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Moroso 65425 Holley Secondary Vacuum Review

2

·

Very good

Revainrating 4.5 out of 5  
Rating 
4.3
🚀 Engines & Engine Parts, 🏎️ Performance Car Parts & Accessories

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Description of Moroso 65425 Holley Secondary Vacuum

provides springs of various rates to allow the racer to custom tailor the vacuum secondary opening and closing rate to best suit their combination. contains seven springs color coded from light to heavy. instructions included. Fit type: Universal.

Reviews

Global ratings 2
  • 5
    1
  • 4
    1
  • 3
    0
  • 2
    0
  • 1
    0

Type of review

Revainrating 4 out of 5

Improved vacuum for high performance engines

This vacuum system is a game changer for any automotive enthusiast looking to improve their engine's performance. Based on my observations this product is top-notch and delivers significant gains in horsepower and torque. Using this system, my engine has never run smoother and the throttle response has improved significantly .The installation is straightforward, and i appreciate the durable construction. The only con is the slightly higher price compared to other vacuum systems on the market…

Pros
  • Highly impressive
Cons
  • Rumpled

Revainrating 5 out of 5

Fine-tune your Holley

Allows me to fine-tune opening the secondary. Improved gas mileage by 3 mpg. 1973 Chevy Pickup with 383 Stroker and 540 Cam.

Pros
  • Instructions included
Cons
  • Protection