<VV> The number 4 main bearing

[BobHelt at aol.com]

Hi Everybody,
The number 4 main bearing had the centerline dropped by 0.0015 inches 
starting in 1960/61 to fix a "Thumper problem" (see the Tech Guide). This is a 
strange kind of fix (IMO), and would seem to place a strain on the end of the 
crankshaft, tending to bend it down. In addition it is well known that the Yenko 
Stingers (staring with Stage II, I believe) replaced this bearing with an 
intermediate type.

So I'm just wondering whether anybody has suffered any problems when using 
this dropped bearing in racing or other competition. And if you are using an 
intermediate bearing in this location, why?

Any thoughts or comments?

Regards,
Bob Helt