If your cam is an 041 "clone", the specs can be listed slightly different.

But, the intake lobe duration @ .050 lift is usually listed at either 230 or 231.

https://butlerperformance.com/i-24453381-melling-hydraulic-flat-tappet-cammel-spc-8.html

http://www.cranecams.com/product/cart.php?m=product_detail&p=23900

I've read that all the currently available 041 clones are exactly the same cam, made by the same company, probably CMC. These cams are resold by the different cam companies, under different brand names & part numbers. And some of the brands show slightly different specs, even tho the cam is exactly the same.

https://www.ebay.com/itm/Pontiac-Ram-Air-IV-Cam-Lifter-Kit-lifters-camshaft-400-455-428-GTO-Firebird/273099623863?hash=item3f96018db7:g:0ooAAOSw2s1Uwp5F&vxp=mtr