Cnc 243 heads dyno
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CNC HEAD PORTING For Evolution Big Twin: Our New Web Site is Actively Being Built New Content is Being Added Daily. In the meantime, please give us a call at (208) 696-1250.
243°.162".125" 98.5° 110° 28.5: Shines in 114 and larger engines with increased compression. Easier to tune and better street manners than the 508. Requeires high lift valve springs. 2250-6250 RPM: 592: INTAKE EXHAUST.578".592" 20° 68° 34° 16° 234° 264°.182".146" 97° 116° 36 "The Big Nasty".