JPOR: Carb problem?

["BRERETON, John" <John_BRERETON@xxxxxxxxxxxxx>]

Riddle me this!  If gasoline is getting into the oil, is it a carb problem?
When a guy called me about this problem, I didn't see how it could be.  But,
then he said that when he takes the carb (a Holley) off and replaces it with
the original carb, the problem goes away.  He says the gas evidently really
pours in because he has to change the oil so much.  He has a 258, 6 cylinder
that he recently rebuilt.  Based on his description, I'm baffled.  I would
think that if the diaphragm in the fuel pump went the gas could get in, but
then you would probably notice the difference in the lack of power.  Any
"best guesses"?  Are there any problems inherent with the Holley carb that
would cause this problem?  He was thinking that maybe the Holley is too much
carb for the motor, but if that were the case all that would happen is that
he would blow black smoke, and foul the plugs, right?