Ford Racing 347 Series Sealed Engine Handbook
Issue Date January 25, 2013 Revision #7
No part of this document may be reproduced without the prior agreement and written permission of Ford Racing
13
Exhaust valve material Stainless Steel
Exhaust valve stem diameter 0.343"
Valve spring part number M-6513-BH
Valve spring locator M-6536-BH
Approved optional spring COMP 26918 or PAC 1218
Valve spring installed height 1.750" – 1.800"
Valve spring closed pressure 130 lbs. @1.800"
Valve spring open pressure 313 lbs. @ 1.175"
Retainer Part Number M-6514-BH (steel)
Valve lock angle 10 degrees
Valve lock M-6518-BH
Camshaft # 35-410-8 (Comp Cam) Hydraulic roller
Cam Timing Position "0" (multi index crank sprocket)
Intake Centerline/Lobe separation angle 106° / 110°
Advertised duration Intake 260° @ .002" lift
Advertised duration Exhaust 260° @ .002" lift
Duration @ .050 Intake 206°
Duration @ .050 Exhaust 206°
Valve lift intake at valve (calculated) 0.533"
Valve lift exhaust at Valve (calculated) 0.533"
Camshaft lobe lift – intake and exhaust 0.333”
Lifter part number M-6500-R302H
Pushrod part number M-6565-L302
Pushrod diameter 0.312"
Rocker arm part number M-6564-B351
Rocker arm ratio 1.6:1
Valve lash ½ to ¾ turn maximum
Intake Manifold Edelbrock 7521 Performer RPM Air Gap