Ok, of the old's sold this weekend did have the aluminum block.
Here is a second reference
"Was at the Barret-Jackson today(it was cold out!) and saw a 1970 If I remember correctly, 442 with an factory experimental all aluminum big block Olds engine in it!
Never knew such an animal existed, have a feeling it's going to bring big bucks. Going back Tuesday and will take some pics of the claimed factory aluminum engine restored 442. Anybody know anything about this car???"
Experimental Aluminum big block...... - ClassicOldsmobile.com
Dont remember which car had it though.
ok, little more research, yep I am avoiding real work.
Description
UDetailed Information
Lot Number: 1091Auction: SCOTTSDALE 2013Status: SOLDSale Type: NO RESERVEPrice: *$80,300.00Year: 1970Make: OLDSMOBILEModel: 442Style: CUSTOM CONVERTIBLEVIN: 344670M232269Exterior Color: RALLY REDInterior Color: BLACKCylinders: 8Engine Size: 455Transmission: 4-SPEED MANUAL
"Upgraded with a rare all aluminum Olds 455. This type of engine was on the July 1969 issue of Hot Rod magazine in Can Am racing trim, complete with dual turbo chargers. The aluminum 455 was developed and raced in the Can Am Series to test performance and durability. While the aluminum block never made it to production passenger cars, aluminum intakes and a few other components did. The engine was completely and properly rebuilt utilizing a factory Olds steel crankshaft and all internal components are new as well. "
http://www.v8buick.com/showthread.php?260828-Holy-Cow-Batman!&p=2140328
Which I find out is a different red 442
sorry
http://www.barrett-jackson.com/application/onlinesubmission/lotdetails.aspx?ln=1091&aid=466