Edelbrock 4025 Uni-Syn Carburetor Synchronizing Tool
Edelbrock 4025 Uni-Syn Carburetor Synchronizing Tool
Edelbrock

|

#3254025

Edelbrock 4025 Uni-Syn Carburetor Synchronizing Tool

  • Designed to work on small, one barrel and two barrel carbs (downdraft or side-draft)
  • Fits carb necks from 1-3/8" up to 3"
  • Tool has an outside diameter of 3", is 1.15" tall, and has a tube length of 3.5"
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$67.95

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Product Summary

Universal Fit, 3.00" Outside Diameter

  • Designed to work on small, one barrel and two barrel carbs (downdraft or side-draft)
  • Fits carb necks from 1-3/8" up to 3"
  • Tool has an outside diameter of 3", is 1.15" tall, and has a tube length of 3.5"
See more details

Key Specs

MFG. Part #4025
BrandEdelbrock
See more specs

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Edelbrock 4025 Details

UNI-SYN "A" Carburetor Balancing Instrument For 1 & 2-BBL With Round Top

If you have more than one carb on your hot rod, you need one of these "Uni-Syn" carb synchronizing tools. Just set on the top of your carb and adjust until all the carbs in your tri-power three deuce set-up read the same. 

Works well on small one barrel and two barrel carbs (downdraft or side-draft). Fits carb necks from 1-3/8" up to 3".

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Edelbrock 4025 Specifications

KEY SPECS
MFG. Part #4025
BrandEdelbrock
GENERAL
GTIN Code085347040254
Outside Diameter3.00"
Overall Height1.15"
Tube Length3.50"
Sold in QuantityEach
NotesCarb synchronizer works on downdraft or side-draft carbs with neck sizes as small as 1-3/8" to as large as 3".

Ratings & Reviews

4.8

22 Reviews

Overall Assessment

Customers find this product to be of high quality and easy to use. It's particularly valuable for synchronizing carburetors on vintage cars, multi-carb setups, and progressive setups. The simplicity in operation makes it a preferred tool for carb adjustments, even regarded as mandatory by many. It's highly effective, accurate, and described as a "must-have" by customers, reflecting its unique functionality and unparalleled performance. Its durability is noteworthy too, with one user replacing a similar tool bought back in 1975. The product is noted to be a user-friendly and economical solution for carb synchronization and tuning.

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4.8

22 reviews

5

17

4

5

3

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2

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1

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Worth the money

5.0

11 months ago

66 gmc guy

Kansas city KS

Verified

Used this to tune my tri power setup on my small block. Made dialing everything in a breeze! Must have tool if you're running a multi carb setup.

Would Recommend

Good product

5.0

a year ago

Max

Pleasant valley

Verified

Makes tuning easy.

Would Recommend

Definitely would buy this product again

5.0

2 years ago

Megs

Kelowna, BC

Syncing dual Super7 carbs on my 41 ford

Would Recommend

Simple and accurate!

5.0

4 years ago

Dr. Bob

Lincoln, NE

Verified

I use this tool to synchronize carburetors in old British Sports cars and in my old Mercury Flathead tri-power hot rod. It is simple and accurate.

Would Recommend

Would Work As Advertised

5.0

5 years ago

Out1rider

Ridgefield Wa

Verified

I didn't get a chance to use this. I bought 9super7's. The secondary carbs don't have fuel air mixture settings and I'm running a progressive setup.

Would Recommend

Worked great

5.0

5 years ago

hotrodlifer (on Instragram)

Grand Rapids MI

Verified

what I needed to synchronize the 6 Stromberg 97s on my caddy powered 32 ford coupe

Would Recommend

Required for accurate carb adjustments

5.0

6 years ago

Lanced

Bella Vista, AR

Verified

A must for tri power Holley and Ford carburetor on early Fords.

Would Recommend

Works great!

5.0

6 years ago

Robert Sandoval

Santa Fe, NM

Verified

Works great!

Would Recommend

Great!

5.0

7 years ago

Steve

Shreveport, LA

Verified

Thank you for the great service!

Would Recommend

Sync those carbs

5.0

8 years ago

Dave

NJ

Verified

This is the simplest way to really get the synchronization correct, be it a Corvair or a Jaguar.

Would Recommend

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Showing 10 of 22 reviews

Questions & Answers

7 Questions • 9 Answers

Do you need one for each carb on a dual set up?

by Grick22

• 13 years ago

2 answers

View Answers

will this carb sync tool work with snowmobile carbs? I have a 1996 Ski-Doo formula 3 600 triple.

by dr kelley

• 14 years ago

2 answers

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How dose this work I got 1962 chevy I need to set air and fuel on my carb. will this do that.

by Butch

• 14 years ago

1 answer

View Answer

I have 4 staggered rochester 2G carbs. The rochesters have a bow accross the top which will not allow the tool to sit on top of the carb. I am using a tin can which seems to work well but the tool was given too me without instructions. Like, how far open

by

• 15 years ago

1 answer

View Answer

Is this tool used to set the mixture as well as syncronization?

by tom

• 15 years ago

1 answer

View Answer

How exactly is this tool used? Is it used on each carb while at idle? I have 3 Rochesters with the center carb being the only one with an idle circuit.

by

• 15 years ago

1 answer

View Answer

will this unit work on su side draft carbs as found on older jaguars mgs --ect ?

by

• 15 years ago

1 answer

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