Quote:
Originally Posted by Excaliber
Depending on the final drive ratio (rear gear X 1st gear ratio= Y) I think under 4 is possible with a small block? The BMW half shafts are apparently weaker than other typical IRS units found in Cobras, as far as torque rating is concerned. Jag, Ford, Kirkham/Shelby style, etc. are stronger units.
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"apparently weaker", the scientific, classic engineering response...
I have hit 3.6, 3.7 and 3.8 0-60 times with the older style BDR half-shaft with no problem. Also, I have made over 20 hard trips down the 1/4 mile with sticky drag radials and had no issues with the half shaft. Yes, sub 4's are possible with a small block, easily and repeatedly. My car was build in 2006 and I'm still on the orginal half shaft. I was worried when I read everyones opinions, but opinions, like the one above are no match for real world testing. BDR makes a fine product, cabable of handling tremendous abuse.