TCI 374420 - TCI TV Boost Valves

TCI #890-374420TV Boost Valve - .490'' Dia.Applications |
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TCI boost Valves replace stock in all 700r4 & 200 4r applications. The boost valve increases clamping forces generated by higher line pressure. The 890-374301 is best suited for applications stock to 450hp. The 890-374401 is best for applications exceeding 450hp (best when used with the low rev. boost valve 890-374410), and the low rev. boost valve will bolster line pressure to allow you to get the added line pressure needed when making that BIG horsepower.
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