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GM# 12370839 1.6 Roller Rockers	$280.26
These small-block 1.6:1 ratio aluminum rockers are similar to the rockers used in the 1996 Corvette LT4 engine, except the trunnions have been machined for early model 3/8" rocker studs. These kits of 16 rockers includes nuts and instruction sheets. They are self aligning-style rockers with washers between the rollers and the rocker body for improved wear characteristics. Reducing the length of the rocker stud slots improves the stiffness by 30% over comparable aftermarket designs. These rockers will accommodate up to .575" valve lift. One of the main advantages of these rockers is about 2 ft/lb in rotation torque which provides a quieter idle.
GM# 12370835 Extreme Duty LT1 timing chain set	$216.78
This extreme duty timing chain kit is for late model "Gen II" LT1 and LT4 engines. Included in this kit are the following steel gears; water pump gear GM# 12551727, a camshaft sprocket, crankshaft sprocket GM# 14088784, and timing chain GM# 14088783. These parts are not the production replacement components, but a great performance upgrade. Use with 1995 and up pin drive camshaft only.