Source for head studs 251 C.I. engine

Dodgeit · Nov 3, 2012

Need new head studs, I suppose. Valves are in bad shape as far as angles go. They've opened and closed so many times, they have given themselves a reverse angle valve job.

Something besides OEM work? They are the A8500 LP heads.

John Saeli · Nov 3, 2012

I replace studs with bolts whenever I can. A head held with bolts is much easier to remove when the time comes. CASE switched to bolts shortly after 1960.

Dodgeit · Nov 3, 2012

Hey John, I called earlier and talked to your wife about valve availability and price, from the OEM. Any alternatives to OEM?

Anonymous-0 · Nov 3, 2012

without looking it up is the torqe spec differen't between a fine thread stud nut to a coarse bolt torque? It should be.

Dodgeit · Nov 3, 2012

(quoted from post at 21:19:45 11/03/12) without looking it up is the torqe spec differen't between a fine thread stud nut to a coarse bolt torque? It should be.

I'm pretty sure your right

EliG · Nov 3, 2012

Head studs are still available from Case. Original part number is O9756AB which subs to CAS A21058. They were $20.13 each. I'm glad I only needed one when I rebuilt my 251.

Good luck!

John Saeli · Nov 4, 2012

Doug: Good question. CASE Service Manual says "Bolts are 9/16 NF Grade 8, 145 - 150 Torque. But I never saw a NF CASE Head Bolt. The manual was printed in the 60's.

Source for head studs 251 C.I. engine

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John Saeli

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