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Not one answer on ET's. only a VERY slight 60' drop. Which I can not see being the cause of the shaft. I dropped .3+ one night at the track. Seems like a big headache to me.
overall the drive shaft is lighter then stock.. got rid of the clunk the 2 peice had, i didnt really notice any diffrence in my e.t's because i installed it with 4.10 gears aswell so any drop in my e.t was due to the gears prolly
w/ the g-tech i would get to 60 mph consistantly in 4.9x with just one run on a 30 degree day i got 4.83(could've done better if i ran it afew times). So .2-.4 off the 1/4 sounds legit.