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  Which Carb for 347 Stroker

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Author Topic:   Which Carb for 347 Stroker
Barry70Stang
Gearhead

Posts: 306
From: West Monroe, La USA
Registered: Jan 2006

posted 06-22-2006 06:13 PM     Click Here to See the Profile for Barry70Stang        Reply w/Quote
Need some input fellows,

What carburetor do you reccommend me put on my 347 stroker motor? My mechanic buddy is a Holley man, but feels like the Edelbrock is more reliable. He thinks I need something around 750 cfm. I have AFR 185 heads. His thoughts are the holley will give you about a second better time at the track, but the Edelbrock will be hassle free for years to come. I'm building the engine for street/occasional strip. Please give me some feedback.

Thanks,
Barry

Moneymaker
Administrator

Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 06-22-2006 07:29 PM     Click Here to See the Profile for Moneymaker        Reply w/Quote
Holley 770 Avenger will do very nicely.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First NHRA & IHRA 289 automatic Superstock Mustang in the TENS 06-99
First SS/MA in the TENS 04-03
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28

The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

68mustang351w
Gearhead

Posts: 558
From: San Jose, Ca
Registered: Sep 2004

posted 06-22-2006 08:03 PM     Click Here to See the Profile for 68mustang351w        Reply w/Quote
If its mostly street I would personally go with something a lot smaller. Maybe around 600cfm. You should get better lower end and better throttle response. Now if it was mostly strip, then yeah bigger is better... David F.

Barry70Stang
Gearhead

Posts: 306
From: West Monroe, La USA
Registered: Jan 2006

posted 06-22-2006 08:16 PM     Click Here to See the Profile for Barry70Stang        Reply w/Quote
Thanks for the replies men,

I'm not real clear on why the smaller carb will give better throttle response. If I went with the smaller carb, would I be severely limiting the cars potential?

Barry

Dubz
Gearhead

Posts: 2005
From: Manitoba Canada
Registered: Oct 2002

posted 06-22-2006 08:28 PM     Click Here to See the Profile for Dubz        Reply w/Quote
I chose a 670cfm avenger holley for my 351W, but it's mostly stock, with the afr heads you have, i would say a 750+ such as your buddy mentioned, or the 770 Avenger Alex mentioned. The avenger is a vac secondary, which also could allow you to run a bigger carb than you need without hindering performace.

Most holleys don't need adjusting once dialed in, so i'd go that route, as the edelbrocks are proven to be an inferior carb for performance, where as there isn't really proof to say you need to fiddle with a holley.

[This message has been edited by Dubz (edited 06-22-2006).]

Mpcoluv
Gearhead

Posts: 1421
From: Charlotte NC usa
Registered: Apr 2001

posted 06-22-2006 08:44 PM     Click Here to See the Profile for Mpcoluv        Reply w/Quote
Not that I am a carb guru, but I have had good luck with a 700 double pumper on 350 or so motors....

Vinyl66
Journeyman

Posts: 27
From: Suwanee
Registered: May 2006

posted 06-22-2006 11:19 PM     Click Here to See the Profile for Vinyl66        Reply w/Quote
I am right on the verge of breaking into the 11's with my mildly built 347 in my '66 Mustang Coupe. I also have AFR 185's and I am running a Demon 650 vacuum secondary carb. That being said, I would go with a 750 or 770 VS carb for a mostly street and some strip action. That way you know you have plenty of airflow for your engine.

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1966 Mustang Coupe, Vinyl Top, 347 w/650VS, Pro Products Air Gap, AFR185's, Comp XE274H, Hooker headers, Flowmasters, C4, 3.55's, 215/60 14 Drag Radials, 12.12 @109.

kcode
Gearhead

Posts: 3415
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99

posted 06-22-2006 11:24 PM     Click Here to See the Profile for kcode        Reply w/Quote
I stated with a BG 650 on my 347, could not get rid of the over rich idle and poor performance even with BG tech help. Went with a Quick Fuel Technology 750 dp four year ago and have not regrets. QFTs look like Holleys only better. The owners of the company are x-Holley engineers, one of them was the designer of the HP series.

------------------
Mike Golliver
MCA Gold Card Judge-Modifieds
65 Kcode coupe 347 stroker modified 5-speed MCA Retired
66 convertible-3 dueces and a 5-speed with a 289
01 Mustang GT Convt
05 F-150 4x4 CrewCab

Barry70Stang
Gearhead

Posts: 306
From: West Monroe, La USA
Registered: Jan 2006

posted 06-22-2006 11:37 PM     Click Here to See the Profile for Barry70Stang        Reply w/Quote
Good info Concensus seems to be going with the 750-770 range. I'm chomping at the bit to get started on this project, the friend (buddy that's a mechanic)that is going to help me has had to delay us getting started because he is really busy at his shop. I've got most of the major components that I need. The machine shop is going to do most of the engine work.

Barry

Barry70Stang
Gearhead

Posts: 306
From: West Monroe, La USA
Registered: Jan 2006

posted 06-23-2006 11:41 PM     Click Here to See the Profile for Barry70Stang        Reply w/Quote
Well, the Holley Street Avenger 770 it is, just ordered from Jegs, along with a set of tall valve covers, and MSD ignition and coil Hopefully I'll get all this stuff in before the little MRS. figures out what's going on

Barry

capri man
Gearhead

Posts: 8777
From: doerun, ga.
Registered: Nov 2000

posted 06-24-2006 12:20 AM     Click Here to See the Profile for capri man        Reply w/Quote
quote:
Originally posted by Barry70Stang:
Well, the Holley Street Avenger 770 it is, just ordered from Jegs, along with a set of tall valve covers, and MSD ignition and coil Hopefully I'll get all this stuff in before the little MRS. figures out what's going on

Barry



throw away the boxes!! they notice new boxes but they dont notice new parts laying around!!!!

------------------
mike r
racing is real
everything else is just a game.
81 capri-302-7.25 @93mph 1/8
1.54 60ft 50 % of the fun dragracing is meeting people who will give you the shirt off their back to wipe the grease off your hands.
M&M member #839 http://i2.photobucket.com/albums/y6/mike470/adel2.jpg

steve'66
Gearhead

Posts: 9835
From: Sonoma,CA,USA
Registered: Mar 2000

posted 06-24-2006 03:04 AM     Click Here to See the Profile for steve'66        Reply w/Quote
quote:
Originally posted by capri man:

throw away the boxes!! they notice new boxes but they dont notice new parts laying around!!!!

EXCELLANT ADVICE!! And very true.

SteveW

Barry70Stang
Gearhead

Posts: 306
From: West Monroe, La USA
Registered: Jan 2006

posted 06-24-2006 08:12 AM     Click Here to See the Profile for Barry70Stang        Reply w/Quote
Gotta train the Fedex and UPS men to put those boxes somewhere other than where she has to trip over them to get in the house.

Barry

Bloose
Gearhead

Posts: 888
From: Milwaukee, WI
Registered: Dec 2001

posted 06-25-2006 05:36 PM     Click Here to See the Profile for Bloose        Reply w/Quote
My UPA, Fed ex, and USPS people put my packages in my Jeep parked in the driveway.

B

Fastymz
Moderator

Posts: 22791
From: Reno Nv M&M #1240
Registered: Apr 2001

posted 06-25-2006 05:37 PM     Click Here to See the Profile for Fastymz        Reply w/Quote
quote:
Originally posted by Barry70Stang:
Gotta train the Fedex and UPS men to put those boxes somewhere other than where she has to trip over them to get in the house.

Barry


Thats what work is for

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