TBS-2157 - 14.71 XR-1 RACE BLOWER. 123.5 DEGREE HI-HELIX. (22.25 CASE). 5.84in DIA BILLET ROTORS. 13.25in C-C 10.5in OPENING. REAR NOZZLES. (BLACK ANODIZED).

The Blower Shop Billet XR-1 14.71 Race Supercharger is designed for high performance Race applications using Alcohol or Nitro. This blower has been machined so precisely that you must tow your car to the staging lane when using this blower. The blower is equipped with an 18pt Teflon stripping for added efficiency and has a 13.25in top bolt pattern with a 10.5in opening.

The XR Series superchargers from The Blower Shop have been developed over a period of more than 30 years. Extensive in-house and off site testing has helped us put everything we know into developing the best race blower that money can buy. Every aspect has been designed using 3D CAD / CAM systems as well as on-site Blower Dyno testing. If you are interested in owning one of the most Elite and Race Proven Superchargers on the market, you have arrived. The Blower Shop has helped customers Win Races, Earn Championships and Break World Records since 1987. Let us help you do the same.

Average Boost Big Block Chevy 540 at 25% OD - 35lb Boost
On a 500cu in at 45% OD at sea level - 50lb Boost

Designed for use in the following classes: Top Fuel, Hydro, Tractor Pulling, Nostalgia Funny Car, and Nostalgia Dragster Classes

Features:
* Billet Aluminum Case
* Billet Hi-Helix Rotors (123.5 Degree Twist)
* Billet Front & Rear Bearing Plates
* 18pt Teflon Stripping
* Removable Top Inserts for Optimal Tuning
* Delta Bottom Opening for Increased Rotor-to-Case sealing (High Efficiency)
* Front Discharge pocket for high efficient air flow
* NO Setback Plate needed !
* Machined for Rear Cooling Nozzles

Measures:
* 26in Overall Length
* 2nd Bolt Hole Back 18in
* 2nd Bolt Hole Forward 8in

Includes:
* (1) 1/4 NPT Oil Level Sight Glass
* (1) 1/8 NPT Pressure Relief Valve
* (2) 1/8 Pipe Plugs

One of the finest and best values in blowers. Manufactured in the USA

Requires 29oz 80-90 Gear Oil in the Front of the Blower and 2oz Rear of the Blower