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Need help choosing a carburetor for a street 440 #1159578 01/17/12 08:38 PM 01/17/12 08:38 PM
Joined: Apr 2004 Posts: 323 Raleigh, NC Meangreen68 OP enthusiast
Meangreen68 OP enthusiast Joined: Apr 2004 Posts: 323 Raleigh, NC	Looking for advice on choosing the right carb for my rebuilt 440. It's a 440 quench motor, deck height 10.7109", 3.9" offset-ground factory crank, 6.89" Manley I-beams, Edelbrock 84cc aluminum heads, Diamond flat-tops ch 1.865", Engle K60/62 hyd cam, 727 auto, 3.55 rear, TTI 1-7/8" headers, and I'm after low-end torque. It's around 465 cubic inches. I have a new Weiand 7500 intake that I would like to use. This is a street motor. I imagine it would be either a manual or electric choke. The machining was done by Mike Chenoweth in 2004 and it's still in the crate: http://www.kufrin.biz/1968Charger Once assembled I would like to deliver it to a Mopart's member to have it broken in and tuned on a bench dyno. So I could use some suggestions as to who is available on the east coast. I'm willing to have it assembled by them if it's their policy. Piston rings need to be fitted and Smith Bros. pushrods need to be ordered. I can also use some help selecting a good torque converter. Thanks, John

Re: Need help choosing a carburetor for a street 440 [Re: Meangreen68] #1159579 01/17/12 08:44 PM 01/17/12 08:44 PM
Joined: Nov 2007 Posts: 21,819 Kirkland, Washington Pacnorthcuda Too Many Posts
Pacnorthcuda Too Many Posts Joined: Nov 2007 Posts: 21,819 Kirkland, Washington	If you're not after every last top end HP then a Holley 750 Vacuum Secondary would suit well.

Re: Need help choosing a carburetor for a street 440 [Re: Pacnorthcuda] #1159580 01/17/12 09:13 PM 01/17/12 09:13 PM
Joined: Nov 2008 Posts: 671 Wisconsin USA B Bill MeLater mopar
Bill MeLater mopar B Joined: Nov 2008 Posts: 671 Wisconsin USA	Holley 850

Re: Need help choosing a carburetor for a street 440 [Re: Pacnorthcuda] #1159581 01/17/12 09:14 PM 01/17/12 09:14 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Quote: If you're not after every last top end HP then a Holley 750 Vacuum Secondary would suit well. I agree. And little tuning and adding the secondary metering block it would be a very good street carb Clean it, if it's Dirty. Oil it, if it Squeaks. But: Don't fix it, if it Works!

Re: Need help choosing a carburetor for a street 440 [Re: MoparforLife] #1159582 01/17/12 09:30 PM 01/17/12 09:30 PM
A Anonymous Unregistered
Anonymous Unregistered A	AED a sponsor here is the best deal on a handbuilt proper carb for any application--please call them before you buy

Re: Need help choosing a carburetor for a street 440 [Re: ] #1159583 01/17/12 09:42 PM 01/17/12 09:42 PM
Joined: Apr 2004 Posts: 323 Raleigh, NC Meangreen68 OP enthusiast
Meangreen68 OP enthusiast Joined: Apr 2004 Posts: 323 Raleigh, NC	I can't thank you guys enough. Should I wait on purchasing the torque converter until I have some bench dyno numbers? The engine is going into a '68 Charger.

Re: Need help choosing a carburetor for a street 440 [Re: Meangreen68] #1159584 01/17/12 09:47 PM 01/17/12 09:47 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	I'd suggest as mentioned a 750ish Holley but one of the Holley clones that has adjustable systems so you can get it spot on & not leave anything on the table live every 24 hour block of time like it's your last day on earth

Re: Need help choosing a carburetor for a street 440 [Re: Meangreen68] #1159585 01/17/12 10:21 PM 01/17/12 10:21 PM
Joined: Feb 2005 Posts: 4,311 Prospect, PA BSB67 master
BSB67 master Joined: Feb 2005 Posts: 4,311 Prospect, PA	Changing nothing that you listed: 950 hp if it's in your budget. If not, a 850 DP. Don't skimp on a converter. You'll have to decide what you like as far as stall.

Re: Need help choosing a carburetor for a street 440 [Re: Meangreen68] #1159586 01/17/12 10:36 PM 01/17/12 10:36 PM
Joined: May 2008 Posts: 5,399 Aurora, Colorado 451Mopar master
451Mopar master Joined: May 2008 Posts: 5,399 Aurora, Colorado	I just bought a Holley Ultra Street Avenger for my 440 stroked to 500" (I know it's small, but it's a street car.) I thought it would have screw-in restrictors in the billet metering blocks, but it has pressed in restrictions. I could have saved some money with just the aluminum street avenger, but the ultra does look nice (avaliable in red, blue and black)

Re: Need help choosing a carburetor for a street 440 [Re: Meangreen68] #1159587 01/17/12 10:36 PM 01/17/12 10:36 PM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar Looking for fun? Keep looking
MidPenMopar Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	Hi John Ive got a nice 750 Holley that's a dual feed single pump if you are interested?

Re: Need help choosing a carburetor for a street 440 [Re: MidPenMopar] #1159588 01/17/12 10:46 PM 01/17/12 10:46 PM
A Anonymous Unregistered
Anonymous Unregistered A	Holley's 750 3310 is perfect for a street driver 440. Get the trick kit (are they still available?) or just the spring set and tune the secondary's where they open to your liking. I always found the jetting in the primary side (72 or 74 IIRC) to be pretty much spot on for a mild 440. Get the throttle extension lever 20-7 for Mopar applications and the Fabulous Fabrication fuel lines and they practically fall into place! 7023993-newfuelline.JPG (109 downloads)

Re: Need help choosing a carburetor for a street 440 #1159589 01/18/12 12:18 AM 01/18/12 12:18 AM
Joined: Apr 2004 Posts: 323 Raleigh, NC Meangreen68 OP enthusiast
Meangreen68 OP enthusiast Joined: Apr 2004 Posts: 323 Raleigh, NC	The last request is finding a Mopar engine shop with a bench dyno. Early March time-frame is what I'm figuring. That puts the weather, not so bad north of the Carolina's where I live, and south to Florida. Anyone with any leads, please chime in. Moparts rocks!

Re: Need help choosing a carburetor for a street 440 #1159590 01/18/12 04:38 AM 01/18/12 04:38 AM
Joined: May 2008 Posts: 5,399 Aurora, Colorado 451Mopar master
451Mopar master Joined: May 2008 Posts: 5,399 Aurora, Colorado	gy3 - I like the fuel line setup Is that custom or where can I buy one?

Re: Need help choosing a carburetor for a street 440 [Re: Bill MeLater] #1159591 01/18/12 12:14 PM 01/18/12 12:14 PM
Joined: Oct 2003 Posts: 3,698 NE Oklahoma V Von master
Von master V Joined: Oct 2003 Posts: 3,698 NE Oklahoma	Quote: Holley 850 The fuel curve on a stock 850 will be pretty close for you.... The fuel curve on a 950 is generally pig fat on the lower end for a 440. If you have a AFR gauge and time to tinker a 950 might be OK...but you will have to invest some time in tinkering with it. Throttle response a hair better with a 950 over the 850 though. 72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.

Re: Need help choosing a carburetor for a street 440 [Re: Meangreen68] #1159592 01/18/12 03:33 PM 01/18/12 03:33 PM
Joined: Jan 2010 Posts: 27 Michigan F fiddlerfingers member
fiddlerfingers member F Joined: Jan 2010 Posts: 27 Michigan	Check out http://bigsperformance.com/ they build some awesome carbs. Tell them what cam, headers ect and he will have the data in his files to build you a carb that is practically out of the box correct.

Re: Need help choosing a carburetor for a street 440 [Re: fiddlerfingers] #1159593 01/18/12 05:08 PM 01/18/12 05:08 PM
Joined: Apr 2004 Posts: 323 Raleigh, NC Meangreen68 OP enthusiast
Meangreen68 OP enthusiast Joined: Apr 2004 Posts: 323 Raleigh, NC	I drove down to Willow Spring, NC this morning to visit Doc Bilbrey. He's going to help me get the engine together and run on his dyno. He likes the 950hp carb, but I'll send him a link to the comments posted here about one. He said not to use the TTI 1-7/8" headers on break-in but to buy a set of Hooker headers and he'll provide the 18mm bungs for the a/f sensors. He had headers for the 440 but the tubes were over 2-1/4" in diameter. He's going to fit me in mid-March which gives me time to collect the remaining parts like the carb, aluminum water pump housing, ATI damper, and a distributor. He doesn't mind me helping out either, which is cool. Doc said he was semi-retired but looking in his engine room, he had no less than 11 engine projects going on.

Re: Need help choosing a carburetor for a street 440 [Re: Meangreen68] #1159594 01/18/12 06:08 PM 01/18/12 06:08 PM
Joined: May 2008 Posts: 5,399 Aurora, Colorado 451Mopar master
451Mopar master Joined: May 2008 Posts: 5,399 Aurora, Colorado	Quote: I drove down to Willow Spring, NC this morning to visit Doc Bilbrey. He's going to help me get the engine together and run on his dyno. He likes the 950hp carb, but I'll send him a link to the comments posted here about one. He said not to use the TTI 1-7/8" headers on break-in but to buy a set of Hooker headers and he'll provide the 18mm bungs for the a/f sensors. He had headers for the 440 but the tubes were over 2-1/4" in diameter. He's going to fit me in mid-March which gives me time to collect the remaining parts like the carb, aluminum water pump housing, ATI damper, and a distributor. He doesn't mind me helping out either, which is cool. Doc said he was semi-retired but looking in his engine room, he had no less than 11 engine projects going on. 950 is a good carb for power, and pretty decent on the street. If your car is more a weekend toy it will work good. If the car is a daily driver then a smaller carb with choke would be a better choice for easier driving in cold weather, and to get into the main jet circuitry sooner at low speed to improve fuel mileage. I never have used a proform carb, but I was looking at the jegs catalog and they have a 750 cfm vacuum secondary carb with all the goodies like notched rear float and jet extentions, and screw-in air bleads and restrictions for $430.

Re: Need help choosing a carburetor for a street 440 [Re: Von] #1159595 01/18/12 09:03 PM 01/18/12 09:03 PM
Joined: Feb 2005 Posts: 4,311 Prospect, PA BSB67 master
BSB67 master Joined: Feb 2005 Posts: 4,311 Prospect, PA	Quote: Quote: Holley 850 The fuel curve on a stock 850 will be pretty close for you.... The fuel curve on a 950 is generally pig fat on the lower end for a 440. If you have a AFR gauge and time to tinker a 950 might be OK...but you will have to invest some time in tinkering with it. Throttle response a hair better with a 950 over the 850 though. This about sums it up IMO. However, I'm curious, is there something that the 950 is not pig fat on in in low rpm and transition? The 950 will be similar to the 750 for response, once the IFR is adjusted.

Re: Need help choosing a carburetor for a street 440 [Re: 451Mopar] #1159596 01/18/12 09:52 PM 01/18/12 09:52 PM
A Anonymous Unregistered
Anonymous Unregistered A	Quote: gy3 - I like the fuel line setup Is that custom or where can I buy one? Greg at Fabulous Fabrications. Sorry, I don't have a number or address handy but they advertise in Mopar Collectors Guide.

Re: Need help choosing a carburetor for a street 440 [Re: BSB67] #1159597 01/19/12 12:06 AM 01/19/12 12:06 AM
Joined: Oct 2003 Posts: 3,698 NE Oklahoma V Von master
Von master V Joined: Oct 2003 Posts: 3,698 NE Oklahoma	[quote However, I'm curious, is there something that the 950 is not pig fat on in in low rpm and transition? Porter told me that box stock 950 metering systems are pretty close on the usual run of the mill SBC builds.... 72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.

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