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What is a 57 283 Fuelie Head?

Discussion in 'The Hokey Ass Message Board' started by KidAgain, Sep 22, 2010.

  1. KidAgain
    Joined: Jan 4, 2009
    Posts: 91

    KidAgain
    Member

    What is the difference between a fuelie head (casting numbered) and a power pack head for 57 283?

    :rolleyes:
     
  2. 57tony31
    Joined: Jul 20, 2008
    Posts: 632

    57tony31
    Member
    from Woods

  3. i know the chamber design is different. i have a set of 59 fuelie heads that have an open chamber when compared to my power pack heads. hope that was the question.
     
  4. Stevie Nash
    Joined: Oct 24, 2007
    Posts: 2,999

    Stevie Nash
    Member

    Fuelie heads means it originally came with fuel injection, so they are rare. Hump heads have been called Fuelie heads, but it is a common mistake.
     

  5. Vandy
    Joined: Nov 15, 2009
    Posts: 368

    Vandy
    Member
    from L.A. Ca

    To much misinformation !!
    Chevy never made a Fuelie head or a Fuelie motor either. Chevy did install fuel injection on the hi HP motors that were available, however the option was rarely ordered as it had a reputation as troublesome. The Hi Performance heads seen on Fuelie equipped motors were not ever made only for that option. The early HP head never had a big chamber, it closely resembled the early 289 Ford chamber with a chamber pocket around the spark plug area.
     
  6. so what is a fulie head? i always thought that meant that the head was designed for fuel injection.
     
  7. Vandy
    Joined: Nov 15, 2009
    Posts: 368

    Vandy
    Member
    from L.A. Ca

    All Chevy heads made after 1987 were made for fuel injection. I had to add that. Before that = No Fuel injection heads were ever made. Most Chevy owners have not made big attempts to stay in touch with reality.
     
  8. dbradley
    Joined: Jan 6, 2007
    Posts: 1,036

    dbradley
    Member

    Here's the 'list' right out of NHRA tech inspection data for '57 Chevrolet: You'll notice that ALL V-8 heads are the SAME, be it 265 2bbl or 283 FI

    Head
    H.P. Disp. Gasket Cast

    140 235
    162 265 .018 3703523,3767460,3795896,3884520
    185 283 .018 3703523,3767460,3795896,3884520
    220 283 .018 3703523,3767460,3795896,3884520
    245 283 .018 3703523,3767460,3795896,3884520
    250 283 .018 3703523,3767460,3795896,3884520
    270 283 .018 3703523,3767460,3795896,3884520
    283 283 .018 3703523,3767460,3795896,3884520
     
  9. so why was i just able to find eight different casting numbers that apply to 1957?
    with one casting number, 3731539, specific to 1957 283 HP FI 283 CID?
     
    Last edited: Sep 22, 2010
  10. narlee
    Joined: Dec 7, 2009
    Posts: 240

    narlee
    Member

    Power Pack were the good heads until the double humps came out. Power Packs had 1.72 intakes and then the camel hump went to 1.94. in 1962.
     
  11. HEATHEN
    Joined: Nov 22, 2005
    Posts: 7,591

    HEATHEN
    Member
    from SIDNEY, NY

    I've seen that listing, and it has fucked up a lot of people. The real deal is------both the '57 220 hp 4 bbl engines and the 283 hp fuelie engines used the same head, the "539" casting. The 270 hp dual quad solid lifter engines used a different head casting (ending in "997", I think). All of the '57 heads had 1.72/1.50 valves, although the hipo engine valves were swirl polished.
     
  12. Truckedup
    Joined: Jul 25, 2006
    Posts: 3,864

    Truckedup
    Member

    Yes,but the 3795896 head first appeared around 1962 on the 283 and 250 hp 327???.Otherwords it's a replacement head for the early head??
     
  13. 54BOMB
    Joined: Oct 23, 2004
    Posts: 2,101

    54BOMB
    Member

    I think thats really funny :D
     
  14. JeffreyJames
    Joined: Jun 13, 2007
    Posts: 16,611

    JeffreyJames
    Member
    from SUGAR CITY

    You are awesome Heathen. Thanks for the info.
     
  15. Brad54
    Joined: Apr 15, 2004
    Posts: 6,011

    Brad54
    Member
    from Atl Ga

    That's the list of head castings that NHRA ALLOWS to be used on those engines. Those are not the head castings that originally came on those engines.

    I've got a set of '57 heads with the "fuelie" casting number... it's a different number than the other heads (2x4, Power Pack, etc.). I have not had a set of Power Pack heads to compare them to, but they ARE specific to FI engines.

    -Brad
     
  16. 3wLarry
    Joined: Mar 11, 2005
    Posts: 12,804

    3wLarry
    Member Emeritus
    from Owasso, Ok

    Is the "listing" you are referring to Car & Parts Catalog of Chevy V-8 Engine Casting Numbers 1955-93? If so I have that and am looking at it and it says the 3740997 head was used on Passenger 2x4 bc & 250hp F.I., 220, 245, 250, 270 hp Corvette, and Truck 4 bc 283's in '57.

    The 3731539 head was used on all 283's including Passenger 4bc and F.I., Corvette 283hp/283, and Truck.

    I'd like to know what differences there are in these two heads.
     
    kidcampbell71 likes this.
  17. HEATHEN
    Joined: Nov 22, 2005
    Posts: 7,591

    HEATHEN
    Member
    from SIDNEY, NY


    Yeah, all I can say is.....more misinformation. It can be difficult to know what to believe when looking at charts like that; you never know who put them together. I don't have a pair of 997s to look at, but I THINK (not guarantee) that they had an ultrasmall combustion chamber, similar to the '56 306 castings. Anyone that wants to argue about it without offering any proof, feel free---the older I get, the less I give a shit about such things.
     
  18. Ratroddude
    Joined: May 15, 2009
    Posts: 1,027

    Ratroddude
    BANNED

    So , kidagain , I guess this helps you out? , got it all strait now? crystal clear now?.... or are you like me and more confused than ever now? , I thought I knew a little about casting numbers ....never underestimate the power of the H.A.M.B.
     
  19. Here's the deal with any type of a list produced or book written about what used to be. Most if not all are flawed in one aspect or another.

    I don't have acess to one but someone must still have one and that would be the original list from 1957. That is the only way that you are going to find out for sure what it is that you want to know about what was offered on what combination was available.

    I do recall that there was a different head that were generally refered to as a fuelie head back then. Of course I wouldn't have been privey to the information until the mid to later '60s myself. The Ol' Man wasn't a chebby man and I recall him refusing to even tune one if he didn't know you real well.

    Anyway by the time I started fooling around with Chebbies what was called a Fuelie Head had ports that you could measure a difference from the power pac and thde combustion chamber was a little larger supposedly to unshroud the intake valve.

    I have no idea what the casting number is an older friend of mine had '57 Vette topend and showed me the difference.

    Now this is probably also flawed because I would have been about 15 at the time and that was a very long time ago.
     
  20. KidAgain
    Joined: Jan 4, 2009
    Posts: 91

    KidAgain
    Member

    LOL hesterically!

    I'm not sure which end of the distributor goes where now:eek:

    So will some really old dude (I'm pretty damn old myself, just don't know a damn thing) comment:

    Would it be better to use 57 fuelie heads on my 265 or the 57 power pack ones? Some casting charts show different numbers for them.

    According to http://www.jimsperformance.com/headchart.html

    the 283hp 283 heads (no reference to FI) was 3731539 and there were quite a number of castings listed as "1x4,2x4, FI Corvette". Maybe his list has some flaws?

    So can anyone tell me if there was something physically special about the 283hp heads or where they just the ones the put on the 283hp motor? That would seem dumb but doesn't mean at ain't the truth.


    PS I'd be happy to learn from a really "young" dude too.
     
    Last edited: Sep 22, 2010
  21. waldo53
    Joined: Jan 26, 2010
    Posts: 848

    waldo53
    Member
    from ID

    To answer the original question; ..... it depends.

    Here's a page out of the Master Parts Book.
    http://chevy.oldcarmanualproject.com/1929_57chevyparts/57cmpc0136.htm

    The "539" head was used in pass. cars with 4BC, and pass./Corv. w/F.I. AND the H.L. cam. (I'm assuming that's the Duntov solid lifter cam)

    The "997" head was used on dual 4BC cars without the H.L. cam and Corv. without F.I. and H.L. cam.

    Clear as mud now???
     
  22. All I can add is that the 997 heads that went on the 57 passenger cars with 283 and 2x4 carb set up are rare and expensive, I passed up a matched set priced at 3k, I am not there yet with having to have them because of the marking (one small tower) and a 997 number. The 1539's are plentiful and less expensive. Not much difference in performance as you would be even better stepping up to a 327 head. For use on the 265 check on here.There are some good threads on build ups of the 265. It will be worth doing some homework as the 265's had their own specific problems with oiling I believe.
     
  23. Andy
    Joined: Nov 17, 2002
    Posts: 4,608

    Andy
    Member

    Old Dude here.The 539 heads were used on both the 4bbl and the FI engines. The FI engines got pop up pistons. The 539 heads had a larger combustion chamber than the 997 heads so that worked with the pop ups in the FI engines. The 270 HP dual 4 engines used flat top pistons and got their compression from the small chamber heads. The 539 heads have the single triangle on top of the large rectangle. The 2x4 heads had two towers on top of the rectangle. I would run a 57 head over a 55-56 head as the ports are noticably bigger. I would prefer to run a 59 head as they have the cooling around the plugs.
     
  24. HEATHEN
    Joined: Nov 22, 2005
    Posts: 7,591

    HEATHEN
    Member
    from SIDNEY, NY

    There, Andy and I both said it.
     
  25. d2_willys
    Joined: Sep 8, 2007
    Posts: 4,101

    d2_willys
    Member
    from Kansas

    ok, this thread is borderline insane. Back in the day, the so called fuelie heads had 2.02" diameter intake valves, whereas the powerpak had 1.94" valves, and the 2bbl heads had 1.72" valves. This is what I recall from the early years. Casting numbers are just numbers to me, show me the valve size!
     
  26. Ratroddude
    Joined: May 15, 2009
    Posts: 1,027

    Ratroddude
    BANNED

    :):(:confused::mad::p;):D:eek::rolleyes::cool::eek:ok , now I think its as clear as....
     

    Attached Files:

  27. Kid again,

    So now we have lots of information and and his daughter mis-information for you to muddle through.

    On a small displacement engine my personal favorite was just a set of power pack heads. I have a '62 Corvette (in theory) 283 that I'm eventually going to build. I don't know if the heads are "fuelie heads" or not. They are what we always called power pac heads when I was a kid.

    My intention is to keep the displacment 292 or smaller. If I open it up and don't believe it will breath good enough for me I own a dremel tool.

    You are going to find that unless you just get a set of heads that don't breath at all you won't find any power that you can feel by the seat of your pants by choosing a specific casting number. All the casting numbers in the world are just no match for a man with a dremel and the will to use it. :D
     
  28. HEATHEN
    Joined: Nov 22, 2005
    Posts: 7,591

    HEATHEN
    Member
    from SIDNEY, NY

    Okay, this is the last post I'll make on this subject. ALL "powerpack" heads (named for the '56 265 and '57 283 powerpack engines they both first appeared on ) had 1.72 inch intake valves and 1.50 inch exhaust valves. "Fuelie" heads (named because they first showed up on the '61 315hp 283 'vette engine) started out with 1.94 inch intake valves and 1.50 inch exhaust valves. In (I think) 1964, the same castings were opened up to use 2.02 inch intake valves and 1.60 inch exhaust valves on the 365hp and 375hp 327s, and were also used in this form on the '65-'67 350hp 327s. The 275hp and 300hp 327s still used the 1.94/1.50 version of the same casting.
     
  29. aaggie
    Joined: Nov 21, 2009
    Posts: 2,531

    aaggie
    ALLIANCE MEMBER

    You can drive yourself crazy looking for the right casting numbers and spending lots of money to get them restored but unless your goal is a perfect numbers matching restoration, forget it and buy a new set of Aluminum big valve heads from Edelbrock or others and be done with it.

    As far as a 265 goes you can flow more air through almost any 350 stock head than it can use. Even at 7000RPM you can't flow better than a Vortec head.

    And yes, I'm an old guy....
     
  30. d2_willys
    Joined: Sep 8, 2007
    Posts: 4,101

    d2_willys
    Member
    from Kansas

    Heathen: Thank you for the clarification. I knew they made 2.02 FI heads somewhere in the 60's.
     

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