1963 Indy 500 from LP 1 hour long, available at this link. Pretty awesome to listen to.
The first 5 minutes is Bobby Unsers qualifying attempt in the Tropicanna/Novi all 4 laps. Nice sound from this engine. I downloaded it 24.7 and 26.3mb. It's like listening to the race.

http://www.yesterdaysneuz.com/Indy500.html