JEGS
Roller Timing Chain Set for 1968-1995 Big Block Ford 429-460
555-20452
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Big Block Ford
Note: This JEGS 20452 Timing & Gear Set for 429-460 Big Block Ford includes a 3-keyway performance crankshaft sprocket. The standard timing mark is 0 and is for a factory emission-controlled engine with an 8-degree retarded timing dot. (Do not use this setting when installing a performance camshaft). A for advanced 4- degrees valve timing and R for retarded 4-degrees valve timing. When installing a performance camshaft, it is recommended to degree your camshaft for the best results.
Specifications:
Yes but pre 72 was straight up zero was zero. Ford changed straight up is at 4 derees ret.... So which factory are you referring to?
is this set pre 72 with a true 0 or is it 4 degees advanced as 1972 on? with timing marks lined up.
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