HOLLEY 38-34R6153B Carburetor Vacuum Secondary Plate 34R-6153B

( Brand: Holley ), ( Part Type: Vacuum Carburetor Plate ), ( Manufacturer Part Number: 38-34R6153B ), ( Country Of Origin: United States )

Review HOLLEY Carburetor Vacuum Secondary Metering Plate 38

The Holley 38-34R61503B Vacuum Secondary Carburetor Plate, model number 34R-6153B, is a crucial component for those seeking to enhance the performance and fuel efficiency of their carbureted engines. This vacuum secondary plate is specifically designed for Holley 383 and 400 series carburetors and is an essential upgrade for those running high-performance applications, including racing and hot rods.

This plate features a unique design that utilizes vacuum secondary circulation to improve carburetor performance under wide-open throttle conditions. The vacuum secondary system draws fuel from the main jet for a more efficient combustion process, resulting in improved power output and throttle response.

The 38-34R61503B plate is precision-machined from high-quality billet aluminum, ensuring a perfect fit and exceptional durability. The plate's surface is finished with a high-quality anodized coating, which not only provides a sleek appearance but also protects against corrosion and wear.

This plate is designed to work with Holley's 1150, 1100, 1050, and 950 CFM carburetors and is compatible with various vacuum secondary systems, including Holley's progressive linkage and mechanical secondaries. The plate comes with all necessary hardware for easy installation.

The 38-34R61503B vacuum secondary plate is an excellent upgrade for any Holley carbureted engine seeking improved performance, fuel efficiency, and power output. It is backed by Holley's reputation for quality and reliability, ensuring that it meets the highest standards of performance and durability. Upgrade your carbureted engine today with the Holley 38-34R61503B Vacuum Secondary Carburetor Plate.

The Holley 38-34R6153B vacuum secondary carburetor plate, part number 34R-6153B, is a performance-enhancing component for Holley 38/4160 series carburetors. This plate features vacuum secondary technology, which provides additional fuel to the carburetor under vacuum conditions, such as during acceleration. Here are some pros and cons of buying this Holley vacuum secondary plate.

1. Improved Performance: The vacuum secondary plate helps to increase the carburetor's vacuum secondaries' sensitivity, resulting in better low-end and mid-range performance.

2. Enhanced Acceleration: The additional fuel delivered to the engine during acceleration improves throttle response and makes the engine more responsive.

3. Fuel Efficiency: By optimizing the fuel mixture during acceleration, the vacuum secondary plate can help improve fuel efficiency.

4. Easy Installation: The Holley 38-34R6153B plate is designed to be a direct replacement for the stock plate, so installation is relatively simple.

1. Cost: The Holley vacuum secondary plate is more expensive than the stock plate.

2. Complexity: The vacuum secondary technology requires a more complex carburetor setup, which may require additional tuning and adjustment.

3. Potential for Leaks: The additional vacuum lines and connections can increase the chances of leaks.

The Holley 38-34R6153B vacuum secondary plate is an excellent performance upgrade for Holley 38/4160 series carburetors. It offers improved performance, enhanced acceleration, and potential fuel efficiency benefits. However, it comes with a higher cost, increased complexity, and a potential for leaks. Ultimately, the decision to purchase this plate depends on your specific performance goals, budget, and technical expertise.

If you're looking to improve the performance of your Holley 38/4160 series carburetor and have the budget and technical expertise to handle the additional complexity, the Holley 38-34R6153B vacuum secondary plate is a worthwhile investment. However, if you're on a tight budget or prefer a simpler carburetor setup, you may want to consider other performance upgrades or stick with the stock plate.

part # 3834r6153b prices

• $9.95-$25.00

specifications carbcaddie:

• brand: Holley
• part type: Vacuum Carburetor Plate
• manufacturer part number: 38-34R6153B
• country of origin: United States

offer carbcaddie:

• quantity: 1
• started: May 30, 2026
• options: Ship-to-home
• best offers: True
• sold: 0
• availability: In Stock

returns carbcaddie:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

seller carbcaddie:

• rating: 100.0%
• # reviews: 34807

shipping carbcaddie:

• class: Standard
• cost: $0.00
• transit: 4-10 Days
• service: USPS Ground Advantage
• type: Calculated
• carrier: USPS

payments carbcaddie:

• credit card: Diners-club
• other
• wallet: Google-pay

general carbcaddie:

• condition: Used
• Car Truck Parts Accessories > Air Fuel Delivery > Carburetor Parts

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