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#425080508S
$484.95
/each
In Stock
$539.95
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Universal Fit, 4-Barrel Carburetor Barrels, 750 CFM CFM
Rebates Available
See rebate details| Carburetor Barrels | 4-Barrel |
| Fuel Type | Gasoline |
| Choke Type | Electric |
| CFM Range | 700-799 CFM |
| CFM | 750 CFM |
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855.313.9176Quick and Easy Returns
Return PolicyOne of the most widely used Holley carbs of all times -the 0-80508S! Its dual feed fuel inlets assure you get all the fuel you need and its 750 CFM of airflow makes it the perfect performance upgrade carb. Its vacuum secondaries and electric choke make it super easy to use on a wide range of vehicles. Don't trust your performance to just anyone, Holley is the only modular carburetor company that has been in business for over 100 years and has powered every NASCAR champion since the 60's.
Charts
Rebates
Holley's October Promo 10% Off Select Parts Sale, running from September 28, 2026, through November 1, 2026. For a limited time, customers can save up to 10% off on select Holley parts, making it the perfect opportunity to upgrade your ride with premium Holley branded parts including Holley, Brawler, Quick Fuel, Leg Wheels, Rev Wheels, Rocket Racing, Flowtech, Edge, Racequip, Apr and Dinan. Purchases must be made between September 28, 2026, through November 1, 2026. This limited-time offer applies to qualifying Holley branded parts purchased during the promotional period. Following the promotion, these parts will revert back to standard pricing.
Guides & Documents
For race/ off road use or for use on pre-1966 vehicles.
CA WARNING:
Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov
| KEY SPECS | |
|---|---|
| MFG. Part # | 0-80508S |
| Brand | Holley |
| Carburetor Barrels | 4-Barrel |
| Fuel Type | Gasoline |
| Choke Type | Electric |
| CFM Range | 700-799 CFM |
| CFM | 750 CFM |
| Carburetor Flange Type | 4-Barrel Square Bore |
| Finish | Shiny |
| Material Type | Aluminum |
| Color | Silver |
| Secondary Type | Vacuum |
| Fuel Inlet Type | Dual |
| Gasket(s) Included | Yes |
| New or Remanufactured | New |
| Throttle Linkage Type | Universal |
| Supercharged Application | No |
| GENERAL | |
| Model | 4160 |
| Booster | straight |
| Number of Circuits | 2 |
| Emission Code | 1 |
| Throttle Bore | 1.688 inch |
| Bolt Hole Pattern | 5.160" x 5.625" |
| GTIN Code | 090127420096 |
| Sold in Quantity | Each |
4.7
17 Reviews
Customers highly recommend the Holley 750, often remarking its immediate effectiveness 'right out of the box', adding performance to engines and fitting various models perfectly, such as the Pontiac 455 and Chevy stroker 383. Its top-quality and practicality were affirmed by users who reported excellent usability in all driving conditions. Holley 750's installation was also praised as quick and simple, requiring minimal to zero adjustments. The product's design was similarly commended, indicating great aesthetics and material quality. Superior to others, many customers would make repeat purchases.
4.7
17 reviews
5
15
4
1
3
0
2
0
1
1
Most Liked Positive Review
5.0
Highly recommend Speedway
I recently bought a Holley carb from Speedway. As always it showed up on time, but I saw that the carb went on sale a couple days later. I sent them an email letting them know and they gave me a refund for the sale price! Way to go guys. I highly recommend Speedway Motors!!!
Most Liked Negative Review
1.0
I would not Pay for this product again. Very Bad results.
I purchased the New Holley 750 to replace the twenty year old same thing on my 32' Roadster with blown 350 sbc. The reason was the inlet threads of the carburetor were leaking and could not be tightened. I decided to replace with the same thing. It ran ok for about a week, then decided it would not start. Perception was at least 2-3 cylinders were fouled. I played around with this for several weeks. Finally, I did a leak down on the engine to see if something was wrong. Leak down showed no problem. I decided to change to aluminum Dart heads and replaced those on the 20 year old engine. I then tried to start and no luck. I spent another couple of weeks playing around with the carburetor, then gave it to my engine builder to rebuild. Got it back in a couple of weeks and engine would still not fire. Checked plugs, replaced HEI ignition system with MSD, and still would not run. A friend of mine commented the new Holley carburetors were junk. He advised buying an Edelbrock 1906 AVS2 650 CFM. Which id did. Installed it and it runs perfect. I want to return the Holley Please? Had it for five months with all the issues.
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Holly carb
5.0
7 days ago
Jr
Idaho
Verified
Awesome looking carburetor running on a 1955 Chevy 210 w/. 383 stroker
Would Recommend
Highly recommend Speedway
5.0
8 months ago
Dave
Colorado
Verified
I recently bought a Holley carb from Speedway. As always it showed up on time, but I saw that the carb went on sale a couple days later. I sent them an email letting them know and they gave me a refund for the sale price! Way to go guys. I highly recommend Speedway Motors!!!
Would Recommend
I would not Pay for this product again. Very Bad results.
1.0
8 months ago
SwordfishD
Paradise, CA.
Verified
I purchased the New Holley 750 to replace the twenty year old same thing on my 32' Roadster with blown 350 sbc. The reason was the inlet threads of the carburetor were leaking and could not be tightened. I decided to replace with the same thing. It ran ok for about a week, then decided it would not start. Perception was at least 2-3 cylinders were fouled. I played around with this for several weeks. Finally, I did a leak down on the engine to see if something was wrong. Leak down showed no problem. I decided to change to aluminum Dart heads and replaced those on the 20 year old engine. I then tried to start and no luck. I spent another couple of weeks playing around with the carburetor, then gave it to my engine builder to rebuild. Got it back in a couple of weeks and engine would still not fire. Checked plugs, replaced HEI ignition system with MSD, and still would not run. A friend of mine commented the new Holley carburetors were junk. He advised buying an Edelbrock 1906 AVS2 650 CFM. Which id did. Installed it and it runs perfect. I want to return the Holley Please? Had it for five months with all the issues.
Would Not Recommend
Great product and speedy delivery.
5.0
a year ago
Wee Willy
Kennewick Washington
Verified
The 750 Holley was easy to install with no modification required in my classic 1977 F150 with 429 power. The new float windows are great and safer than the old style float bowls. Minor adjustments to float level and idle setting and the old truck was down the road.
Would Recommend
Worked right out of the box
5.0
2 years ago
Stu
Arlington Wa
Verified
Bolted right on and didn't need any tuning worked great.
Would Recommend
I would buy again
5.0
2 years ago
Stu
Michigan
Fast
Would Recommend
I would purchase again in the future
5.0
4 years ago
Mac
Kinderhook, NY
Verified
The Holley 750 sits happily on top of my Pontiac 455. It works very well and gave my engine some add performance.
Would Recommend
SPEEDWAY MOTORS IS THE BEST!
5.0
4 years ago
MR. CHEVROLET
USA
Verified
SPEEDWAY MOTORS IS THE BEST! THEY HAVE WHAT YOU NEED AND WANT AND GET IT TO YOU FASTER!
Would Recommend
I would and have bought this carb again
5.0
4 years ago
Johnny Bad Luck
San Antonio TX
Verified
Bolt on and started up right out of box no problem
Would Recommend
I would buy this Holley 750cfm again
5.0
5 years ago
Doug
Elon
Verified
This carburetor is great for all driving conditions for me!
Would Recommend
Showing 10 of 17 reviews
1 Question • 1 Answer
I'm looking to replace a Rochester Quadrajet on a 1968 Buick 350. Will this bolt up to the stock intake?
by Todd
• 8 years ago
1 answer
View Answer
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