| This double-roller timing-chain set is a perfect complement to our high-performance camshafts and other LS1/LS6 engine components. It offers greatly enhanced strength and accuracy compared with the stock piece and even allows for timing adjustments (advance or retard) of up to 8 degrees.
The set contains an adjustable, nine-keyway nitrated crankshaft sprocket; a double-row chain; a nitrated camshaft sprocket; two oil-pump-spacer plates; detailed instructions; and all necessary installation hardware. Compatible with all 1997-03 Gen III engines (LS1/LS6, 4.8L, 5.3L, 6.0L). | 
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