In the past I worked for a Corvette resto shop. We painted some Chevy Orange, and some Aluminum. I asked the owner of our shop one day why the difference. He told me that when he worked for Don Yenko in the 60's, all of the cars had aluminum bellhousings. The reason was Don Yenko was that picky. He also told me that some of the assembly plants would assemble the clutch disc, pressure plate, and bellhousing prior to installation, and when the engine was painted, the bellhousing would get some overspray from that. That is why some appeared to be Chevy Orange in color. Some would get more overspray than others. In his Corvette resto business, he would leave it up to the customer and give them their preference. That was why I saw it done both ways.
On my 70&1/2 RS Camaro, I chose to go with natural aluminum....matter of my preference after seeing it both ways.
[This message has been edited by Scooter (edited 02-09-99).]