Are you sure you have the spec's right?

Ron - I got your e-mail, but replies bounced because you've munged
your return addy. I know beans about compressors so I had to ask -
Mike

Small compressors typically do about 4cfm@40psi and 2cfm@80.
They work well for painting, inflating tires, etc.. but don't
have punch for a lot of rotary tools.

A 40CFM@80 will be a larger tanked model with 5HP or more for
the motor.