LS3 Ported Head Comparisons

Reference HotRod online, see link below for pictures and dyno charts http://www.hotrod.com/techarticles/engine/hrdp_1102_ls3_l92_rectangle_port_cylinder_heads_test/viewall.html Loyal HRM readers will no doubt remember our "Ultimate Chevy LS Cylinder Head Test" in the Dec. '10 issue in which we tested 11 different LS1/LS6 cathedral-port-style heads. In this issue we're doing the same thing, but with LS3/L92 rectangular-port heads. Included are dedicated castings from Mast Motorsports and Proco...

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