Welcome to Club Hot Rod!  The premier site for everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more. 

  •  » Members from all over the US and the world!
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and hundreds of thousands of posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

 

Thread: Running rich
          
   
   

Reply To Thread
Page 1 of 2 1 2 LastLast
Results 1 to 15 of 21
  1. #1
    djpritchard1 is offline CHR Member Visit my Photo Gallery
    Join Date
    Jun 2005
    Location
    Upstate
    Posts
    46

    Running rich

     



    I have a small block Ford that has several issues. The first that is it runs rich, and I can smell the gas that it's wasting when it's running. The other is that it bogs down when you step on it. It's running a Holley 650 4-barrel on it. It seems to bog when it's warm out, but it's a little more noticeable when it's cool out (below 60 degrees)

    Also, related to carburation, etc. - what will adding an Endelbrock manifold buy me? Is is more looks than performance? Also, I see several manifolds listed for the Ford 302 - which one is good for street use. Like the aluminum manifold to dress things up a bit - but also looking to see if I can get a little added performance.

    Dave
    Last edited by djpritchard1; 06-05-2005 at 06:50 PM.

  2. #2
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
    Join Date
    Jul 2003
    Location
    Madison
    Car Year, Make, Model: '67 Ranchero, '57 Chevy, '82 Camaro,
    Posts
    21,160

    Check the float levels, choke setting, jet sizes, idle screw settings. Holley's or an aftermarket carb for that matter, require calibration and tuning to work correctly on a particular vehicle.
    Yesterday is history, tomorrow is a mystery, Live for Today!
    Carroll Shelby

    Learning must be difficult for those who already know it all!!!!

  3. #3
    lt1s10's Avatar
    lt1s10 is offline CHR Member Visit my Photo Gallery
    Join Date
    Aug 2004
    Location
    rustburg,
    Car Year, Make, Model: 1997 CHEVY.S10 LT1-350
    Posts
    4,093

    Re: Running rich

     



    Originally posted by djpritchard1
    I have a small block Ford that has several issues. The first that is it runs rich, and I can smell the gas that it's wasting when it's running. The other is that it bogs down when you step on it. It's running a Holley 650 4-barrel on it. It seems to bog when it's warm out, but it's a little more noticeable when it's cool out (below 60 degrees)

    Also, related to carburation, etc. - what will a Endelbrock manifold buy me? Is is more looks than performance?

    Dave
    sounds like that carb. may be to big. drop the jets a few points and see if that helps. is the choke working.
    if you talk "Endelbrock manifold" into buying you anything id like to know about that. id like to get in on that. just joking djpritchard1. the manifold by itself want do you much good.
    Mike
    check my home page out!!!
    http://hometown.aol.com/kanhandco2/index.html




  4. #4
    djpritchard1 is offline CHR Member Visit my Photo Gallery
    Join Date
    Jun 2005
    Location
    Upstate
    Posts
    46

    lt1s10 - yeah - I kind of mis-worded it - actually corrected it, once you pointed that out.

    Hey, if I get Edelbrock to "buy" me a manifold, I'll give them some free advertisement on the side of my 1931 Model A

    Dave

  5. #5
    lt1s10's Avatar
    lt1s10 is offline CHR Member Visit my Photo Gallery
    Join Date
    Aug 2004
    Location
    rustburg,
    Car Year, Make, Model: 1997 CHEVY.S10 LT1-350
    Posts
    4,093

    Originally posted by djpritchard1
    lt1s10 - yeah - I kind of mis-worded it - actually corrected it, once you pointed that out.

    Hey, if I get Edelbrock to "buy" me a manifold, I'll give them some free advertisement on the side of my 1931 Model A

    Dave
    good luck, i never understood why we pay big bucks for hats, t-shirts and other stuff with co. names on them thats suppose to be trying to sell us something. when i was in bus. no body paid me for one of my hats. something is wrong with that pic. i know you'll give them some free advertisement on your 1931 Model A with those 300.00 valve covers you just bought.
    just like i do.
    Mike
    check my home page out!!!
    http://hometown.aol.com/kanhandco2/index.html




  6. #6
    FMXhellraiser's Avatar
    FMXhellraiser is offline CHR Member Visit my Photo Gallery
    Join Date
    Mar 2004
    Location
    Charlotte, NC
    Car Year, Make, Model: 46 Chrysler,49 Ford,66 F100,68 Lincoln
    Posts
    2,835

    Here is some info I got when looking into fixing up my 302... I got my info from people on here, from Edelbrock, and from Summit racing in case your wanting to know where my info is comming from. Anyways, 650 is too big for a 302. 302 uses, what 480cfm I think it is, so 500cfm is the right carb. I was going to get a 650 from Edelbrock and them and Summit told me not to that it's too big and I don't need it.
    Also, the best set up for street applications and to run from idle to 5500 rpms is the Edelbrock 500cfm performer series carb with the performer series manifold. Now what I would reccommend if you get a polished manifold is to spend a little tiny bit more money and get the endurashine I think it's called (it's their newest finish). What it is is it has a clear powder coat baked over it so you never have to polish it and it will never dull or yellow on you. I was going to get a polished one and do my own clear powder coating but saw that and thought that is easy and saves me time having to do it myself... To me that is worth it.
    Everytime I get info on either Holley or Edelbrock then this is what I hear and what I get.... Edelbrock is more for a street application where power is needed through all ranges and then Holley, etc is better or more for racing applications to fine tune everything, etc and Edelbrock carbs are already set up, etc....

    That is all I really know on this subject and if I went any further to answer your questions then I wont be 100% so I don't wanna give you false information. I have a friend with a 31 chevy that has a 350 in it and it's burning rich and smells like crazy and he is getting a new higher output I guess you can say, distributor and MSD ignition box to burn hotter.
    Well hope this helped and good luck!
    Good luck!
    www.streamlineautocare.com

    If you wan't something done right, then you have to do it yourself!

  7. #7
    NTFDAY's Avatar
    NTFDAY is offline CHR Member Visit my Photo Gallery
    Join Date
    Aug 2003
    Location
    Springfield
    Car Year, Make, Model: '66 Mustang, 76 Corvette
    Posts
    5,334

    I'm running a 650 double pumper on the 289 in my Mustang with a 286 Comp cam and headers. Buy a Holley rebuild book and follow their advice on the primary squirters and drop the primary jets to 62 and the secondary jets no bigger than 66. Do the ignition upgrades as mentioned in earlier posts, get it timed properly and adjust the carb with a vacuum guage.
    Ken Thomas
    NoT FaDe AwaY and the music didn't die
    The simplest road is usually the last one sought
    Wild Willie & AA/FA's The greatest show in drag racing

  8. #8
    djpritchard1 is offline CHR Member Visit my Photo Gallery
    Join Date
    Jun 2005
    Location
    Upstate
    Posts
    46

    So - is my 850 CFM too big for my little old 302? I'm getting mixed signals. It would be a shame to have to invest in another carb - but if it's too big - then it's too big, and I wanna make it right. It does seem to be running unusually rich. I've been out of this "motor head" stuff for a bit - and was really surprised to find out that these Holley carbs go almost five bills!

    Anyone else out there running an 850 CFM on a 302 - and I don't have any fancy cam or anything like that.

    Thanks in advance,

    Dave

  9. #9
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
    Join Date
    Jul 2003
    Location
    Madison
    Car Year, Make, Model: '67 Ranchero, '57 Chevy, '82 Camaro,
    Posts
    21,160

    Which carb do you have?? In your first post on this thread you said it was a 650 carb. An 850 is way too much carb for a 302.
    Yesterday is history, tomorrow is a mystery, Live for Today!
    Carroll Shelby

    Learning must be difficult for those who already know it all!!!!

  10. #10
    FMXhellraiser's Avatar
    FMXhellraiser is offline CHR Member Visit my Photo Gallery
    Join Date
    Mar 2004
    Location
    Charlotte, NC
    Car Year, Make, Model: 46 Chrysler,49 Ford,66 F100,68 Lincoln
    Posts
    2,835

    850 is way to big and even a 650 is too big. A mild little 302 should be on 500 cfm.. 550 the most.
    www.streamlineautocare.com

    If you wan't something done right, then you have to do it yourself!

  11. #11
    djpritchard1 is offline CHR Member Visit my Photo Gallery
    Join Date
    Jun 2005
    Location
    Upstate
    Posts
    46

    Dave - you're correct, and I thought I had the smaller carb, but after taking the winter off from tinkering, I started documenting things. It is truely an 850 CFM. What was stuck in my mind was what the fella had told me when I purchased it - I just never really verified it. I was "walkin' on air" that day - so a lot of things went in one ear and out the other.

    Definitely finding out a lot of things with this new venture. I actually purchased it late last fall, and due to a busy work schedule (and the damaged garage door - long story there - didn't help matters) I didn't get to do much tinkering. I'll be a little smarter on my next purchase - but I pulled the trigger quickly - and I still think I bought it for a reasonable price. There is a solid base to work on - and I didn't really just want to get something that was all decked out. What's the fun in that?

    Sound like the message is - get a smaller carb. Now that comes after I get a new raditor and dress up the engine comparment. I may try to do a swap or bartering with someone. I also may just run it rich for a month or so.

    Thanks,

    Dave
    Last edited by djpritchard1; 06-06-2005 at 02:56 PM.

  12. #12
    FMXhellraiser's Avatar
    FMXhellraiser is offline CHR Member Visit my Photo Gallery
    Join Date
    Mar 2004
    Location
    Charlotte, NC
    Car Year, Make, Model: 46 Chrysler,49 Ford,66 F100,68 Lincoln
    Posts
    2,835

    Sell it on ebay and use the money to buy a 500cfm and then you will most likely have money left over... heh 850 on a 302... that is HUGE!
    www.streamlineautocare.com

    If you wan't something done right, then you have to do it yourself!

  13. #13
    NTFDAY's Avatar
    NTFDAY is offline CHR Member Visit my Photo Gallery
    Join Date
    Aug 2003
    Location
    Springfield
    Car Year, Make, Model: '66 Mustang, 76 Corvette
    Posts
    5,334

    I wouldn't go any bigger than a 600 Edlebrock or Holley and which one would depend on cam and intake manifold.
    Ken Thomas
    NoT FaDe AwaY and the music didn't die
    The simplest road is usually the last one sought
    Wild Willie & AA/FA's The greatest show in drag racing

  14. #14
    djpritchard1 is offline CHR Member Visit my Photo Gallery
    Join Date
    Jun 2005
    Location
    Upstate
    Posts
    46

    Any recommendations on names of good books for rebuilding Holley carbs. There is mention of a "Performance" book and then a general comment about a book on carb rebuilding.

    THanks

    Dave

  15. #15
    techinspector1's Avatar
    techinspector1 is offline CHR Member Visit my Photo Gallery
    Join Date
    May 2003
    Location
    Zephyrhills, Florida, USA
    Car Year, Make, Model: '32 Henway
    Posts
    12,423

Reply To Thread
Page 1 of 2 1 2 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Links monetized by VigLink