Home Register FAQ Members List Photo Gallery Garage Search Today's Posts Mark Forums Read Vendor Directory


Go Back   Third Generation F-Body Message Boards > Tech Boards > Carburetors
Reload this Page Spread Bore or Square Bore????

Carburetors Carb discussion and questions. Upgrading a Third Gen 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
Old 02-23-2008, 11:59 PM   #1
Member
 
Join Date: Oct 2006
Location: Newfoundland, Canada
Posts: 119
Car: 1985 Firebird Trans Am.
Engine: 305 H.O. 4bbl
Transmission: 700R4.. I think
Axle/Gears: Not Sure, 3.73?

Classifieds Rating: (0)
Send a message via MSN to 85TransAmDude
Spread Bore or Square Bore????
Ok so im looking into buying an Edelbrock Performer Intake Manifold...im wondering if my engine is EGR or non-EGR and wether i should get a Spread Bore or Square Bore intake manifold...its an 85 Trans Am, 305 LG4...also would i need a carburetor adapter plate? and would the stock carb bolt right on?? thanks....now before you guys start telling me to save my money for a better engine or block and build my own engine il let you know now that i dont have that kind of money lol...however in the future when i do have the money it will happen but for now im only gonna do a few things to the engine i have now lol...thanks
This ad is not displayed to registered members.
Register your free account today and become a member on ThirdGen!
85TransAmDude is offline vBGarage Page   Reply With Quote
Sponsored Links
Registered users do not see this ad.
Click here to register for free!
Old 02-24-2008, 12:39 AM   #2
Moderator
 
Apeiron's Avatar
 
Join Date: Jan 2000
Location: Rio Oro de Santa Ana, San Jose, Costa Rica
Posts: 16,485
Car: 1984 Z28 Hardtop / 1988 IROC T-top
Engine: 383 Carb / 305 TPI
Transmission: 4L60 / T-5
Axle/Gears: 3.54 Dana 44 / 3.08 10 bolt

Classifieds Rating: (0)
Re: Spread Bore or Square Bore????
If you're going to use the stock carb, you need a spreadbore intake.
Apeiron is offline vBGarage Page   Reply With Quote
Old 02-24-2008, 12:44 AM   #3
Moderator
 
five7kid's Avatar
 
Join Date: Mar 2000
Location: Littleton, CO USA
Posts: 34,578
Car: 82 Berlinetta(2)/57 Bel Air
Engine: 86 LG4-> ZZ3(LS1)/mild 396
Transmission: TH700(T56)/TH400
Axle/Gears: 10-bolt 3.23(4.10)/8.2" 10-bolt4.11

Classifieds Rating: (4)
Your stock manifold is EGR.

All Performer intakes are set up for either square bore or spread bore.
five7kid is offline vBGarage Page   Reply With Quote
Old 02-24-2008, 02:50 AM   #4
Senior Member
 
xpndbl3's Avatar
 
Join Date: Jan 2002
Location: Orland Park, IL
Posts: 11,289
Car: 1984 Z28
Engine: carbed ls1
Transmission: TH400
Axle/Gears: moser 9" 4.11

Classifieds Rating: (2)
Send a message via AIM to xpndbl3
Re: Spread Bore or Square Bore????
i'd do shorty headers, a nice cat, and a 3" catback exhaust before i'd ever bother replacing the stock intake with the performer intake which won't net you any power for the $ spent compared to other mods.
__________________
my car thats never done
"I'd rather be judged by 12 than carried by 6"
First Place Camaro Modified Thirdgenfest '05, Second Place Camaro Modified Thirdgenfest '06, Best Modified Camaro Thirdgenfest '07 , Second Place Camaro Modified Thirdgenfest '08
MFBA March 2008 Featured Calendar Vehicle
xpndbl3 is offline vBGarage Page   Reply With Quote
Old 02-24-2008, 09:55 AM   #5
Member
 
Join Date: Oct 2006
Location: Newfoundland, Canada
Posts: 119
Car: 1985 Firebird Trans Am.
Engine: 305 H.O. 4bbl
Transmission: 700R4.. I think
Axle/Gears: Not Sure, 3.73?

Classifieds Rating: (0)
Send a message via MSN to 85TransAmDude
Re: Spread Bore or Square Bore????
ok but say i wanted to put a holly carb with it...should i go for a squarebore?
85TransAmDude is offline vBGarage Page   Reply With Quote
Old 02-24-2008, 10:12 AM   #6
Moderator
 
five7kid's Avatar
 
Join Date: Mar 2000
Location: Littleton, CO USA
Posts: 34,578
Car: 82 Berlinetta(2)/57 Bel Air
Engine: 86 LG4-> ZZ3(LS1)/mild 396
Transmission: TH700(T56)/TH400
Axle/Gears: 10-bolt 3.23(4.10)/8.2" 10-bolt4.11

Classifieds Rating: (4)
Why would you want to do that? Your stock q-jet is your best choice until after a long, long list of other modifications are done. Basically, as long as it's on the street.
five7kid is offline vBGarage Page   Reply With Quote


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > Carburetors
Reload this Page Spread Bore or Square Bore????
« Holley in the news | Identifying Edelbrock Carb »

Tags
305, 91, adapter, bolt, bore, carb, edelbrock, holley, intake, manifold, manifolds, performer, spread, spreadbore, square
Thread Tools

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 12:25 PM.

Contact Us - ThirdGen.Org - Advertising - Privacy Policy - Terms of Use - Jobs - Top

Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2010, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.2.0
All content copyright © 1997 - 2010 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.