Of course, applying racing anecdotes to street machines can lead one down all sorts of rabbit holes. We put a very radical down angle on the pinion flange, to minimize the U joint angle under hard acceleration. Spring windup under full throttle with a 400+ HP 327 Chevy engine, running in second gear of a Muncie 4 speed transmission against a 4.56 gear was considerable. Doing that full throttle acceleration out of the turns twice a lap put some incredible stresses on everything in the powertrain. My motto was "Build it three times as strong as you think it needs to be- - - - -and don't be too surprised when it breaks!"
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!