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Hot Rods 283

Discussion in 'The Hokey Ass Message Board' started by Edward E Scheib, Feb 28, 2020.

  1. Edward E Scheib
    Joined: Feb 28, 2020
    Posts: 19

    Edward E Scheib

    Help. 1957 stock 283 with power pack heads. 9:5:1 compression. Want to put 2 500cfm carbs and a thumper cam. What are your thoughts?
     
  2. If you use vac secondary carbs that is OK enough. The Poser cam is a definite NO from me. Buy a copy of a Duntov cam and run with it.
     
  3. I had a 272 in a "46 Ford P/U that had 2x4 autolites and the supercharger cam. Ran good, took a little tuning with the power valves and jets. With the thumper cam you may need to use a gear change to keep the RPM's up. Tuning, tuning, tuning.
     
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  4. badvolvo
    Joined: Jul 25, 2011
    Posts: 471

    badvolvo
    Member

    I am now a fan of custom made camshafts, call Bullet and tell them what you have and want out of it, for a few extra dollars you will get what you want.
     
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  5. Beano, knows his stuff, listen to him. HRP
     
  6. fastcar1953
    Joined: Oct 23, 2009
    Posts: 3,567

    fastcar1953
    Member

    Go with roller cam. Two many problems with flat tappet cams these days. Thumper cam way to big for 283.
     
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  7. Edward E Scheib
    Joined: Feb 28, 2020
    Posts: 19

    Edward E Scheib

    I am running the stock poweglide. I thought about putting in 4:11. Not looking to race. Wife drives car as well. Just want the look and sound. Do you think dual fuel injection work better for less tuning?
     
  8. lake_harley
    Joined: Jun 4, 2017
    Posts: 2,160

    lake_harley
    Member

    Just for the heck of it here's the math I'd apply.

    283 Cu. In. X (an optimistic) 7000 RPM = 1,981,000 Cu. In. per minute at 100% pumping.

    But, now divide that by 2 since it's a 4-stroke and only has an intake stroke every other revolution, so that becomes 990,500 Cu. In. per minute.

    Divide that by 1728 to convert Cu. In. to cu. Ft. and it becomes 573.2 CFM

    porknbeaner is giving good advice to go with vacuum secondary carbs, but in reality, unless you're building some uber-high reving engine the secondaries would likely never open, and if they did not very much.

    Looks would be impressive looking though.

    Lynn
     
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  9. jaracer
    Joined: Oct 4, 2008
    Posts: 2,419

    jaracer
    Member

    You are kind of all over the place here. While 2 4bl's look nice, you will have at least some driveablility problems. I don't think you will be happy with 4.11 gears and an automatic. On light acceleration it will be in high gear before you get across an intersection. Doesn't sound like the combination to have the wife go to the grocery store in.

    For a street machine I'd look at a 3X2 setup with Rochester carbs, Duntov cam, Porter mufflers and 3.25 to 3.50 rear gears. Now you have the sound, the look, limited driveability problems and it goes pretty well.
     
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  10. raven
    Joined: Aug 19, 2002
    Posts: 4,698

    raven
    Member

    Listen to beaner about the cam choice (and everything else). You will be much happier with the end result if you do.
    283 is a really small engine. You can look the part with the two fours and be able to drive it with the vacuum secondaries properly tuned. The Duntov copy is perfect for the little motor but is a real screamer when your foot is in it. Nice idle too.
    Or you could look for an L79 cam or a 300hp 327 cam. Any of those cams would be a nice choice. If you’re going to drive it as a daily, I wouldn’t suggest the power glide. Two speeds are not enough on the street in my opinion.
    r


    Sent from my iPhone using H.A.M.B.
     
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  11. olscrounger
    Joined: Feb 23, 2008
    Posts: 4,770

    olscrounger
    ALLIANCE MEMBER

    Duntov 097 cam, factory dual 4's-Chevy did it and they ran well. We did the same with a factory intake, 097 solid cam and two 500 Edelbrock carbs with adapters--it runs well.
    Basically a 57 270HP setup. The 097 solid cam will work oK with a stock converter-about 14" of vacuum and idle about 750. 30-30 a bit much in a 283 with an auto. The 097 has a lot of mid range and sounds good too.
     
    Last edited: Feb 28, 2020
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  12. @olscrounger os right on the money. If your going to build a 283 it can be done on the cheap. 097 cam is ideal. You can get a brand new copy of that grind from Speed Pro. Part number CS113r is a copy of the Duntov 097 cam. Use a good quality lifter. You can use off the shelf rebuilder cast pistons for a 283 but they will be way down in the hole. Deck the block to get the deck clearance at .025 down in the hole. Then Use a steel shin head gasket. SCE makes a 283 specific shim gasket that compresses at .015 giving you a total quench of .040, ideal for a small block. If you want to put 2 four barrels on it. Look for AFB carbs for a mid 60s 300 cubic inch Buick v8. They flow 400 cam each and will work much better than 500 cam Edelbrocks. You can actually buy those carbs remained from rock auto right now.
     
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  13. olscrounger
    Joined: Feb 23, 2008
    Posts: 4,770

    olscrounger
    ALLIANCE MEMBER

    Elgin makes a good 097 copy as well--have used a few in the past. We had good luck the the 500 edlebrocks but took some finessing to get them to run well. We then put the setup on a nasty 327 with Bullitt racing valve train and it really ran hard!! The 400 CFM carbs sound just right--very similar CFM to the WCFBs that came on them when new I think--still have an intake and a pair of WCFB's in the attic.
     
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  14. bowie
    Joined: Jul 27, 2011
    Posts: 3,098

    bowie
    ALLIANCE MEMBER

    That engine would really benefit from a 4 speed, T10 or Muncie.
     
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  15. Blues4U
    Joined: Oct 1, 2015
    Posts: 7,589

    Blues4U
    Member
    from So Cal

    I believe @FlynBrian used dual Edelbrock 500's on the 283 in the 34 roadster he built, he said it ran great, it sure sounded good. I just adapted dual 2GC Rochesters to a dual quad manifold for my 283 and it runs damn good. My seat of the pants dyno says it has plenty of air flow for the cubic inch.

    IMG_7347.JPG

    My setup was inspired by @SamIyam who ran a modified single quad manifold to accept dual 2Gc's, he had real good results with it, I think this is it:
    ImageUploadedByH.A.M.B.1487896318.560901.jpg

    And at least 1 more Hamb member did much the same for the 283 in his Model A too, with great results. I think this is it here:
    DSCF1877.JPG
     
  16. X-cpe
    Joined: Mar 9, 2018
    Posts: 1,959

    X-cpe

    I seem to remember that the part number for a Chevrolet replacement hydraulic cam for 2/4 bbl 283's and 327's up to 300 hp. was the same. Maybe someone with access to an old parts book (Squirrel ?) can confirm or correct this.
     
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  17. fastcar1953
    Joined: Oct 23, 2009
    Posts: 3,567

    fastcar1953
    Member

     
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  18. jimmy six
    Joined: Mar 21, 2006
    Posts: 14,802

    jimmy six
    ALLIANCE MEMBER

    You don’t need anything than a stock 4 barrel cam if you don’t want one... A 245 hp was just that. Carter WCFB’s were under 500cfm but progressive linkage works well and easily available. I run dual quads on a 296” Y-Block with a stock cam and 3 speed automatic with no problems in 5 years.
    As I walk around car gatherings dual quads look the best on almost everything. Don’t get swayed .. . Good luck.
     
  19. let me know if you want to sell those wcfb’s or the whole thing. I’m currently looking for a pair to run on my 324 olds bound for a 32 sedan.
     
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  20. DDDenny
    Joined: Feb 6, 2015
    Posts: 19,144

    DDDenny
    Member
    from oregon

    Powerglides are for going to sleep, four speeds are for waking up!

    f7ab49b41a9f8e1e0a4e6471e438cd9a.jpg
     
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  21. Fordors
    Joined: Sep 22, 2016
    Posts: 5,373

    Fordors
    Member

    139B6E1B-75A2-4BD2-8292-1D90C4B59676.jpeg
    All info is from the 1971 edition of the book shown.
    The 3733431 cam was first used in the ‘57-‘59 185 horse 283, next the ‘63 and ‘66 195 horse, the ‘57 and ‘66 220 horse, the ‘58-‘61 230 horse, ‘57-‘61 245 horse, ‘57-‘59 250 horse, and lastly the ‘60-‘61 275 horse 283’s.
    Info on the so called 300 horse cam is a little sketchy-
    The 3896929 cam was in the ‘67-‘69 327/210, ‘69 327/235, ‘67-‘68 327/275, ‘62-‘65 327/300, and lastly the ‘67 327/300 Corvette, but the ‘66 327/300 Corvette had the 3733431 cam(?).
    Also some listings appear for a 3896930 cam, but I wonder if that was a casting number, just like with the 3736097 Duntov. BITD some guys thought the casting number on the cam was the part number and erroneously referred to the Duntov as the ‘098 camshaft.
     
  22. Edward E Scheib
    Joined: Feb 28, 2020
    Posts: 19

    Edward E Scheib

    What are your thoughts on a good sounding cam?
     
  23. DDDenny
    Joined: Feb 6, 2015
    Posts: 19,144

    DDDenny
    Member
    from oregon

    You do know that is not a criteria for choosing a camshaft......right!
     
  24. Fordors
    Joined: Sep 22, 2016
    Posts: 5,373

    Fordors
    Member

    I’d consult with a cam manufacturer and give him all the particulars of your combination (once you narrow those down) and get what they recommend. If it does have a lope to it then that’s a plus. A nice lope at idle might be cool but that’s not what you really need.
     
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  26. J. A. Miller
    Joined: Dec 30, 2010
    Posts: 2,057

    J. A. Miller
    ALLIANCE MEMBER
    from Central NY

    Displacement X RPM divided by 3456 was the formula I've always used. Same result you got with fewer steps.
     
  27. Edward E Scheib
    Joined: Feb 28, 2020
    Posts: 19

    Edward E Scheib

    O97 or 30-30?
     
  28. Fordors
    Joined: Sep 22, 2016
    Posts: 5,373

    Fordors
    Member

    30-30 is way too much cam for your engine, and even though it came in Corvettes Duntov did not design it.
     
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  29. buffaloracer
    Joined: Aug 22, 2004
    Posts: 816

    buffaloracer
    Member
    from kansas

    I don't know what kind of car you want to run this setup in, but if it weighs over 1500 pounds the power glide makes it a slug. Dual 4s and a Duntov cam in a 283 in a light car, with a 4 speed, with the right gears is a hoot.
    Pete
     
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  30. Slopok
    Joined: Jan 30, 2012
    Posts: 2,919

    Slopok
    Member

    Is your Dad or Grandfather still painting cars???;)
     

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