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  • Rocker arms and shafts

    Are the valve train parts (push rods, rocker arms, and shafts)interchangeable between different heads/engines? I have the opportunity to buy a pair of 289 heads with casting number 537555. These heads are complete but without the rocker arms and shafts. I have a pair of 232 heads with casting number 527772 that do have the valve train with them. Can I use the 232 valve train with the 289 heads?

    Here's the situation. About 25 years ago I bought a rusted out 53 Commander hardtop from a guy who had been a mechanic at the local Studebaker dealership. He had bought the car in the mid-fifties. The dealership had a 289 block that was nearly new but had a cylinder scored when a wrist pin came loose. Studebaker had sent a replacement block but didn't want the damaged one back. The mechanic was given the block and he had the bad hole bored and sleeved. He then built up an engine using the 289 block and the crank, rods, heads, etc. from the '53' 232 engine. I don't remember exactly what he told me but he must have had to at least buy a set of 259 pistons.

    The engine ran strong and didn't smoke or overheat so I kept it. I am thinking of using this engine in my retirement project which is a 53 hardtop I am building out of the remains of this car and pieces of a couple of others. I'd like to use the 289 heads for better breathing.
    54 Commander Coupe driver
    53 Commander Hardtop project
    SE Washington State

  • #2
    Interesting story, Cliff! I'm no expert, but I believe from what I've read that the valves are different sizes and would not be interchangeable. The geometry might be different, too. Someone with more knowledge will ring in shortly, I'm sure.


    [img=left]http://members.cox.net/clarknovak/lark.gif[/img=left]

    Clark in San Diego
    '63 F2/Lark Standard

    The Official Website of the San Diego Chapter of the Studebaker Drivers Club. Serving San Diego County

    Clark in San Diego | '63 Standard (F2) "Barney" | http://studeblogger.blogspot.com

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    • #3
      Cliff -

      No, you cannot use the valves. The valve head diameters are different.
      You really don't want to mix old parts like this anyway. Save your money and buy new valves.

      The 259 and 289 blocks are the same. The heads are the same. The rods are the same. These will all interchange easilly with no other alterations.
      The difference in cubic inches comes from the crankshaft and different compression height pistons.

      While most Stude V-8 parts will interchange, one must be carefull about these combinations.
      Like the rocker arms, pushrods...they need to be checked per the rest of the parts.
      The pre-55 engines used a shorter pushrod. I believe there was small differences in the rockers but will work...just not be the "better" choice.

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      • #4
        To clarify a bit. The 289 heads have the larger valves and springs with them. The 289 block was running fine with the heads, rocker arms, shafts, and push rods from a 232 engine. My question is can I install the 289 heads and still use the rocker arms, shafts, and push rods from the 232 engine?
        Thanks.
        54 Commander Coupe driver
        53 Commander Hardtop project
        SE Washington State

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        • #5
          Yes.

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          • #6
            Note the change in push rod length 61 or 62 and newer are 1/4" shorter than the earlier push rods.

            Dan White
            64 R1 GT
            64 R2 GT
            Dan White
            64 R1 GT
            64 R2 GT
            58 C Cab
            57 Broadmoor (Marvin)

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            • #7
              No Cliff, you cannot! The rocker arm stands and push rods were from a 232 head and those underwent TWO changes between the 232 and a late 289 engine.

              As Mike mentioned, it is not a good idea to mix the valve train parts because there were slight, barely noticeable changes! Your 537555 casting number heads are the very common (mostly from 259 '59-'60 Larks) 8.5 to 1 heads used from 1955 to 1960 on both 259 & 289, you should be able to find the correct rocker arm assemblies and push rods for them.

              quote:Originally posted by cliffh

              My question is can I install the 289 heads and still use the rocker arms, shafts, and push rods from the 232 engine?Thanks.
              StudeRich
              Studebakers Northwest
              Ferndale, WA
              StudeRich
              Second Generation Stude Driver,
              Proud '54 Starliner Owner
              SDC Member Since 1967

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              • #8
                According to his story at the top. the heads are from a late 50's so the stuff will work.

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                • #9
                  No they will NOT! He says he has only the 232 rocker arms, since the newly purchased 289 heads came without them!
                  Also with the 232 heads he was running on the 289 it also would have had the matching original 232 push rods from the original engine in the '53 Comm. since the Stude. Mech. only got the bare block that the Factory had replaced with a block & piston assy. to repair the scored Cyl.

                  quote:Originally posted by Alan

                  According to his story at the top. the heads are from a late 50's so the stuff will work.
                  StudeRich
                  Studebakers Northwest
                  Ferndale, WA
                  StudeRich
                  Second Generation Stude Driver,
                  Proud '54 Starliner Owner
                  SDC Member Since 1967

                  Comment


                  • #10
                    StudeRich, Thanks for the advice. I'll be looking for a complete 289 valve train setup. BTW, I'm in Walla Walla.
                    Cliff
                    54 Commander Coupe driver
                    53 Commander Hardtop project
                    SE Washington State

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