Carb for a 347 Stroker?? - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 09-22-2008, 06:36 PM
Old Pony's Avatar
Registered User
 
Last photo:
Join Date: Jul 2008
Location: Oswego, IL
Posts: 35
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Carb for a 347 Stroker??

Im building a 347 stroker thatll produce about 400 HP. Ive got all sorts of opinions on carbs for it from the 650 Holley 4150 HP, to a Thunder Series AVS Edelbrock 800. I need to call upon the voices of experience. If it was my motor Id use a .
Thanks guys!!

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 09-22-2008, 09:24 PM
curtis73's Avatar
Hates: Liver. Loves: Diesel
 
Last wiki edit: How to find cheap parts
Last journal entry: Found an LQ9 today
Last photo:
Join Date: Dec 2005
Location: Carlisle, PA
Age: 41
Posts: 5,173
Wiki Edits: 16

Thanks: 7
Thanked 9 Times in 6 Posts
If it were my motor I would use a Qjet. No, seriously, I would. Second choice would be a Holley vac sec 600.

Here's the breakdown. A 347 at 90% VE and 6000 rpms will ingest 542 CFMs. Anything more than 600 and you're giving up torque, throttle response, tunability, and drivability for no measurable increase in HP.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 09-22-2008, 10:12 PM
Rustydawg's Avatar
Cruzin w/Elvis in Bigfoots UFO
 
Last photo:
Join Date: Nov 2004
Location: Edmonton AB, Great White North
Age: 49
Posts: 248
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
If it were my motor (and someone else was footing the bill) I'd put EFI on it.

If it's sitting in a light chassis with a manual transmission and 3.90s I'd put a 650 mech secondary on there.

But don't listen to me, I could be a crackhead that can still type OK. Call some of the carb makers' tech lines, be honest about what you've got and see what they have to say.

There are significant benefits to a mechanical secondary carb - it can make for a reduced pressure drop across the carburetor and greater cylinder filling so long as your engine and gearing work with it. That's the key.

Send a PM to the Barry Grant tech fellow on this board and he can suggest something - just include all the details about your ride.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 09-22-2008, 10:32 PM
j.d.brown.042964's Avatar
406 Caprice:Rust Never Sleeps!
 
Join Date: Jun 2007
Location: St.Clair County,Alabama.
Age: 50
Posts: 278
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
A Q-jet would be a nice touch to a Ford motor-wouldn't it? If nothing else it would probably give you the best chance at anything resembling mpg's, due to the fact that they'll only deliver what the engine can utilize. Definitely a point to consider with todays fuel prices!-Jim
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 09-22-2008, 11:16 PM
Registered User
 
Last photo:
Join Date: Mar 2008
Location: Ringgold, Ga.
Posts: 461
Wiki Edits: 0

Thanks: 1
Thanked 17 Times in 16 Posts
Quote:
Originally Posted by Old Pony
Im building a 347 stroker thatll produce about 400 HP. Ive got all sorts of opinions on carbs for it from the 650 Holley 4150 HP, to a Thunder Series AVS Edelbrock 800. I need to call upon the voices of experience. If it was my motor Id use a .
Thanks guys!!
I've built quite a few 347's. The tamest one was 430HP w/440 ft.lbs. of torque! Cast iron Street Heat heads with just port matching. 292H Comp Cams hydraulic cam, Victor Jr. intake and a 750 Holley Double Pumper. Very relaible street combination also....
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 09-23-2008, 01:49 AM
curtis73's Avatar
Hates: Liver. Loves: Diesel
 
Last wiki edit: How to find cheap parts
Last journal entry: Found an LQ9 today
Last photo:
Join Date: Dec 2005
Location: Carlisle, PA
Age: 41
Posts: 5,173
Wiki Edits: 16

Thanks: 7
Thanked 9 Times in 6 Posts
Quote:
Originally Posted by j.d.brown.042964
A Q-jet would be a nice touch to a Ford motor-wouldn't it? If nothing else it would probably give you the best chance at anything resembling mpg's, due to the fact that they'll only deliver what the engine can utilize. Definitely a point to consider with todays fuel prices!-Jim
Ford used a spreadbore for a while with the 4MV carb.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 09-23-2008, 01:53 AM
curtis73's Avatar
Hates: Liver. Loves: Diesel
 
Last wiki edit: How to find cheap parts
Last journal entry: Found an LQ9 today
Last photo:
Join Date: Dec 2005
Location: Carlisle, PA
Age: 41
Posts: 5,173
Wiki Edits: 16

Thanks: 7
Thanked 9 Times in 6 Posts
Quote:
Originally Posted by Rustydawg
Call some of the carb makers' tech lines, be honest about what you've got and see what they have to say.
With all due respect, that is like calling the phone company and saying, "you choose the plan that is best for me," or asking a used car salesman to "pick whatever car he thinks is best."

They will provide all kinds of tech info to steer you into the polished 9000000 CFM wonder carb that is the newest thing.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 09-23-2008, 05:33 AM
RippinRon's Avatar
Member
 
Last photo:
Join Date: Jun 2004
Location: Thornbury, Ontario
Age: 34
Posts: 948
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Ford also used a q-jet on the 429 SCJ!
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 09-23-2008, 09:33 AM
Rustydawg's Avatar
Cruzin w/Elvis in Bigfoots UFO
 
Last photo:
Join Date: Nov 2004
Location: Edmonton AB, Great White North
Age: 49
Posts: 248
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by curtis73
With all due respect, that is like calling the phone company and saying, "you choose the plan that is best for me," or asking a used car salesman to "pick whatever car he thinks is best."

They will provide all kinds of tech info to steer you into the polished 9000000 CFM wonder carb that is the newest thing.
Yup, you could get a guy that tries to shyster you into an expensive carb that you don't need. You take that chance. My experience is that the tech folk on the phone is a tech folk, not a salesman.

I would bet that the customer gets themselves in over their head on camshaft or carburetor choice more times than can be blamed on the tech support fellow. They're not on commission.

Calling a mail order warehouse may be a different matter. I would steer one towards the manufacturer's 1-800 support.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 09-23-2008, 10:56 AM
curtis73's Avatar
Hates: Liver. Loves: Diesel
 
Last wiki edit: How to find cheap parts
Last journal entry: Found an LQ9 today
Last photo:
Join Date: Dec 2005
Location: Carlisle, PA
Age: 41
Posts: 5,173
Wiki Edits: 16

Thanks: 7
Thanked 9 Times in 6 Posts
Quote:
Originally Posted by Rustydawg
Yup, you could get a guy that tries to shyster you into an expensive carb that you don't need. You take that chance. My experience is that the tech folk on the phone is a tech folk, not a salesman.

I would bet that the customer gets themselves in over their head on camshaft or carburetor choice more times than can be blamed on the tech support fellow. They're not on commission.

Calling a mail order warehouse may be a different matter. I would steer one towards the manufacturer's 1-800 support.
Yeah, that's true. I've just been shocked before at tech lines and their non-commissioned advice. I once had a guy at PAW tell me that all GMs used the same distributor and then tried to convince me that buying a chevy distributor would work in my Caddy 500. Then he went on to say that BBCs had a different cam gear because they were reverse rotation.

I didn't even say goodbye, I just hung up.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 09-28-2008, 02:46 PM
Registered User
 
Last photo:
Join Date: Jun 2008
Location: USA
Posts: 1,172
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
Quote:
Originally Posted by Old Pony
Im building a 347 stroker thatll produce about 400 HP. Ive got all sorts of opinions on carbs for it from the 650 Holley 4150 HP, to a Thunder Series AVS Edelbrock 800. I need to call upon the voices of experience. If it was my motor Id use a .
Thanks guys!!
Doesn't that depend a lot on what combination of parts you are building, for what overall purpose, and what specific vehicle it is going into?????

I would only use an air valve secondary, regardless of brand name.
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 09-28-2008, 04:40 PM
OHD's Avatar
OHD OHD is offline
Member
 
Last photo:
Join Date: Sep 2008
Location: outhouse
Posts: 285
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
" I once had a guy at PAW " YA GETS WHAT YAS, PAY FOR

Try AED they are good and build every single carb in house.
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 09-29-2008, 10:29 AM
Technical Support Barry Grant
 
Last photo:
Join Date: Jul 2003
Location: Dahlonega, GA
Posts: 1,503
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by Old Pony
Im building a 347 stroker thatll produce about 400 HP. Ive got all sorts of opinions on carbs for it from the 650 Holley 4150 HP, to a Thunder Series AVS Edelbrock 800. I need to call upon the voices of experience. If it was my motor Id use a .
Thanks guys!!
How much duration at .050 does the cam have? WHat transmission? If you want to pm us some more engine details we will be glad to make a recommendation for you. Typically with the 347 engines we are using a 650 on them for reference.
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 09-29-2008, 10:32 AM
Technical Support Barry Grant
 
Last photo:
Join Date: Jul 2003
Location: Dahlonega, GA
Posts: 1,503
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by curtis73
With all due respect, that is like calling the phone company and saying, "you choose the plan that is best for me," or asking a used car salesman to "pick whatever car he thinks is best."

They will provide all kinds of tech info to steer you into the polished 9000000 CFM wonder carb that is the newest thing.
You won't get that with our guys. Our tech guys are not tied to the sales department and will look at the engine and vehicle combination and make a recommendation based on information that can be found on our web site.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Quadrajet Carb??????? zbhover Engine 15 08-26-2010 08:57 AM
backfire thru carb airraptor Engine 11 06-12-2009 02:30 PM
700 R4 tv cable hook up at carb murrsue Transmission - Rearend 4 10-18-2006 09:50 AM
Cleaning Carb Question oldcarguy36 Engine 17 03-04-2006 02:10 PM
Holley carb has me at wit's end cool rockin daddy Engine 23 06-02-2005 02:38 PM


All times are GMT -6. The time now is 05:39 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.