The main drawback to Roots-style superchargers is the consistency of the air charge. $592.32. This chart shows the static and effective compression ratio at various boost levels for both pump gas and race gas. I put VP112 in the car to keep from detonation. Do not use any Weiand supercharger with a toothed drive belt or a pop-off valve in any enclosed marine engine compartment! The blower and crank pulleys were combined with a ⦠I traded for a new,never used, b/m 144 supercharger that i have installed in my 56'chevy.. Everything is fine,except the lower crank pulley is wobbling a little,,my problem is that although this supercharger was bought new in 1990,and b/m no longer sells superchargers, where should i look for parts,or replacement belt when it comes time to replace it?? The Weiand supercharger gave ⦠Plus (+) psi boost numbers (+2 psi, +5 psi etc) is a non scientific, inaccurate and confusing method of rating pulleys. Edelbrock 15822 E-Force Supercharger Pulley 3.0 in. If I swap top pulley to 2.86" I'll have a drive ratio of 2.10:1 and should be 7.2psi. - download Drive Chart for 1/2" Pitch Pulleys - download Drive Ratio Chart for 8mm Pulleys - download Drive Ratio Chart for 13.9mm & 14mm Pulleys; Final Compression Ratio Chart This chart shows the final compression ratio combining the static compression ratio of an engine and the maximum blower boost from the blower system. The chart above is for a Weiand 6-71 blower with 8-mmpitch drive pulleys. Specializing in 6-71, 8-71, 10-71, and 14-71âs; The Blower Shop ⦠$347.35. weiand 8mm pitch supercharger pulley wm7109-59 gil. add to cart. Drive Pulley - 10-Rib - Chevy S/B 144 Blower - Low Profile 90825 Pro-Street SuperCharger Serpentine Drive Belt Weiand View ⦠RBS Superchargers is a professional supercharger building and repair service that stocks new and used parts, blower kits and accessories. Iâve swapped the balancer 3 times hoping I ⦠Length - w/6 in. Pulley, Supercharger, Serpentine, Aluminum, Black Powdercoated, Weiand 142/177, Each. Weiand developed the first ever aluminum intake manifold in 1937. Pulley, Supercharger, Serpentine, Steel, Black, 6-Groove, 2.50 in. These Pulleys fit most, including B&M, WEIAND, PSI, BDS, BOWERS, DYERS, SUPERCHARGER USA, HAMPTON, MOONEYHAM, SSI, and DETROIT DIESEL 71 series style blowers. The angled piece is just angle iron, and the actual tensioner arm is a generic chrome Autozone part. add to cart. 99: 100: 101: 102: 10: 3: 104: 105: 106: 107: 10: 8: 109: 110: 111: 112: 113: 114 115 116 117 118 It illustrates how one pulley can be changed to achieve a specific blower speed. I think thats the limit for 93 octane but maybe I can go up to 8psi with boost retard system and msd distributor. 6 Rib Design For Use w/Stage 3 Professional Tuner System Black Anodized Finish E-Force Supercharger Pulley. Weiand's 177 Pro Street supercharger kits are engineered to give you a 25-40 percent gain in power - while maintaining outstanding streetability. A FREE calculator that determines the Supercharger boost based on Displacements, Belt Ratio and Efficiencies. The supercharger has been a staple in drag racing since the sport began, from the first hot rods on the salt flats to the beginnings of Top Fuel racing. 4.9 out of 5 stars 5. Hand building billet Superchargers, The Blower Shop produces some of the best blowers in the business. The Weiand pulley in the box was a two piece with a spacer and a flat pulley. In addition, low-profile designs are also available to provide added hood clearance in tight engine compartments. The chart will find a total teeth range for a specific belt length. Hi! Our supercharger pulleys are made from a single 6061 alloy aluminum billet, and turned to an accuracy within .001 of an inch. Look to Weiand as your power source! Description: 45.5 in. Today, Weiand is still at the forefront of intake manifold and blower development as well as high flow water pumps. Locate your engine and belt style in the chart below. Dyer Blowers manufactures, sells and services 471, 671, and 871 kits for Chevy, Ford, Chrysler, Mopar, Dodge, Plymouth, Pontiac, AMC, Buick and Oldsmobile V8 Engines. Using the popular 6-71 supercharger, the chart below shows you how pulley size can effect the boost pressure of a given blower: It is perfectly fine to run a larger blower on a small engine as long as you use the proper underdrive pulleys to create safe boost levels. The chewed belt is from failed idler pulley attempt #2. $3.00 shipping. Weiand has 1 chart that I found for compression to boost ratio Is their another chart or is this the only one. #ad #ad #ad add to cart. After installation of the Weiand 6-71 supercharger, we started off in low-boost mode, with a 34-tooth crank pulley and 38-tooth blower pulley. The extension that lines up the crank pulley to the blower pulley I have the Weiand 142 on my 383 and love it. Best i can get with a tablet camera. These Pulleys to work with as a replacement for a majority of the Blower Systems manufactured today. All superchargers are built in Weiand's state-of-the-art manufacturing cell and each supercharger is 100% boost tested to help you squeeze out maximum power and efficiency. ... Weiand 6900 Supercharger to Manifold Gasket. Thanks I put the 2.66 pulley on the blower with the 6 inch crank pulley. Part Number: WND-90636 These Pulleys to work with as a replacement for a majority of the Blower Systems manufactured today. Performance Trends Blower Boost Calculator Type in the required information: Dyer's Blowers also repairs most GMC and aftermarket 4-71, 6-71 and 8-71 Roots Blower as well as rebuilds B&M, Holley and Weiand Mini ⦠I have a 383 in my 80 Camaro with a 177 Weiand blower. $405.13. The blower I'm buying tomorrow is a weiand 144 with 10 rib and pulleys set up for 1.95:1 drive ratio so it should make 5.82psi as is. This made finding a different size that would fit pretty easy. The stock crank pulley for the 6.1 is 6.44. PULLEY-BELT CHART FROM THE BLOWER SHOPS CATALOG The speed at which the supercharger fills the cylinders depends on how quickly it is driven by a pulley and drive belt. Here's what various pulley combos did for my V3 setup. To make more power you have to get more air to your engine. A Roots-type blower pulls in air and compresses it in the engineâs cylinders. The center to center distance between the upper and lower blower pulley. No clue how it relates to the Novi. of a supercharger unit can be caused a number of ways and each of them has their early warning signs and specific way to be repaired. Thirty years later Weiand developed complete blower drives for the GMC 6â71 supercharger. RBS offers a trade in program on all blowers / superchargers. Producing Quality Computer Tools for Racers and Engine Builders since 1986. or should i buy a weiand supercharger.. Diameter, Chevy, Weiand, Holley, Each. weiand 8mm pitch supercharger pulley wm7109-63 gil. weiand action +plus h/v water pump wm8209p polishe. Telephone: 530-274-FUEL or 530-274-3835 Simply type in the name of your car in the search box to get started finding the correct pulley for your application.All of our aluminum pulleys are hard anodized 6061 ⦠Part Number: WND-6791 Not Yet Reviewed weiand action +plus h/v water pump wm8209 suit for. out ⦠Centrifugal Blower Pulley OD/UD Calculator, blower overdrive calculator, blower underdrive calculator, pulley calculator Welcome to Pulley Boys, your premier source for aftermarket high performance supercharger pulleys. These Pulleys fit most, including B&M, WEIAND, PSI, BDS, BOWERS, DYERS, SUPERCHARGER USA, HAMPTON, MOONEYHAM, SSI, and DETROIT DIESEL 71 series style blowers. Dyers Blowers is one of the leading manufacturers of street strip superchargers. At Kenne Bell, we prefer to also use âratiosâ (crank pulley ÷ supercharger pulley = ratio) to describe a potential boost increase. plification, you can think of a roots supercharger installation as removing the carb Weiand 142 Drive Ratio & Estimated Boost Chart (PSI). Hi, Iâve tried searching but have yet to find a solution. PULLEYS, RATIOS & BOOST â See chart for boost numbers. Automotive $13.25 $ 13. 25 $14.72 $14.72. 2.80" pulley, with or without Sur-Grip® 2.90" pulley, with or without Sur-Grip® 3.00" pulley, with or without Sur-Grip® 3.10" pulley, with or without Sur-Grip® 3.20" pulley, with or without Sur-Grip® TOP QUALITY! Itâs a new build. $376.10. Pitch Chart Weiand 6-71 blower kit: 7482: Summit Racing: $3,009.95: Weiand blower pulley, 8mm pitch: 7109-XX: Summit Racing: 149.95 (and up) Holley 750-cfm ⦠Performance Trends Inc. PULLEY-BELT CHART FROM THE BLOWER SHOPS CATALOG The two most common types of superchargers in drag racing are the roots and screw blowers that can be seen sticking out of the hoods of different racecars in venues around the world. The supplied kit featured the supercharger, mounting bracket assembly, and pulley combo. The aluminum is the original bracket, cut off. If you cannot decide which belt will work for your application, we suggest calling our tech Department. Jackshaft / Cog / Impellor / Avg Boost 3.250" / 32 tooth = 44350 rpm / 6.74 psi (Stock Vortech setup) 3.250" / 28 tooth = 50686 rpm / 8.77 psi (Best ET setup) ... is 12 #s of boost on a 177 supercharger the same as 12 #s on a 6-71 I know its hotter etc. My bottom drive pulley sticks out about 1/2â more than the top pulley causing it to run off on the bottom end. 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