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Ken Haase · 06-17-2015, 01:10 PM

Larry, assuming M/T #3074's, which they show as having 100" rollout and will probably grow 2"-4" at least at 130 MPH (I'm guessing at your teminal speed) my formula predicts 7920 RPM with 100% lock up. Multiply that by 1.05 for slippage and you have 8316 RPM. So, maybe you get a little tingle, LOL.

My '65 Chevelle with it's 115" wheelbase has a shaft approaching 60" and I think my guy is using 3.5" steel. Back in the day, I spit out a stock GM 'shaft at 100+ but it was because the u-joint failed. If you happen to be nodding off like I was, it will wake you up. And destroy you trans case as someone mentioned.
Ken

06-17-2015, 01:10 PM	#371
Ken Haase Member Join Date: Mar 2007 Posts: 233 Likes: 0 Liked 1 Time in 1 Post	Re: Woodfin's SS GT/TB construction series Larry, assuming M/T #3074's, which they show as having 100" rollout and will probably grow 2"-4" at least at 130 MPH (I'm guessing at your teminal speed) my formula predicts 7920 RPM with 100% lock up. Multiply that by 1.05 for slippage and you have 8316 RPM. So, maybe you get a little tingle, LOL. My '65 Chevelle with it's 115" wheelbase has a shaft approaching 60" and I think my guy is using 3.5" steel. Back in the day, I spit out a stock GM 'shaft at 100+ but it was because the u-joint failed. If you happen to be nodding off like I was, it will wake you up. And destroy you trans case as someone mentioned. Ken