PAC Racing Shim Kit - 1.500 Dia. .570 ID (64pcs) MagnaFuel Square bore

Square bore

Shift Timer

the best aftermarket investment you can make

Kit includes 3/8" hose barb fittings and mounting hardwareDerale has been the leader in performance cooling for decades

Minor clearancing of block at bottom of cylinders and pan rails required

PAC Racing Shim Kit - 1.500 Dia. .570 ID (64pcs) MagnaFuel Square boreProduct Description: Valve Spring Shim 0. 015 0. 020 0. 030 0. 050 in Thick 1. 500 in OD 0. 570 in ID Steel PAC Racing Springs is part of the Race Winning Brands Family. With more than 100 years of spring manufacturing experience. We understand the demands of racing and provide a commitment to all of our customers to provide the best service possible. We continue to expand products and offer expanded onsite technical services at various racing events.