double hump heads-screw in stud advice

Discussion in 'Engine / Swaps etc.' started by Rooster, Mar 19, 2010.

  1. Rooster

    Rooster Apprentice

    Jan 3, 2010
    Likes Received:
    Well I got my heads back from the machine shop today.They are 462 castings,2.02/1.60 stainless valves,bronze? guides,surfaced, .500 lift springs,59cc comb.chambers. They are tapped for 3/8 screw in studs.CR is 10.4:1. They were bare castings when I took them in,so my mach. shop guy went all the way through them,except studs and guide plates, as i was already looking at divorce if I spent 1 more cent,LOl What studs should I use? It's basically going on a street/performance application,350 4-bolt SBC .30 over w/dished pistons,pretty much stock short block. The cam is a Melling C-400-P Hyd. .447 lift/222 dur.Just wondering if I need to use guideplates also.I'm thinking ARP studs,probably stock size,don't really know.Anyone have a part number,that would be greatly appreciated.
  2. 86Cutlass383SR

    86Cutlass383SR G-Body Guru

    Apr 1, 2009
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    Chevy rocker studs are made in both 3/8 and 7/16. Both use the same 3/8 hole in the head.

    With a cam that size, I'd just use the stock sized 3/8 studs. If you might be looking at upgrading the cam sometime in the future and need new rocker arms anyway, then it'd be cheaper to just install the 7/16 studs and rockers now. The 7/16 will be more stable with stiffer springs and more lift.

    Sorry, I don't have a part number for ya but you could probably call Summit or whoever you're buying them from and they could tell you the correct numbers.

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