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08-07-2003, 11:37 AM
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CC Member
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Join Date: Nov 1999
Location: Las Vegas,
NV
Cobra Make, Engine: Classic Roadster; 351W
Posts: 743
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Not Ranked
Ron,
Here is what AFR recommends. Should be the same because you are dealing with the same size bolts and small block fords. Hope this helps:
Apply moly- oil mixture to washers, and area around head bolt to prevent galling and improper torque readings. Torque to 70ft/lbs. for 7/16" bolts or studs (289 or 302) or 100ft/lbs. for 1/2" bolts or studs (351W) in three or four steps following the factory tightening sequence. Then tighten the long (upper) head bolts or studs 80ft/lbs. (7/16") or 110 ft/lbs. (1/2"). A re-torque is recommended after initial start-up and cool down (allow 2-3 hours for cooling). Sealer should be applied to all head bolts or studs that enter into the blocks water-jacketing system. Permatex is a good general-purpose sealer.
TORQUING:
We suggest not using a Torque Wrench on intake and exhaust manifold bolts, accessory bolts,or spark plugs, as inaccurate torque wrench values can easily strip the smaller threads. Just snug up hand tight with a wrench only
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