Funny, I have 72K on an LS1 ( and it has been rode hard
an put up wet many times, drag strip, road course, and
according to my co-workers the daily commute to the salt
mines) and have read post buy other Camaro owners with
near 200K without a rebuild.
Would you be referring to the same LS1 engine thats been in Camaros since
1998 and Corvettes since 1996? I think they have more than proven
themselves. Since working on hundreds Camaros and Vettes since '98 and '96
respectively, I have yet to see a "warped block." The LS1 in GTOs are the
same design as the F and Y bodies. I've been involved with and have build an
11 firebird with over 70k miles and have had no trouble with the stock block
even under Nitrous. Just goes to show you, don't believe everything you
hear. Might be time to get a new mechanic.
ASE Master Technician with L1 Advanced engine performance
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