Supercharger: 4-53 Short Bore

The GMC 4-53 Short Bore roots blower was built by GMC for their Detroit 53 series diesel inline engines. The 4-53 Short Bore has a 7.5 inch rotor length, 2 lobes and 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. There is a Long Bore version of the 4-53 with an 8.7 inch rotor.

Company: GMC

Type: Roots

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

Usage: Street

Availability: Discontinued

Drive Type: Belt

Displacement: 120 c.i.d. / rev. Approx.

Max Continuous Speed (RPM): ~2,500 - 2,800 (unverified)

Self Contained: No

Rotor Length: 7.5 inches

Center Case Height: 5.75 inches