Cloyes Hex-A-Just True Roller Timing Chain Set - Standard Center Distance - SB Chevy "Rocket" Block 430-02-05 They improve throttle response and

They improve throttle response and fuel economy / and reduce fouling

Kit includes two restrictors

For proven quality and performance

1996-1999 Chevrolet Express 2500

1960-1969 Chevrolet Corvair

Cloyes Hex-A-Just True Roller Timing Chain Set - Standard Center Distance - SB Chevy "Rocket" Block 430-02-05 They improve throttle response andMake quick and precise cam timing changes with no troublesome offset bushings or keyways. Torrington thrust bearings reduce friction between the block and cam sprocket. Most sets are offered with . 005" or . 010" reduced center distance. An industry breakthrough when introduced in 1992. Since then the accuracy and simplicity of our Hex A Just(R) system has been unmatched by our competitors. The Hex A Just(R) True(R) Roller Set is infinitely adjustable