**Due to the COVID-19 pandemic a large number of products are on backorder and shipping times are longer then usual.**
Circle Track Techbook
Technical manual for GM Circle Track crate engines P/N 19258602, P/N 88958603 and P/N 88958604. Covers all details regarding rebuilding specifications, including parts lists. 47 pages with photos and details on valve machining, valve springs, camshafts and other factory specifications.
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