Anyone make 383 from 97-98 LS1 block? LS1/Ls6 book says no
02-26-2004, 07:14 AM
#1
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Anyone make 383 from 97-98 LS1 block? LS1/Ls6 book says no Read you shouldnt bore a 97-98 LS1 block to the 3.905 bore size. 99&up blocks can be used. 3.902 is the largest recommended bore. I can believe that .003 is a show stopper but I thought I would ask. That was out of Chris Endres book.
02-26-2004, 07:35 AM
#2
In a second interview, in March of 1997, John Juriga told me that the LS1 engines for MY97 and 98 will tolerate only about a .005-in. overbore which really amounts to just a clean-up hone. In 1999, the sleeves will be revised such that service overbore of .015-.020 is possible without compromising durability.
