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Gt-40X Aluminum Heads Bolts Torque
Hey Guys,
I was wondering if anybody knows the final recommended head bolt/stud torque specs for the SVO GT-40X Aluminum heads??? Thanks. RZ |
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 |
You can call Ford tech line 586-468-1356.
The headbolt manufacturer (ARP?) could also advise. My FMS 351W was originally torqued at 110 so I reinstalled them at 110. Later I found that ARP would advise around 80 with their moly oil. |
Thanks Guys!
RZ |
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