PAC Racing RPM Series Valve Spring Beehive Spring 340 lb/in Spring Rate 1.100" Coil Bind - 1.207" OD 4904 These cylinder heads feature a

These cylinder heads feature a 65cc or 75cc combustion chamber with a 64cc exhaust port and a 3/4'' thick head deck (ideal for nitrous or blower applications)

especially after the effort

Improved port design for more performance

2" Wheelbase

AutoMeter makes it easy with our patented air core meter movement with built-in extra dampening to help combat the effects fuel slosh in non-baffled tanks

PAC Racing RPM Series Valve Spring Beehive Spring 340 lb/in Spring Rate 1.100" Coil Bind - 1.207" OD 4904 These cylinder heads feature aProduct Description: Valve Spring RPM Series Beehive Spring 340 lb in Spring Rate 1. 100 in Coil Bind 1. 307 in OD Set of 16 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