Carb recommendation help Slant 6

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1963dartgt

1963dartgt

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So i wanted my 11 year old boy to have some input on my motor rebuild. After looking at a ton of pictures he liked the way a 4bbl carb looked. Well im not one to shatter hopes and dreams so ive gathered parts they last couple of weeks(thanks FABO members). The motor is currently in the machine shop it'll end up at .030 over after i get it back ill measure piston depth and get head milled for the ballpark of 8.9-9.2:1 cr. Head is a later peanut plug head with 340 springs.Cam is an oregon cam new blank 2106r (specs 214/210 @ .050”, 254/254 adv, .444”/.434” lift, 108 lobe sep). Im gonna open up the stock exhaust outlet and put a 2.5"tti full exhaust on the car. The trans was rebuilt in the 90's when my great uncle had the car has a shift kit and unknown stall converter with only about 20k miles on it. Rear is an 8 3/4 unknown gears (2.76-2.94 for sure). Car is driven 60 mile round trip a day. Interstate speeds of 70-75 and back road crusing and 50-65. Sorry for the long post i didnt want to miss anything and thanks for the help on an all to often asked question. Id rather have good info before i spend the money on a new carb.
 
For good performance and easy of installation it's hard to beat a super six 2 bbl. You could get an aluminum manifold, change to a chrome 273 style air cleaner and it would look "racy".
If you are sold on the 4 bbl, I would do a 390 Holley or a small Edelbrock carb. Your engine base sounds good so you don't want to kill it with too much fuel. The object is to have a good running car that is fun to drive, not a bunch of problems that kill your joy. Once you get it running then you can make small changes to get some more performance.
Sorry I don't have specific part numbers to give you on carb choices.
 
Well the reason im going 4bbl my son is excited about it. He has autisim and is very detail oriented so i couldnt get away with a 2bbl if i tried. Im actually very excited as hes given up his hour of video games a day to research carbs from here and .org. I know about the edelbrock and the holley but he was also looking at something like a factory 4bb carb but he was disappointed he couldnt find something between 400-500 cfm. The holley is out of my price range new and id rather buy new or a good reman if possible. Thank you for the input.
 
Sounds like a great way to teach all the + and - of how we make decisions and why we choose what we choose.
 
Ok, any of the 65-66 Formula S Carter AFB are a good choice, auto or manual based on your car. These are small carbs with air valve secondary flaps. They were recommended by Direct Connection as first steps with a 4 Barrel conversion.
 
66fs said:
Sounds like a great way to teach all the + and - of how we make decisions and why we choose what we choose.
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While this is true to a point.I chose not to take this path for the simple reason that hes had the same routine for the last six or so years. He doesnt make decisions as they give him anxiety so he follows a set path. So hopefully to get him to open up more im letting him more or less take control of this project. My budget is pretty big as me and the wife have cancelled a bathroom remodel.His therapist feel this is a huge step in a great direction with something hes struggled with for most of his life. So if putting a 4bbl on a slant means a new cam,new rear gears,ported head then ill guide him in the right direction. So in all reality its a learning experience and a bonding experience. Sorry for the long post again but i felt i needed to explain the reason behind why the 4bbl was important.
 
I like your attitude! I just hope in the end the 4bbl doesn't disappoint or cause major problems for him, or you to figure out to get the end result. Good Luck
 
Think about a 3.55 for your 8 3/4. It will really help and not kill you on RPM. If you have 14 inch rims, it's almost required.
 
I was tossing around the idea between 3.23 or 3.55. Im slowly gathering parts for big bolt conversion and probably going 15" rims.
 
Holley 390. Edelbrock 500.
If you know Holleys go 390. If you know Ede's go with the 500.
 
Add electronic ignition and a free flowing exhaust.
Good to go. :)
 
Its got the gm 4pin hei conversion and the 2.5 inch exhaust in the shopping cart. I have a lead on a couple of early a headers. One set is a little spendy and the other set is unknown at the moment.
 
With the bump and compression and four barrel with 3.23-3.55 gears is a must. I run the edlebrock 500cfm avs but stock out of the box it was lean on primary side, stuck .89 jets with .68 rods leaned the secondaries to .83 used the silver springs, Also your going to have to recurve your dizzy when you up that compression, lighter mr.gasket springs and fbo limiter plate to take some timing out will get you in good performance and mileage and a snappy slant six!
 
1963dartgt said:
Well the reason im going 4bbl my son is excited about it. He has autisim and is very detail oriented so i couldnt get away with a 2bbl if i tried. Im actually very excited as hes given up his hour of video games a day to research carbs from here and .org. I know about the edelbrock and the holley but he was also looking at something like a factory 4bb carb but he was disappointed he couldnt find something between 400-500 cfm. The holley is out of my price range new and id rather buy new or a good reman if possible. Thank you for the input.
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I also have an autistic son and understand how hard it is sometimes to compromise with him once his mind is made up. I would be on the lookout for a good used or rebuild one on here or .org
 
oh I see you figured it out. Great, I have tried to get my son into helping me with his cars but he is not interested.... I usually try to help him with what he is into at the time.
Keep up the good work will be following
 
1963dartgt said:
Eddy it is, i can get a brand new in box for a little under $300.
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Check with Mancini Racing. They usually have factory reconditioned Edelbrock carbs. Don't know if they would have a 500 cm unit but you'd save 40% of so.
 
I couldnt find any on there. Ive been debating between the performer and the AVS2 carbs and havent decided yet. I do have a holley on the shelf in the garage but i cant find the list number anywhere. It seems fairly small iv got it labeled as a 72 dodge list number is 6290-1.
 
I had a 4.10 gear behind my /6 and it really woke it up! My tires were tall though and the effective gear ration was more like a 3.91. The car still had the Holley single throat and simple mods to the car over all. Never could blow up that dang thing lol 4800 was tops....
 
Cranky.… the same Cranky from the old Mopar style? Long tome no talk.... I am POd at what happened over there....
and on the subject of the post my most recent vehicle buy was an 85 D150 with a slant and (I was surprised too, expected a 904) a 727 under it.... I have a 70s forged crank slant on a stand that I am just starting to "scope out" a buildup of to go into that truck. so I'm interested in what is beings aid here in this thread, for that.
debating on just shaving head and block to up the compression to "advertised" (because in reality they are at least a point below when measured out) and a decent cam, also considering the buildup to support a mild blow thru turbo. "just because"..... weighing options still as I scope out parts available, and watching other people's builds they have done.... want to stay with a slant because "most others don't" and because "its what I have here" (I also have a 440 and a couple of 360 Mag's but no trans or mounts that are compatible with them, money spent there can be more spent building what I have)
 
1963dartgt said:
Well the reason im going 4bbl my son is excited about it. He has autisim and is very detail oriented so i couldnt get away with a 2bbl if i tried. Im actually very excited as hes given up his hour of video games a day to research carbs from here and .org. I know about the edelbrock and the holley but he was also looking at something like a factory 4bb carb but he was disappointed he couldnt find something between 400-500 cfm. The holley is out of my price range new and id rather buy new or a good reman if possible. Thank you for the input.
Click to expand...

Simple. Use the Edelbrock 500. It's an AFB. That's the same type they put on the Hyper Pack, it's just a modern version.
 
1963dartgt said:
I was tossing around the idea between 3.23 or 3.55. Im slowly gathering parts for big bolt conversion and probably going 15" rims.
Click to expand...

I consider the 3.55 the absolute minimum for a performance build. The slant six will like a 3.91 or 4.10 better since it's a small displacement engine.
 
Well as far as carb goes i scored the deal of the century in my mind. I was cruising through an estate sale digging through some tools in the garage when i happen to spot a holley poking its little fuel bowl out of a box. Picked it up and wouldnt you know it list 8007. The old mans widow said she'd take $25 dollars for it and i told her id give her $200. She wouldnt take it and argued with me for 20 min on the price. We finally settled on $50 and a smoked brisket. I feel bad because she wouldnt take my money but im gonna give it a shot if i dont like it ill buy an edelbrock and maybe give someone the same deal i got on the holley.
 
volaredon said:
Cranky.… the same Cranky from the old Mopar style? Long tome no talk.... I am POd at what happened over there....
and on the subject of the post my most recent vehicle buy was an 85 D150 with a slant and (I was surprised too, expected a 904) a 727 under it.... I have a 70s forged crank slant on a stand that I am just starting to "scope out" a buildup of to go into that truck. so I'm interested in what is beings aid here in this thread, for that.
debating on just shaving head and block to up the compression to "advertised" (because in reality they are at least a point below when measured out) and a decent cam, also considering the buildup to support a mild blow thru turbo. "just because"..... weighing options still as I scope out parts available, and watching other people's builds they have done.... want to stay with a slant because "most others don't" and because "its what I have here" (I also have a 440 and a couple of 360 Mag's but no trans or mounts that are compatible with them, money spent there can be more spent building what I have)
Click to expand...
Yup, one and the same! Sorry it took me so long to come back here but I'm usually hanging out on FBBO.....
 
Put this on it.

BIG BO.jpg
 
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