PAC Racing Shim Kit - 1.500 Dia. .570 ID (64pcs) 359602 Once the ignition tests good

Once the ignition tests good

570 exhaust valves these heads move massive amounts of air

Head Bolts

Performer Air-Gap

38'' diameter opening

PAC Racing Shim Kit - 1.500 Dia. .570 ID (64pcs) 359602 Once the ignition tests goodProduct 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.