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Didn't you say the 3208 is in a truck youown?
If so, why not swap out the running gear including the rear end?
Your 3208 will have enough torque to get you up to speed with a tall rear end. To calculate the engine speed at a given road speed you need to know how revolutions per mile your tires are turning and the drive axle ratio. Since 1 mile per minute equals 60 miles per hour all you have to do is multiple the revolutions per mile by the drive axle ratio to get the number of revolutions per mile the engine will turn......and this will be in revolutions per minute since it takes 1 minute to go 1 mile. The automatic will have some slippage in the torque converter so add about 10% to the engine speed number and you will be in the ball park somewhere near home plate.
For us, with an 8.2DD, 2200 equals actual 60 mph. Using the above method without the fudge factor at the end we get 2070 theoretical rpm. The torque converter slippage is about 130 rpm. Our tires are rated at 504 revs per mile and teh drive axle ratio is 4.11.
Hope this helps.
john the busboy |
RV and bus conversion info since 1996.
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