Hi-Tech Hydraulic Lifters have a greater bleed rate, which greatly increases vacuum, throttle response and noise. Hi-Tech Lifters were designed primarily for extremely hot street machines or racing applications where a vacuum rule is in place or where you must run a Hydraulic cam.
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LT01: 70% wool, 15% polyester, 10% polyamide, 5% acrylic 900 Grms/mt