Quote:
Originally Posted by Billy Mild
True big blocks are designed differently. They have a lot of cylinder material. The LS7 engine has almost paper thin cylinder walls. There is no service life in that engine.
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Chevrolet big blocks are an engine family made production from 1958-1972 I believe. Ranging from 348-454 ci then a later year over the counter up to 572 inches.
The LS7's (part of the small block engine family Gen. III & IV) are modern day monsters that are clean from a emissions view and get decent fuel mileage . The cylinder walls are very easily replaced. The service life of an LS engine is an extremely long one.
