Hi guys, I was wondering what the clearance was on a two wheel drive with a 460 between the valve cover and the AC box? Mine are only 3.5 inches high, but idle time has me wondering. My truck is still at paint, so I can't even get a visual. Here is a picture of the valve covers. I ordered the smaller diameter 9" power steering pump so hopefully that side will be fine. Help please.

 

i have the same engine [460] with the air box in the engine comp also in my 78 reg cab i used edelbrock aluminum valve covers with a spacer tight but they work

 

Thanks, do you know the height of the valve cover with the spacer by chance?

 

As long as they are considered "low" or stock height you should be ok. Yours don't look like "tall" ones to me.
I think your going to be fine.

Bucks77Ford has A/C on his truck and there are pics of his engine in his gallery. He had to stay with stock height.

I used Canton's and that height brought on a hydroboost installation. With thick gaskets I have 1/2 of space between the cover and hydro unit.