GoLdeN M 07 wrote:
1) The bench dip works all the muscles the bench press does but does it do a good job in working the front delts?
Perhaps better, since the arms are kept close to the torso when you perform it. That increases the involvement of the triceps and anterior deltoid, and decreases the involvement of the pecs.
GoLdeN M 07 wrote:
2) And a few of u know that my left arm is much weaker than my right. Will doing heavy weighted bench dips help it catch up in strength with my right arm? I can do over 9 or 10 reps with 45 lbs on my lap. I need to know enough weight so i can only do 3-5 reps.
If you have a weaker left arm, you should do pressing/pulling exercises with dumbbells, iso-lateral machines or cables, where each arm presses/pulls the weight independently. Start out with a weight that the weaker arm can handle, and gradually increase it as the weaker arm gets stronger. When you do exercises like the bench dip, the stronger arm will contribute more to the effort.
Don't worry about the stronger arm not getting trained hard while the weaker arm plays catch-up. You don't want to develop a lobster-claw like imbalance between the two.