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Technical 500 Caddy ?s

Discussion in 'The Hokey Ass Message Board' started by anthony myrick, Apr 5, 2018.

  1. bobbytnm
    Joined: Dec 16, 2008
    Posts: 1,375

    bobbytnm
    Member

    ....I forgot to mention, as it kind of goes without saying, you'll also need the pick up tube and screen that matches the oil pan.

    Bobby
     
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  2. panhead_pete
    Joined: Feb 22, 2006
    Posts: 2,537

    panhead_pete
    Member

    Richard Holdener has a series of videos posted recently testing different setups for these motors including hooking up with the Cad Company guys. Here's the 1st of those.

     
  3. southcross2631
    Joined: Jan 20, 2013
    Posts: 4,019

    southcross2631
    Member

    I have watching the Richard Holdener videos about the Caddy stuff. He really went all out to test the available combos. The Pro Charged 500 would be wicked in a 49 Chevy fastback.
    Makes me think about my next build.
     
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  4. ekimneirbo
    Joined: Apr 29, 2017
    Posts: 1,461

    ekimneirbo
    Member
    from Brooks Ky

  5. anthony myrick
    Joined: Sep 4, 2009
    Posts: 6,187

    anthony myrick
    Member

    Automotive students installed the cam and timing chain.
    9711CD66-6096-4FFB-AEF6-87B1B3C72379.jpeg
    My guys are getting the tins ready for epoxy
     
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  6. anthony myrick
    Joined: Sep 4, 2009
    Posts: 6,187

    anthony myrick
    Member

  7. anthony myrick
    Joined: Sep 4, 2009
    Posts: 6,187

    anthony myrick
    Member

    My 500 intake has 2 egr holes.
    Do these need plugged?
    I do have a non egr manifold on an 68 472.
    A3E7FA17-9CE4-4479-8D58-B4BE05DC1E70.jpeg
     
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  8. southcross2631
    Joined: Jan 20, 2013
    Posts: 4,019

    southcross2631
    Member

    Do yourself a favor and buy an Edelbrock intake for your Caddy. I tried all of the factory ones. I ported them . I acid ported the aluminum one .
    My driver for my stock car owned a junk yard and so I had free reign to help myself to all of the Caddy parts I needed.
    I even built a sheetmetal intake to get the mixture to stop running up hill. The factory intakes are low to clear the hood and to mount the a/c compressor on top.
    The intake I built was a short tunnel ram that ran 2 qjets. It took a while to get them to work, but after that it was a 13 second street car with a 2.41 gear and an honest 160 mph Gbody Malibu. They called me Caddabu for years around south Ga. because of my Caddy powered Malibu's.
    I put one in a LUV truck that was a real farm truck before farm truck got famous.
     
  9. anthony myrick
    Joined: Sep 4, 2009
    Posts: 6,187

    anthony myrick
    Member

    I would if I wanted to go fast.
    The 500 is going in a 63 b600.
     
  10. anthony myrick
    Joined: Sep 4, 2009
    Posts: 6,187

    anthony myrick
    Member

    Thanks for the info.
    Have valve springs from those guys on the way.
    I noticed in the video they killed 2 lifters. The roadkill guys did the same. They had to shim the rocker shafts up.
    looking into this.
    We are almost at that step.
     
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  11. southcross2631
    Joined: Jan 20, 2013
    Posts: 4,019

    southcross2631
    Member

    I never lost a lifter . When I built my Caddy stuff Maximum Torque Specialties was about it for Caddy parts . I modified big block Mopar rockers and had pushrod's made for my application to get the right length.
    I always used Rotella for the older diesels in my flat tappet motors. No additives ,no Special break in oil.
    I used a 500 Caddy in my 70 Chevy 3/4 ton tow rig that towed my dirt track hobby stock car on a heavy trailer that combined weight with tools and generator and spare parts and extra tires was probably a lot heavier than your bus. the Edelbrock had just came out and I used it on that application . It made even more torque than the stock cast iron one.
    That engine was completely stock except for the intake including cast iron exhaust manifolds. It never got over 4500 rpm's even towing. My truck had 3.73 gear and 31x 10 tires. I installed a vacuum gauge in that truck and it helped keep me in the highest torque range. Stock Caddy turbo 400 long shaft transmission.
     
  12. anthony myrick
    Joined: Sep 4, 2009
    Posts: 6,187

    anthony myrick
    Member

    The lifter failure was due to bottoming out
    The rocker arm shafts were shimed up to cure this in the roadkill build.
    Going to rewatch that one.
     
    Last edited: Sep 29, 2020
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  13. anthony myrick
    Joined: Sep 4, 2009
    Posts: 6,187

    anthony myrick
    Member

    Automotive students installed the new valve springs, then the heads today.
    9D6B09E9-5A6A-4BED-8B12-8ED05489FC37.jpeg D55819D6-EB38-46DA-9AEC-8E8A2D29A50D.jpeg DBCEB845-C9EE-4BFC-8C9C-E6828836B7AB.jpeg
    E3758826-1341-4EA6-9A60-5F2FDFAD3D9E.jpeg

    we decided to use the non EGR 1968 intake I had
     
    Last edited: Sep 29, 2020
  14. bobbytnm
    Joined: Dec 16, 2008
    Posts: 1,375

    bobbytnm
    Member

    Awesome! great progress
     
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  15. anthony myrick
    Joined: Sep 4, 2009
    Posts: 6,187

    anthony myrick
    Member

    Rocker arms installed.
    Students will do some measuring tomorrow.
    54076891-D1E5-4F13-86D9-C59D598EE4F3.jpeg
     
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  16. anthony myrick
    Joined: Sep 4, 2009
    Posts: 6,187

    anthony myrick
    Member

  17. anthony myrick
    Joined: Sep 4, 2009
    Posts: 6,187

    anthony myrick
    Member

    Another question. I just picked up the pulleys and brackets from a 425 caddy.
    Those are a ton lighter than the 500 cast iron ones. Can I use these on the 500? Is there a balance issue?
     
  18. ekimneirbo
    Joined: Apr 29, 2017
    Posts: 1,461

    ekimneirbo
    Member
    from Brooks Ky

    I think the offset is different but if you have all the parts they may work.
     
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  19. anthony myrick
    Joined: Sep 4, 2009
    Posts: 6,187

    anthony myrick
    Member

    The stuff I read on the ole internets claim these engines don’t need a harmonic balance unless it a HP high RPM application.
    Looks like the 73ish down has a heavy cast crank pulley with a separate small dampner
    The 74ish 75 has a heavy cast crank pulley with no dampner.
    The later versions have a stamped steel pulley.
     
    Last edited: Oct 21, 2020
  20. anthony myrick
    Joined: Sep 4, 2009
    Posts: 6,187

    anthony myrick
    Member

    Her is some pulley explanations with pics
    8521F43E-FCD7-439A-A1AB-38EDD1BEF83D.jpeg 6D3ADE94-5FC5-4A06-9F98-78FD13727ED5.jpeg 2186FED3-559F-479E-B6FD-BBEE7172C36B.jpeg
     
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  21. anthony myrick
    Joined: Sep 4, 2009
    Posts: 6,187

    anthony myrick
    Member

    Doing some out loud thinking for some air cleaner mods
    D1255E0B-79E1-4E1F-8ADB-0C1CD99A0F93.jpeg BE75A67C-13B2-4906-A4A7-5E69B78BC3D8.jpeg
     
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  22. ekimneirbo
    Joined: Apr 29, 2017
    Posts: 1,461

    ekimneirbo
    Member
    from Brooks Ky

    Are you asking for "honest" opinions ?
     
  23. anthony myrick
    Joined: Sep 4, 2009
    Posts: 6,187

    anthony myrick
    Member

    Nope.
    Just playing around. If the students like it we will go with it.
    It’s more of a teaching than an aesthetic issue
    It’s goofy and gaudy. Just like what the engine is going in.
     
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  24. MO_JUNK
    Joined: Jan 22, 2006
    Posts: 1,057

    MO_JUNK
    Member
    from Rolla, Mo.

    IMG_2310.JPG IMG_2312.JPG 472 in my 57' pickup. It's an excellent driver.
     

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