Some of the responses to this thread are just dumbass wise guy responses. Totally unnecessary.
The NASCAR 427 Sideoiler was "the" race motor. Its different than a standard sideoiler in that its block has a higher nickel content, has a NASCAR crank with wider journals and NASCAR rods. Its superior in strength and oiling than a standard 427 SO.
Sounds like the guy is selling the REAL deal. If you don't like the price thats another thing.
I hate wise asses.
