C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Spread Bore To Square Manifold??

Thread Tools
 
Search this Thread
 
Old Nov 15, 2003 | 09:01 AM
  #1  
Edzred72's Avatar
Edzred72
Thread Starter
Le Mans Master
10 Year Member
 
Joined: Oct 2001
Posts: 5,943
Likes: 3
From: Wildwood IL
Default Square Bore To Spread Manifold??

I've looked in the catalogs but can't find a carb adapter that allows a square bore carb to be mounted on a spread bore pattern Performer intake. Does one exist????
Eddie


[Modified by Silvr77, 11:14 AM 11/15/2003]
Reply
Old Nov 15, 2003 | 09:59 AM
  #2  
PRESSURERAT's Avatar
PRESSURERAT
Pro
 
Joined: Oct 2003
Posts: 565
Likes: 0
From: I'm bleeding, making me the victor!
Default Re: Spread Bore To Square Manifold?? (Silvr77)

If you have an edelbrock manifold you can use edelbrock part number 2732 which is a very thin adapter plate, like 1/16 thick. If you have a stock q-jet intake, you can use a mr gasket #1932 which is 1" thick.
Reply
Old Nov 15, 2003 | 11:40 AM
  #3  
Edzred72's Avatar
Edzred72
Thread Starter
Le Mans Master
10 Year Member
 
Joined: Oct 2001
Posts: 5,943
Likes: 3
From: Wildwood IL
Default Re: Spread Bore To Square Manifold?? (PRESSURERAT)

Thank You pressurerat. I bought a spreadbore pattern Performer cheap...and don't want to put my old Q-Jet back on or limit my options to spreadbores as I look at new carbs.
Thanks again
Eddie
Reply
Old Nov 15, 2003 | 02:56 PM
  #4  
toddalin's Avatar
toddalin
Le Mans Master
25 Year Member
Liked
Loved
Top Answer: 3
 
Joined: Oct 2000
Posts: 8,897
Likes: 1,357
From: Santa Ana CA
Default Re: Spread Bore To Square Manifold?? (Silvr77)

Think I still have one of these adapters around here somewhere. If you need one, I can look through my parts.
Reply
Old Nov 15, 2003 | 03:09 PM
  #5  
cardo0's Avatar
cardo0
Le Mans Master
20 Year Member
 
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
Default Re: Square Bore To Spread Manifold?? (Silvr77)

:nono: I think you can save your money slvr77. Every Edelbrock performer intake for the sb Chevy I know of accepts spread bore and/or square bore carbs. Yep, an enlarged plenum hole and extra set of bolt holes to fit either carb. :yesnod: Now the Performer RPM is different and won't accept both.
BTW those adapters work poorly and reduce performance. I'd change intakes first if at all possible. :yesnod:


[Modified by cardo0, 2:10 PM 11/15/2003]
Reply
Old Nov 15, 2003 | 04:09 PM
  #6  
Edzred72's Avatar
Edzred72
Thread Starter
Le Mans Master
10 Year Member
 
Joined: Oct 2001
Posts: 5,943
Likes: 3
From: Wildwood IL
Default Re: Square Bore To Spread Manifold?? (cardo0)

:nono: I think you can save your money slvr77. Every Edelbrock performer intake for the sb Chevy I know of accepts spread bore and/or square bore carbs. Yep, an enlarged plenum hole and extra set of bolt holes to fit either carb. :yesnod: Now the Performer RPM is different and won't accept both.
BTW those adapters work poorly and reduce performance. I'd change intakes first if at all possible. :yesnod: [Modified by cardo0, 2:10 PM 11/15/2003]
I'll have to check it again, but I test fit an Edelbrock 750 on the intake, and the primaries were binding. May have been misalligned.....Thanks
Eddie





[Modified by Silvr77, 3:10 PM 11/15/2003]
Reply

Get notified of new replies

To Spread Bore To Square Manifold??





All times are GMT -4. The time now is 09:22 AM.

story-0
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-1
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-2
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-3
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-4
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-5
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-6
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-7
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-8
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-9
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE