Go Back   Third Generation F-Body Message Boards > Tech Boards > Carburetors
Sign in using an external account
Register Forgot Password?

Carburetors Carb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.

Welcome to ThirdGen.org!
Welcome to ThirdGen.org.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!


Reply
 
Thread Tools Search this Thread
Old 07-03-2008, 01:44 PM   #1
Senior Member
 
Join Date: Mar 2005
Location: Hamilton
Posts: 1,171
Car: 1990 IROCZ Camaro
Engine: 350 4bbl, 200cc Heads, 270hr Cam
Transmission: 700R4 w/ Trans-Go shift kit.
Axle/Gears: GM 10 bolt Posi

Classifieds Rating: (1)
What size discharge Nozzle?

I was going to up my discharge nozzle size in my Holley 750 4160. Stock size is .025, how far up should I go to try and diagnose a bog off idle (not while cruising)? .031? Setup is in sig.
__________________



355ci /
4bbl Holley 750cfm Carburetor / Edelbrock Performer RPM / Brodix IK200 Aluminum Heads / Comp XR270HR-10 Cam / ProComp HEI Distributor / Trans-Go Shift Kit / Powerstick Chambered Muffler / Summit Shorty Headers / Flowtec Y-Pipe / !Smog / !A/C


GuitarJunki17 is offline vBGarage Page   Reply With Quote
Old 07-05-2008, 07:42 AM   #2
Supreme Member
 
Join Date: Sep 1999
Location: Philly, PA
Posts: 5,803

Classifieds Rating: (0)
Re: What size discharge Nozzle?

.031 is a good starting point. When it comes to discharge nozzles, it's one area where it's much better to go too big than a little too small.
Damon is offline vBGarage Page   Reply With Quote
Old 07-05-2008, 07:49 AM   #3
Member
 
crazynights's Avatar
 
Join Date: Jun 2002
Location: MA
Posts: 413
Car: 1982 Z-28
Engine: 383
Transmission: Turbo 350
Axle/Gears: Det. Posi, Superior Axles, 3:73 G

Classifieds Rating: (1)
Re: What size discharge Nozzle?

Did you change the cam on the carb? Holley offers many different cams which give different profiles and you can adjust a larger pump of gas through the shooter with these. .031 is a good starting point as previously stated, but it is a trial and error process.
crazynights is offline vBGarage Page   Reply With Quote
Old 07-06-2008, 11:25 PM   #4
Senior Member
 
Join Date: Mar 2005
Location: Hamilton
Posts: 1,171
Car: 1990 IROCZ Camaro
Engine: 350 4bbl, 200cc Heads, 270hr Cam
Transmission: 700R4 w/ Trans-Go shift kit.
Axle/Gears: GM 10 bolt Posi

Classifieds Rating: (1)
Re: What size discharge Nozzle?

Yeah guys I have a cam set and a jet set on the way in the mail as well. Hopefully I can dial in the WOT tip in with these and the new shooter. Thanks for the insight!
GuitarJunki17 is offline vBGarage Page   Reply With Quote
Old 07-23-2008, 09:50 PM   #5
Junior Member
 
dp_Z28's Avatar
 
Join Date: Nov 2006
Location: ellisville, MS
Posts: 18
Car: 86 Z28, '06 Z-71
Engine: 350/trickflow heads
Transmission: 700R
Axle/Gears: 7.625/ 3.73's/powertrax locker

Classifieds Rating: (0)
Re: What size discharge Nozzle?

I have a very similar setup with a 4150 holley and I went from a 28 to a 37 discharge nozzle and it helped a lot.
dp_Z28 is offline vBGarage Page   Reply With Quote
Old 07-28-2008, 01:13 PM   #6
Junior Member
 
Join Date: Jun 2006
Posts: 63

Classifieds Rating: (0)
Re: What size discharge Nozzle?

Hi

Same kind of set up and carb as well as cam but the only thing I've done is bring down main jets from 70 to 67 and car reacts and performs great with 16 degrees advance , HEI s, vacuum on ported .
jean is offline vBGarage Page   Reply With Quote
Old 07-28-2008, 01:13 PM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > Carburetors

Tags
37, 383, 4160, 750, big, cam, carburetor, cfm, determining, discharge, holley, nozzle, nozzles, size, sizes
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off

 


1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 06:18 PM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.5.2
All content copyright © 1997 - 2012 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.

Emails & Contact Details