The GMC 3-53 roots blower was built by GMC for their Detroit 53 series diesel engines. The 3-53 has a 6.5 inch rotor length, 2 lobes and reportedly runs at higher RPMs than the 71 series. Due to the lobe design this model runs louder than the similar model in the 71 series.
In GMC Series: 53
Series 53 Units Include: 8V-53, 6V-53 Long Bore, 6V-53 Short Bore, 4-53 Long Bore, 4-53 Short Bore, 3-53, 2-53
Drive Type: Belt
Displacement: 104 c.i.d. / rev. Approx.
Max Continuous Speed (RPM): ~2,500 - 2,800 (unverified)
Self Contained: No
Rotor Length: 6.5 inches
Center Case Height: 5.75 inches
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