GM Aluminum Block Small Block Chevy Casting 0 359198

[SuperNovaSS]

Thanks Pete,


I had come across the articles you attached in my searches but there is not much concrete info. The military theory is a possibility but I don't think it would have an O casting in that case.

Here is the one that Heartbeat City posted but that all the info I have on it:

https://twitter.com/hbcitycamaro/sta...52115568164864


Thanks,


Jason

[RobR]

Jason, I’m guessing the short block is IndyCar type to meet the stock-block rules.
Scale the stroke, should be approximately 2.2”. In the early 70s they were experimenting with the flat plane crank and the engines displaced about 207ci.
Below is a link to an old ad for one Smokey Yunick built.
https://grassrootsmotorsports.com/fo...e/37588/page1/