Any LS6 Chevelle required the $503 SS 454 option ... Jeff Mackay of Mackay Engines in Rochester, Illinois, handled the engine rebuild. The block, cast in November 1969, is missing the block ...
Install was super easy and the included sheetmetal intake did well, making more peak hp than the LS6 intake on our mile 5.7L LS engine. This is a great kit for those looking to get LS engines ...