Allstar Performance Restrictor Plate Insert — 1.050in ID, Set of 4 for 1in Plate | ALL26059 1987-chevrolet-r20-esi6462180 and reduce air pressure when

and reduce air pressure when unloaded

engine oil droplets make their way back through the intake tract and can build carbon on the valves ultimately robbing your high-output V6 of its performance

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This kit is for use with original equipment style timing chains only

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Allstar Performance Restrictor Plate Insert — 1.050in ID, Set of 4 for 1in Plate | ALL26059 1987-chevrolet-r20-esi6462180 and reduce air pressure whenThis is a set of 4 Allstar Performance restrictor plate inserts with a 1. 050 in inside diameter (ID). They are made of natural finish aluminum and are sized for Allstar's 1 in thick adjustable restrictor plate. Spec Sheet: Allstar Spec Sheet Compatibility Fits Allstar Performance's 1in thick restrictor plate, ALL26060, sold separately. Does not fit the 1 2in thick restrictor plate, ALL26180; the two base plates use separate, non interchangeable