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Chevy 235 Delima

Discussion in 'The Hokey Ass Message Board' started by chevelle bob, Nov 5, 2013.

  1. chevelle bob
    Joined: Apr 1, 2010
    Posts: 209

    chevelle bob
    Member
    from Linton

    Need some opinions on what to do with my 235. I am building my 52 Belair into a mild custom and I have bought a running 1956 full pressure 235. I have a triple offenhauser for it and a fenton split header. I have to remove the cam so I can swap out the front plate and this is my delima. I have heard that I really need a hotter cam to run the triple carbs so while I have the cam out should I stick in a new cam and lifters? I do not want to do a complete overhaul and replace the cam bearings so should I just stick the original cam back in and go with a progressive linkeage on the triple? This car is for cruising and occasional highway use. I already ahve the intake and carbs and love the look so I want to use it. I have the money for the cam and lifters just would rather use it on other things for the car.

    Thanks for you input
     
  2. NEWFISHER
    Joined: Dec 16, 2011
    Posts: 591

    NEWFISHER
    Member
    from Oregon

    Speed equipment and Hot Rodding it is cool, but leaving the cam and using a progressive linkage set up for the driving style you want should be fine. Like you mentioned, you will have money left over to buy more cool stuff!
     
  3. robH
    Joined: Sep 8, 2009
    Posts: 38

    robH
    Member

    The cam is your call. Do you want to mess with a 'rumpty' on a cruiser? If it were me, I have access to a local cam-grinder, and I would have the stocker 'freshened-up' with something very mild. As for cam bearings, I would check them for looseness (wiggle the cam in the front bushing when you have the cam out), and go ahead and run them as-is. As for triple carbs, your call again. If triple is too much, and I think it might be, one carb could be a 'dummy', not necessarily operable. Just an opinion (and you know what that's worth)
     
  4. Question here. Color me dumb if you like. Is the offy a common plenum intake or seperate plenums for each carb. If the carbs are on separate plenums you can't run progressive.

    As for the cam, if it were mine I may want one that is slightly healthier, maybe not a balls to the walls racing cam but on that is not old worn and weak.
     

  5. CNC-Dude
    Joined: Nov 23, 2007
    Posts: 985

    CNC-Dude
    Member

    If it is going to have the stock compression and a stock cam its going to be over carbed even with progressive linkage.
     
  6. Con Safos
    Joined: Mar 7, 2013
    Posts: 53

    Con Safos
    Member

    I have heard, that you can cap the two end carbs and just run the center one, using the end carbs for just looks. I don`t know if this is true or not. I would kinda like to know?
     
  7. CNC-Dude
    Joined: Nov 23, 2007
    Posts: 985

    CNC-Dude
    Member

    Well like porkandbeaner said, it all depends on the design of the plenum. If all three carbs share the same plenum, then you can use a progressive linkage or even cap one or two of them off. But if each carb has its own seperate plenum to fed each pair of cylinders, then you can't.
     
  8. Con Safos
    Joined: Mar 7, 2013
    Posts: 53

    Con Safos
    Member


    Makes perfect sense! Thanks!:D
     
  9. chevelle bob
    Joined: Apr 1, 2010
    Posts: 209

    chevelle bob
    Member
    from Linton

    Thanks guys. I will have to check the manifold about the plenems. I think I will check the cam for looseness as suggested and stick with original if it is ok. Someday I am going to get around to posting a build thread on it.
     
  10. HEATHEN
    Joined: Nov 22, 2005
    Posts: 7,618

    HEATHEN
    Member
    from SIDNEY, NY

    An Offenhauser intake is wide open inside, so progressive linkage would be no problem.
     
  11. jkski
    Joined: Jan 27, 2009
    Posts: 137

    jkski
    Member

    offy intake,headers and a mild lopy cam from howards,maybe new lifters and push rods.sound sweet on the street!
     
  12. jcmarz
    Joined: Jan 10, 2010
    Posts: 4,633

    jcmarz
    Member
    from Chino, Ca

    no such thing as progressive linkage on a Chevy 6.
     
  13. HEATHEN
    Joined: Nov 22, 2005
    Posts: 7,618

    HEATHEN
    Member
    from SIDNEY, NY

    Offenhauser makes it for the three carb intakes for the later Chevy 23-/250/292, and I don't imagine that it would be difficult to adapt it to the earlier intakes.
     
  14. 'Mo
    Joined: Sep 26, 2007
    Posts: 7,431

    'Mo
    Member

    Send your cam to Delta for a regrind. Also have the lifters resurfaced.
    $100 should cover it all, and net you change. Turnaround time is just 2 weeks.

    They grind cams for some well known Chevy specialty houses.
    Their 254 grind would be a good choice.
     
    Last edited: Nov 5, 2013
  15. fordcragar
    Joined: Dec 28, 2005
    Posts: 3,179

    fordcragar
    Member
    from Yakima WA.

    I think that I would go the other way and cap the center carb. Just run the end carbs.
     
  16. chevelle bob
    Joined: Apr 1, 2010
    Posts: 209

    chevelle bob
    Member
    from Linton

    Heathen, would you have the part number for that progressive linkeage? Thanks.
     
  17. HEATHEN
    Joined: Nov 22, 2005
    Posts: 7,618

    HEATHEN
    Member
    from SIDNEY, NY

    I'll dig out an Offenhauser catalog tonight and look for it.
     
  18. HEATHEN
    Joined: Nov 22, 2005
    Posts: 7,618

    HEATHEN
    Member
    from SIDNEY, NY

    The catalog I looked in didn't list a separate part number for the linkage; it just gave one number for the 250 intake with linkage.
     
  19. chevelle bob
    Joined: Apr 1, 2010
    Posts: 209

    chevelle bob
    Member
    from Linton

    No problem, thanks


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  20. Heathen
    First off thanks for the clarification on the intake plenum.
    As for progressive a lot depends on the carb orientation, if they are running forward like the statdard setup for a V-8 for instance it is a piece of cake, but if they run sideways then it is difficult, still it can be done just not as easily. I have seen caebs on 235s run both ways.
     
  21. cederholm
    Joined: May 6, 2006
    Posts: 1,621

    cederholm
    Member

    Yes, it can be done and would work like stock. ...just make sure you don't introduce any vacuum leaks.

    ~ Carl
     
  22. Con Safos
    Joined: Mar 7, 2013
    Posts: 53

    Con Safos
    Member


    Good to know! I was thinking of doing it myself, 3 carbs seems like a lot of babysitting!!
     
  23. chevelle bob
    Joined: Apr 1, 2010
    Posts: 209

    chevelle bob
    Member
    from Linton

    Thanks guys


    Posted using the Full Custom H.A.M.B. App!
     

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