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
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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