Whats OD?
#2
Last edited by poorhousenext; 02-24-2011 at 09:49 AM.
#3
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Assuming you're asking about automatics,our 4L60Es' have 4 gear ratios,
not including torque convertor 'slippage/stall/efficiency
-1st,3.06:1 ratio-engine turns 3.06 times to provide 1 output turn to the driveshaft
-2nd,1.62:1 ratio-engine turns 1.62 times to provide 1 output turn to the driveshaft
-3rd (D),1:1 ratio-every engine rotation results in 1 driveshaft rotation
-4th (OD), .70:1 ratio,engine has to spin only 7/10 of a rotation to produce 1 driveshaft rotation
also torque convertor lockup occurs when torque demand is low enough(computor controlled) to provide a 1:1 ratio thru the convertor.
not including torque convertor 'slippage/stall/efficiency
-1st,3.06:1 ratio-engine turns 3.06 times to provide 1 output turn to the driveshaft
-2nd,1.62:1 ratio-engine turns 1.62 times to provide 1 output turn to the driveshaft
-3rd (D),1:1 ratio-every engine rotation results in 1 driveshaft rotation
-4th (OD), .70:1 ratio,engine has to spin only 7/10 of a rotation to produce 1 driveshaft rotation
also torque convertor lockup occurs when torque demand is low enough(computor controlled) to provide a 1:1 ratio thru the convertor.
#4
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ahh i see i thought drive gave all 4 gears while OD did something more lol
im new to automatics, this is my first auto Z28
If highway racing starting at a 40mph roll, would it be better to keep the car in Drive or Over Drive?
im new to automatics, this is my first auto Z28
If highway racing starting at a 40mph roll, would it be better to keep the car in Drive or Over Drive?