What Carburator - 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 09-20-2004, 10:57 AM
airman_turtle's Avatar
Member
 
Last photo:
Join Date: Nov 2003
Location: Louisa, VA
Age: 30
Posts: 180
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
What Carburator

im trying to figure out what carb i should go with. i am getting drawn to the Holley Avenger Series. Currently i have a 600cfm holley 4bbl and i know it is two small. Im unsure whether i should get the 670, or 770 avenger. They say the 670 is for 300-400 hp and the 770 is 400-500. Im not sure where i stand. The things that matter are...

Comp Cams - 520 intake lift, 490 exhaust.

2.05 intake valve and 1.60 exhaust

headers and 2 1/2 in dual exhaust

350 bored .040 with 10.5:1 compression

Edelbrock Performer Air Gap (want to get a Performer RPM though)

Auto tranny

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 09-20-2004, 11:14 AM
killerformula's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Carburetor
Last journal entry: Clean up
Last photo:
Join Date: Oct 2003
Location: Northeast
Age: 34
Posts: 3,485
Wiki Edits: 3

Thanks: 13
Thanked 27 Times in 18 Posts
670 is plenty

K
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 09-20-2004, 11:17 AM
airman_turtle's Avatar
Member
 
Last photo:
Join Date: Nov 2003
Location: Louisa, VA
Age: 30
Posts: 180
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
k thanks
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 09-20-2004, 01:55 PM
stepside454's Avatar
Member
 
Last photo:
Join Date: Dec 2003
Location: St. louis area
Age: 47
Posts: 1,074
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Airman, how much RPM does the motor see ?
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 09-21-2004, 06:35 AM
airman_turtle's Avatar
Member
 
Last photo:
Join Date: Nov 2003
Location: Louisa, VA
Age: 30
Posts: 180
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
5800-6000 max
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 09-21-2004, 06:39 AM
stepside454's Avatar
Member
 
Last photo:
Join Date: Dec 2003
Location: St. louis area
Age: 47
Posts: 1,074
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Yep, what Killer said, out of those 2 the 670 is more than plenty
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 01-31-2005, 06:38 AM
airman_turtle's Avatar
Member
 
Last photo:
Join Date: Nov 2003
Location: Louisa, VA
Age: 30
Posts: 180
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
ok, what if i wanted to use a demon? i like those as well, but i know they really under-rate them. would i go with a 575 or 650 cfm?
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 01-31-2005, 03:30 PM
stepside454's Avatar
Member
 
Last photo:
Join Date: Dec 2003
Location: St. louis area
Age: 47
Posts: 1,074
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
650 would be perfect
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 02-02-2005, 12:58 PM
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
650 Vacuum Secondary Speed Demon P/N 1282010VE.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 02-02-2005, 01:43 PM
Mighty Mouse S-10's Avatar
Cleverly disguised as grownup
 

Last journal entry: Hollman & Moody
Last photo:
Join Date: Dec 2004
Location: Huntersville, N.C.
Age: 56
Posts: 140
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I'm currently running a 770 Avenger on a similarly built 350. I started out with a 600 edelbrock, but it had no top end.( above 5000 rpm) When I changed to the 770 I lost a little off the bottom but the top end really came to life.( pulled hard to the 6000 rpm rev limit) So now I'm looking for a deal on a 670. I like the Holley carb, but if I can get a deal on a Barry Grant 650 I would definitely give it a run. I'll be curious to know which way you go and how it comes out.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 02-02-2005, 02:04 PM
stepside454's Avatar
Member
 
Last photo:
Join Date: Dec 2003
Location: St. louis area
Age: 47
Posts: 1,074
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Mighty Im really surprised 600 isnt enough for a 350 to 5000 RPMs, maybe there was a tuning issue. I built a 400 for a buddys truck, its got a 600 Edelbrock on it, it pulls to 5K without a probem. Ive got a 770 on my 454.
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 02-02-2005, 05:39 PM
Mighty Mouse S-10's Avatar
Cleverly disguised as grownup
 

Last journal entry: Hollman & Moody
Last photo:
Join Date: Dec 2004
Location: Huntersville, N.C.
Age: 56
Posts: 140
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Maybe a Holley would have performed better than the Edelbrock? The cam is 465/488 224/234 with 1.6 roller rockers on ported and polished Bowtie heads with Manley race flows. Headers and Flowmasters, so it breathes pretty good. Like I said the 770 is to big so maybe a 650 or 670. I've been looking at the Barry Grants but they are a little steep for my wallet.
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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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



All times are GMT -6. The time now is 04:30 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.