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 ...
LS3's can make great power with the stock heads, but Trick Flow engineers combined the best features of GM's LS3 and LS7 cylinder heads with its own race-winning engineering and technology to create ...
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