I wouldnt be worried with running 33s and 5.13s. Common gear to tire is 3.73s and 26s, 4.10s and 28s, 4.56s and 31s, 4.88s and 33s so your only one gear set lower than the norm.
max speed driveshaft can handle in 83 Monte
- Thread starter othtim
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stomis said:
Just add the rear gear won't determine driveshaft speed. Just the ngine rpm and what transmission your using. The 7000 he is tuning with a 1:1 ratio high gear is still slightly less than 7000rpm driveshaft speed due to convertor slippage.
It's really more of a concern for those of us running steep rear gears and overdrive transmissions. We are more likely to see the critical speed a lot easier than someone with a 1:1 trans ratio.
Take my combo, T56 6 speed with a .50 6th gear, 4.30 rear gears and 26" tall tires.
In 6th gear at 60 mph my driveshaft would be turning 3336rpm. At 100 mph that would be over 5500rpm.
I had a 3"x.083"x49.25" chrome moly driveshaft made with 1350 series yokes that according to this calculator has a critical speed of 9060rpm. So in 6th gear I should be safe up to 163mph.
http://www.wallaceracing.com/driveshaftspeed.htm
Take my combo, T56 6 speed with a .50 6th gear, 4.30 rear gears and 26" tall tires.
In 6th gear at 60 mph my driveshaft would be turning 3336rpm. At 100 mph that would be over 5500rpm.
I had a 3"x.083"x49.25" chrome moly driveshaft made with 1350 series yokes that according to this calculator has a critical speed of 9060rpm. So in 6th gear I should be safe up to 163mph.
http://www.wallaceracing.com/driveshaftspeed.htm
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