Rod Bolts

BillUSN1BillUSN1 Member
in HUDSON Posts: 272
After searching and asking all I found discussed was the 351C ARP rod bolts for a replacement.
I bought a set and measured them and it was going to take some reaming of the rod bolt holes in the rods or turning/polishing the new bolts to the correct size. The top of the shoulder was about .380.
So I bit the bullet and sent a stock bolt to ARP to see if they could match it up.
What I got was a more direct fit, readily available rod bolt.
He said the original listing is for a Studebaker engine.
Here's some pics and the part number should others need/want them.
I will add additional parts and fasteners I have selected for my new 308 when I start a complete write up on the build.
I was hoping to have it done already but it seems winter is the build season and I have been swamped with EFI conversion kit orders.
Not complaining but it really hurts my build time!

Hamilton Fuel Injection


  • Geoff C., N.Z.Geoff C., N.Z. Senior Contributor
    Posts: 3,451
    Looks good.  Now what about the palnuts?
    If you're stuck in a hole, stop digging.
  • BillUSN1BillUSN1 Member
    Posts: 272
    You can see the new 12 point ARP nuts that will get a drop of Loc-tite.

    Hamilton Fuel Injection
  • GrimGreaserGrimGreaser Senior Contributor
    edited April 28 Posts: 746
    For those needing palnuts:

    Thanks for the part numbers Bill!
    *** Everyone welcome my brand new Grease-ette, Molly. Born 6/15/18 ***
    3D printed Stepdown gauge faces and other small parts
  • Ol racerOl racer Senior Contributor
    edited May 9 Posts: 2,394

                                                                                                                                             I would not bother with Pal nuts especially using ARP fastners

    (actually, I haven't used Pal nuts on a 308 since late '50's when I circled Track raced Hudson's)

  • Posts: 28
    I love this forum, I needed this exact information today (holding rod bolt exemplar in hand)!  I will be ordering my own in the morning!
    Thank you BillUSN1
    Can't wait to see more of your engine build...
    Also happy to put a proper name to the Pal nuts I removed...
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