Hey Greg, after our chat about the high speed propeller shaft failure I was showing you in my brother's LS powered Impala, I thought I'd share with you our experience.
So the replacement he has had made up has indeed been done by Hardy Spicer, he went to them armed with exact requirements based on motor power/torque output, trans & diff gearing, car weight and prop shaft length. Their engineer spec'd out one to suit and they came back with a quote of only $488.
Thinking that was pretty amazing value, he quizzed them as to exact specs, below is his Q&A with Hardy Spicer:
- you mention getting a slip yoke, is that included in the price? – Yes – Chrome Molly special
- is that for a single, chrome moly 3.5" OD tube, as discussed? – Yes
- what is the wall thickness? – 0.83
- are the 1350 unis included? – Yes solid cross lube free – the best we have
- what RPM is it rated for? – 4800 RPM
Keeping in mind the Impala item is a monstrous 1550mm long, the speed rating is therefore conservative. With 4 speed overdrive & 2.73:1 diff, that's still good for double the speed limit
Oh and a loop is being installed before it hits the dyno again too...
Anyway, I can't remember if you said you'd already had a prop shaft made up for your EK, figured you'd like to know, seems it can be done for a lot less than the $1000 figure we were discussing.
Cheers, Joe
Thinking about that is doing my head in 
