Eaton Tru-Trac differential but I don't have ant experience with it.</p><p></p><p>Forgot to mention that stock GT500s have been known to heat soak on a road course. Running E85 may help mitigate that problem. Bring extra fuel since i don't know too many road course tracks that sell E85. You may only get two 20-minute sessions on a tank of E85.</p><p></p><p>Everything has it's tradeoffs...</p></blockquote><p></p>
[QUOTE="Coz, post: 16011097, member: 184704"] If you were just driving on the street and going to the dragstrip then even a 4.10 would work. But a 4.10 on the rosd course would not work too well. Plus, with all your torque plus 4.10's I would suspect it would get squirley powering out of a turn. 3.73's may be a handful too. When you go to the track with your 3.31's take note of how it handles in the turns. Assuming you have fecede tires, If your ass end kicks out a lot on you then 3.73s are probably going to make it worse. If the road course has a lot of long straights, you will run out of RPM in 4th gear. Conversely, if it has a lot of tight turns, all your torque may work against you with respect to maintaining traction. Your Torsen is ok for an occasional stint at the strip but, the stress on the Torsen will also be affected by the tires you run. Radial slicks will be the toughest. Bias ply with softer sidewalls will be easier. Drag radials will be tougher than max or extreme summer tires. A clutch-based Ford Trac-Lok diff can handle more abuse than a Torsen and can be rebuilt. But you definitely don't want that on a road course with 700+ HP! Some people speak highly of the Eaton Tru-Trac differential but I don't have ant experience with it. Forgot to mention that stock GT500s have been known to heat soak on a road course. Running E85 may help mitigate that problem. Bring extra fuel since i don't know too many road course tracks that sell E85. You may only get two 20-minute sessions on a tank of E85. Everything has it's tradeoffs... [/QUOTE]
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BEST DIFFERENTIAL FOR OPEN TRACK/OCCASSION DRAG
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