GMC

The GMC 2-53 roots type blower was built for Detroit’s 53 series diesel engines. The 2-53 has a 4.375 inch rotor length, 2 lobes and runs at higher RPMs than the 71 series. RPMs are reported to be somewhere in the 2,500 to 2,800 RPM range. Due to the lobe design this model runs louder … Read more

The original Detroit Diesel (GMC) Straight 71 Series roots blower designed for use on Diesel engines and later modified for racing, street and marine applications. The 2-71 is a non-standard case with side inlet.

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.

The original Detroit GMC 3-71 roots supercharger and part of the 71 series blower. It was developed for diesel engines and later modified for drag and then street and marine use. The 3-71 blower was used on the 3.5L / 213 cubic inch (ci) inline 3 engine that produced 113 hp. The 3-71 utilizes a … Read more

The GMC 4-53 Long Bore roots blower was built by GMC for their Detroit 53 series diesel inline engines. The 4-53 Long Bore has an 8.7 inch rotor length, 2 straight cut lobes and runs at higher RPMs than the 71 series. Due to the lobe design this model runs louder than the similar model … Read more

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 … Read more

The GMC roots blower was developed and used originally on Detroit 4-71 diesel engines which were 4.7l / 284 cubic inch (ci) inline 4’s. Later modified and then copied / re-engineered for racing, street and marine use. The 4-71 is a 3 lobe design with a 30 degree helix.

The original Detroit GMC 6-71 series roots supercharger used on diesel engines and later modified for drag and then street and marine use.

The GMC 6V-53 Long Bore roots type blower was built by GMC for their Detroit 53 series diesel V style engines. The 6V-53 Long Bore has a 13.1 inch rotor length, 2 straight cut lobes and runs at higher RPMs than the 71 series. Due to the lobe design this model runs louder than the … Read more

The GMC 6V-53 Short Bore roots type blower was built by GMC for their Detroit 53 series diesel V style engines. The 6V-53 Short Bore has a 10.9 inch rotor length, 2 straight cut lobes and runs at higher RPMs than the 71 series. Due to the lobe design this model runs louder than the … Read more

The GMC 6V-71 roots blower was developed for the Detroit V6 diesel engine as opposed to the 6-71 model which was for an inline engine. As with the 6-71 the 6V-71 is designed with two 3 lobe rotors that have a 30 degree helix. Starting out on commercial trucks and vehicles they were later modified … Read more

GMC 8-71 series roots blower designed and manufactured for use on 2 stroke diesel engines. Eventually modified by enthusiasts for strip applications then later street and marine. The 8-71 originated as a 3 lobe design with 30 degree helix.

The GMC 8V-53 blower was built by GMC for their Detroit 53 series diesel V style engines. The 8V-53 has a 15 inch rotor length with 3 lobe 30 degree helix cut. This differs from the other 53 series which use 2 lobe straight cut rotors. As with other’s in this series, they run at … Read more

The GMC 8V-71 roots blower was developed for commercial GMC Detroit V8 diesel’s like the 8-71 was for inline’s. The 8V-71 supercharger is designed with two 3 lobe rotors that have a 30 degree helix. Originally for commercial diesel applications they were later modified and then rebuilt, redeveloped and copied for strip, marine and street … Read more