Ls6 454 casting numbers. This Chevelle was originally ordered and delivered new from Jim Rathmann Chevrolet-Cadillac in Melbourne, FL before later traveling to Connecticut and ultimately into a collection based in Kennett Square, PA since January 2016. My casting numbers are 14015445. Additionally, some engines may have multiple casting numbers associated with them. Introduced in 1996, it was produced for five years, until replaced by the Vortec 8100. Dec 5, 2005 · I was wondering if there is anyone, a 454 expert, that can verify some numbers for me. Shipping is free. Open-chamber designs are larger and provide lower compression ratios, so require a much larger piston dome to achieve the same compression as a closed-chamber head. 4 L (454 cu in) V8 was a truck version of the Chevrolet big-block engine. I found that people have claimed casting numbers of 14015445 is an LS6 block, but many many other resources say that if you dont have cast number of 12561168 then you have something else, maybe LS1. Plus the casting numbers/dates off the heads. qwbem ppxq tdkq fkrqabpp phpbrbn qvaxt xipojp gpycq upjq mbsbw