BoostMaster - Universal Automatic Vacuum Booster For GM Classic Cars
$475.00
Never suffer from weak brakes or malfunctioning vacuum accessories again. Our BoostMaster Universal Automatic Vacuum Booster is the ultimate solution for classic cars with vacuum-deficient setups—whether you're running a big cam, supercharger, or anything that robs vacuum.
This compact unit mounts directly under your brake booster for a clean, out-of-the-way installation. Pre-set to deliver 24 inHg (inches of mercury) at sea level, it automatically activates only when needed, ensuring a consistent vacuum source without unnecessary wear or constant pump operation.
Perfect for brake boosters, pop-up headlights, HVAC doors, and other vacuum-powered systems. For best results, feed engine vacuum into the booster as a primary source, allowing the pump to supplement only when necessary—maximizing longevity and performance.
Features:
Ideal for vacuum-starved engines (supercharged, big cam, etc.)
Clean inline mount under brake booster
Pre-set to 24 inHg vacuum output
Supports multiple vacuum accessories
Extends pump life by avoiding constant operation
Universal fitment for most GM classic cars years 1967-1988
Mount design may vary slightly.
May require slight modifications for certain vehicles.
Patent Pending
Quantity
PRODUCT INFO
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Pre-assembled
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Includes mount, hardware, hoses, vacuum switch, and relay.
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Ideal for vacuum-starved engines (supercharged, big cam, etc.)
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Clean inline mount under brake booster
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Pre-set to 24 inHg vacuum output
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Supports multiple vacuum accessories
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Extends pump life by avoiding constant operation
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Universal fitment for most classic cars
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Powdercoated Steel / Carbon Fiber Reinforced Nylon construction
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For cars with power brakes/brake booster only
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Please anticipate a 3-5 business day lead time due to elevated order volume
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20 Amp Fused Power Required
RETURN & REFUND POLICY
For any undamaged and unused product, simply contact us at info@studiohotrods.com to return it in it original packaging along with the original receipt (or gift receipt) within 14 days of the date you receive the product, and we will exchange it or offer a refund based upon the original payment method. Buyer is responsible for return shipping costs.
SHIPPING INFO
Domestic Shipping Policy
If we are experiencing a high volume of orders, shipments may be delayed by a few days. If your shipment experiences a significant delay, we will contact you via email or phone. Shipping charges for your order will be calculated and displayed at checkout.
FREQUENTLY ASKED QUESTIONS
Do I need power brakes and an existing brake booster for this to work?
Yes. The BoostMaster is designed to work in conjunction with your vehicle’s existing power brake booster. It mounts directly beneath it and enhances the vacuum supply when engine vacuum alone isn't enough.
Will it fit my car?
The BoostMaster is engineered for universal fitment for most GM classic cars. However, some minor modifications may be required depending on your specific vehicle layout or brake booster configuration. Its compact design makes it easy to integrate without cluttering your engine bay. Check the dimensions in the product images to see if it will work for your setup.
Why would I need this?
If your classic car suffers from weak brakes, slow pop-up headlights, inconsistent HVAC doors, or any other vacuum-related issues, the BoostMaster is your solution. High-performance engines with big cams, superchargers, or modified setups often don’t produce enough vacuum for accessories to function properly. The BoostMaster ensures a reliable and consistent vacuum source, giving you safer braking and fully functioning vacuum-powered systems—automatically.
What if I have a vacuum leak—will this solve it?
No. The BoostMaster is not designed to fix vacuum leaks. If a leak is present, the pump will detect the low vacuum and run constantly, leading to premature wear and reduced performance. It's important to repair any vacuum leaks before installing the BoostMaster for best results.
Reviews
Very nice product... easy to install.. we'll made....works great
Wow the fit was great
Wiring was simple as the video said
Wife is not questioning this car part purchase
Thanks
I have a 1986 ElCamino. That is a LS swap. with 6 piston Willwood front disc and 4 rear. and the stopping power wasn't good.. I talk to the owner. at Studio. and told Him of my issue. I purchased this Vacuum assist unit. and it did really Help. going back to a smaller bore on the Master cylinder. Highly recommend This product. if you are running any type of LS or LSX Vehicle
Very easy install. Works great.
I have one suggestion for what it is worth. The bracket that attaches to the booster I would switch the slot to the engine side and the hole to the fender side. I had a tough time getting the check valve in my booster because the bracket was in the way.
This is a great product! Worked as advertised and is the quietest I ever installed. I am a shop owner; it is important that I receive quality products for my customers. We will be ordering again! Thank you!