July '16

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JULY 2016 PRECISION ENGINE 1 PRECISION ENGINE PART 5 LS NEXT Addressing the cylinder heads and top-end assembly. Build, Text & Photos By Mike Mavrigian PROJECT In this install- ment of our on- going LS Next engine build, we assemble the cylinder heads, rockers and pushrods. EDITOR'S NOTE: THE SHOP follows along as Mike discusses the details of building a custom LS Next engine. See Part 1 in THE SHOP August/September 2015 issue; see Part 2 in the October 2015 issue; Part 3 in the January 2016 issue; and Part 4 in the April 2016 issue. I n this installment, we assemble the cylinder heads, rockers and pushrods. We'll begin this article with cylinder head information and installation. When checking the installed fit of each cylinder head stud, verify that the unthreaded portion of the stud does not enter the threaded hole. Forcing the bar shank into the threads can potentially create a stress point that can crack the block. In this example, the threads are still exposed. This ARP head stud features an ex- tended nose at the stud tip, keeping the bare stud shank from entering the hole. Our Fel-Pro cylinder head gaskets are MLS (multi-layer steel), featuring a gasket bore diameter of 4.200 inches and a compressed thickness of 0.051 inches.

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