by Greg Acosta | Sep 23, 2025 | 4.125, 427, 5.3, aluminum, Boostline, Boostline performance, dry deck, dry sleeve, kpe, LS, News, sleeved block, Steve Morris
From the factory, the drawback of the Gen IV truck engine is the small bore size. 5.3L LS blocks modified to accept a Darton sleeve capabale of housing a big bore have never been more available.
