Engine rpm: When using stock cast pistons, the engine should be limited to a maximum of 4,500-5,000 rpm. You will typically find that performance with a blower will not be significantly enhanced below these speeds with a cam change. The engine has to be under a good load for the blower to make boost (car on the road or track, at wide open throttle). I can’t find anywhere that details carburetor function for a roots supercharger. So that should be just as important boosted or NA. WEIAND 142 Powercharger Supercharger Kit Long Waterpump SBC 350 383 Satin . Started by AlexGeo, 03-16-2017 08:26 AM. After initial start-up, check the spark plugs for proper reading (color) and adjust the carburetor(s) accordingly. The motor is a modified 4-AGE unit coupled to an electronically engaged roots type supercharger (manufacturer currently unverified) and a Nippon Denso air-to-air intercooler. Brand New. It has a factory rating of 8.0:1 compression from the factory, which is more like 7.5:1 in my experence. This may include lowering boost level, retarding timing, installing a boost timing master, increasing fuel flow to prevent leanout, and/or using a fuel additive to raise octane level. The second to last issue I’ve come across is LCA. The Boost Reference of the carbs to the lower manifold gives you the true engine vacuum reading and stops blower roll up and down idle speeds because under the carbs there is always a vacuum messing up the power valve. This site uses Akismet to reduce spam. If you’re installing a supercharger on a fuel-injected application, you may need to upgrade to larger fuel injectors and fuel rails to deliver the added fuel you may need based on BSFC (brake-specific fuel consumption). This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations. For use with 2 BAR MAP sensor and locked advance or crank trigger. $106.98 shipping. 3-5 psi boost level: This range of boost has proven to be the best compromise for power and reliability for engines using cast pistons, cast crank, and small cam, according to Weiand. Misc. For over a century Holley has driven the cutting edge of fuel-system design. 5.0 out of 5 stars 1. There's a buy selling a 142 weiand supercharger for 700$. Static compression ratio of the motor was dropped from 9.4:1 to 8.0:1. That means most late model OEM electronic ignition systems have the capability of working well with a supercharger and will be fine if you keep your driving under 5,500 rpm. - Learn the proper way to pick a blower pulley combination that's right for your application. But what if you want to take your engine beyond stock or mild? The use of O-ring head gaskets requires receiver grooves in the heads and block milled by a competent machine shop. All Rights Reserved. Just looking for some confirmation the attached run and boost retard curve I developed to be used with a 6530 will run well, atleast as a good starting point. From propelling the LS-, Coyote-, and Gen 3 Hemi-swap trends, to continuously innovating late-model and vintage vehicle performance, Holley’s commitment to its customers and their cars is at the core of everything we do. Engine rpm: When using stock cast pistons, the engine should be limited to a maximum of 4,500-5,000 rpm. Blower cams can typically be run “straight up.” Note that a blower has tendency to lessen the rough idle of radical cams. Weiand 3-Bolt Crankshaft Pulley Spacer For 144 Series Supercharger. Supercharger boost is largely misunderstood, even by some experienced performance enthusiasts. I called cam cams the other day to compare a stock bbc solid flat cam 11-106-3 which was getting 12mpg on the highway to a small hyd blower cam 11-404-4 they said they think I would get even better mpg with the blower cam, and I could run solid lifters on it with .012″ lash clearance. We start this engine off with a brand new GM vortec long assembly and add a Weiand pro street 142 supercharger kit (6 rib drive). No one knows all the facts of why things work on one car better then another too many variables, its always trade off of different things to learn what works for you ! Supercharger Model (application) / Weiand 142. Hmmm Says the motor it was on had issues. Bottom line is you can benefit from supercharging a stock, mild, or wild engine with the right tuning and modifications. If detonation is encountered, a boost/retard system that works with manifold vacuum and pressure is recommended. This does not make since to me. The pistons were TRW 0.030 Forged. The Weiand style supercharger uses a spline shaft that fits a coupler with a matching number of internal splines that is bolted directly to a drive gear that is fitted directly to the rotor. This is merely a suggested starting point. Find Weiand 6500-1 Weiand 142 Pro Street Superchargers and get Free Shipping on Orders Over $99 at Summit Racing! However, any of the aftermarket high performance standard or electronic distributors should function well when properly calibrated. The truck already has full length headers that are ceramic coated and SMOG legal too. Keep in mind, these are general suggestions–there are no hard and fast rules. Exceeding this limit may over-stress the cast pistons causing failure. This one happens to be on my 78 Malibu but almost everything in this article applies to a carbureted 3rd gen F-Body- even a computer control carbureted one. The supercharger will overcome most minor restrictions on the intake side of the cylinder head. I used a Dyers 6-71 under driven 12 %. The power benefits are huge, the installation process is simple, and the rewards are immeasurable. A supercharger can overcome inadequacies in a stock cam up to about 4,500-5,000 rpm. For initial start-up, it’s better to have a slightly rich condition to help prevent the engine from overheating. Holley has been the undisputed leader in fuel systems for over 100 years. Weiand 142 & 177 Powercharger Drive Pulley - 10-Rib, 6" Diameter. Anyone running manual transmissions? The 112-114 LCA is for a low boost motor, when the boost goes up higher a 110 LCA . When an engine has more than 50,000 miles on it, it’s a good idea to inspect the entire valvetrain. If you want to take your boost and/or engine rpm past Weiand’s recommended threshold for stock engines, you’ll need to make some modifications to your induction, ignition, and engine. For higher boost applications, consider a three-angle, “street-type” valve grind to promote better cooling. 4.6 out of 5 stars 2. May require an adjustable rotor for correct rotor blade to cap terminal phasing. It seams to me that pressure is more an indication of a restrictive intake/bad cam timing than it is supercharger output. Boost le… I’ve seen several cams that still have 25* or more overlap while others have 1-5 degrees of overlap. For instance, why does everyone focus on pressure (psi)? 11:1 compression ratio is common these days with forced induction. I myself just don’t trust hyd lifters. If the valve springs require replacement, factory heavy-duty springs should be used. These are great questions that we can use for a future post. Adding a shot of 100-octane fuel or octane boost may also be a good idea. I have a SBC with a weiand 177 supercharger. Blueprinting an engine using the proper components will allow higher rpm reliability and will maximize a supercharged engine’s potential. $129.66. Free FAST Shipping, 60 Day Returns, Expert Tech Support. You want to see a medium to dark tan color. I also find it interesting when people remark that a supercharger doesn’t perform better with aftermarket heads. This supercharger is intended for use on engines with compression ratios of up to 9.50:1 with a maximum blower pressure of 5-6 psi. Pro-Street Lower Drive Pulley Lower 6 in. A lean condition can lead to overheating and detonation. tourbo 4oo trans, long story short I drove that car back and forth to work, ran it all over the place for 5 years and only lost one head gasket the entire time. 2 lobe straight Ball/Ball bearing: 8.700 inches: 5.750 ... 142 c.i.d./rev boost up to 10+ psi: 2 lobe straight billet rotor Ball/Ball bearing: 8.700 inches: 7.750 ... Supercharged! The bottom end is all forged with 8.5 compression Edelbrock performer RPM heads. Search Within Results. However for optimum performance at higher rpms, a more aggressive camshaft will provide substantial power increases. One important thing to keep in mind with respect to Weiand roots superchargers is that throughout the RPM range, the air ratio of the supercharger is consistent with the engine dis-placement. PART# 6811WIN. Your email address will not be published. Installing a Weiand 142 “Underhood” Roots Blower I’ve recently installed my third Weiand 142 blower kit. The carburetor’s days are numbered, share the information before it is largely lost. Then relate that to temperature because if forced induction. Detonation (pinging): Detonation is the single most destructive force in a supercharged engine and steps must be taken to eliminate it. This was in 1979 when you could still find Ethyl High Test at some stations. Name of the game is reliability while still making good power, not looking for max power. Weiand 6801WIN 142 Supercharger Drive Belt, 10-Rib, 49.4 Inch Long. The distributor advance curve should be calibrated to give a total advance of 28 to 34 degrees by 2,500 rpm. Learn how your comment data is processed. Pro-Street Lower Drive Pulley Lower 6 in. This is my first blower. Please provide your information below and we will send you an e-mail when this product becomes available. Save my name, email, and website in this browser for the next time I comment. Supercharger boost, however, is not totally con-stant. Forged blower pistons with a static compression ratio of 7.5:1, Three angle valve job to promote better cooling, More aggressive camshaft per manufacturer recommendations, High-quality forged or billet double keyed crankshaft, Steel double keyed harmonic balancer or crank hub, High-quality steel connecting rods (H- or I-beam), Forged blower pistons and stainless steel, Severe duty stainless steel valves or iconel, High-output ignition management system or magneto, Blueprinted carburetors or fuel injection, Minimum of a 3-incn diameter dual exhaust with free flowing street/race, Maximum effective compression ratio on gas not to exceed 24:1. This new is 2700$ It's off the motor also. When any port work is being done to your cylinder heads, most of the effort should be directed to the exhaust ports. Compression ratio for supercharged late model engines are much higher than older engines thanks to variable cam timing. Typically the carburetors(s) will need to be enriched by 5 to 10 percent on the primaries and 10 to 20 percent on the secondaries. Set initial ignition timing at 6 to 10 degrees BTDC. The Weiand 142 Pro Street Super Charger is a 100% brand new super charger. Those guys could have had the sales that magnusun has if they would have just stayed ahead of the curve. Weiand Gasket, Carb Adapter To S/C. Replies: 2 ... Flowtech Headers, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition. In Blower Basics (Part 1), we debunked the myth that a supercharger is an exotic upgrade. Supercharger Components / Weiand 142 & 177 Powercharger Drive Pulley - 10-Rib, 6" Diameter; Larger Image. Just mentioning LCA seems very incomplete. The idle mixture screws may need to be enriched by one or two turns. These blowers feature all new parts, including new thick-wall cases and rotors to eliminate high-rpm flex. Pingback: cheapest way to build a blown ford v8 for fast street use - Page 6. Obviously the optimum intake to exhaust ratio is very different NA vs boosted and every head designed for NA has to be modified for good results for boost. Weiand 177 Drive 257 matches Price: FREE download wieand 142 supercharger instruction manual. ‘Because it is not as obvious,’ seems like a crap excuse to me. Street performance with a blown engine is usually best with a cam that is ground with a 112- to 114-degree lobe separation. I don’t have them myself. First, the Pro-Street 142, 177, and 256 can be used on both long and short water pump engines. If your blown engine is primarily driven on the street at moderate engine speeds (under 4,000 rpm) you won’t need a larger carburetor(s). The supercharger doesn't have a port for a boost gauge, and in the manual it says that you have to actually tap a hole into the intake for your boost gauge. Required fields are marked *. I have a tko600, most people run automatic transmissions. A quality electronic unit would be the preferred choice for best all around performance and reliability. Some parts are not legal for use in California or other states with similar regulations. The intake charge probably moves a little faster in total, but from what I’ve read overlap and low lift at the valves move air around the speed of sound. 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. No one seems to want to divulge how to do it right. The kind that seem to be everywhere these days. These boost levels are based on 350 or 454 cid engines. Any way you look at it, installing a blower like the Weiand Pro-Street 142 is money well spent. You should also make sure you have a good-flowing air cleaner and exhaust system to allow your supercharged engine to breath easily. Good heads less restrictions = more power, Remember its easy to move the air but to keep the fuel mixed with the air going in the engine it will stick to any walls in can find and drip. $2,555.95. With the use of an aftermarket camshaft, follow the camshaft manufacturer’s recommendations for valve springs. Pingback: Video: How a Turbocharger Works - OnAllCylinders. ... - From the minute a blower begins to turn, it pulls the crankshaft up against the top main bearing- the more the boost or speed , the worse it gets. Thanks for the article, helpful to many and I shared it…by the time I realized that it was meant for guys who were using V8’s built prior to the the LT1 or so…or whatever ford and mopar guys ran back then it was too late…then the recommendations from Weiand….I was like…OH MAN…rip van winkle. Top brands like MSD, Flowmaster, Hurst, Accel and many more make up the industry’s leading offering of enthusiast-driven products to deliver robust, complete performance solutions for builders, racers, and drivers. SUPERCHARGERS Technical Information. Only 6 left in stock - order soon. © 2020 Holley Performance Products. For best performance with a blower, you should look for a cam that has higher lift and longer duration on the exhaust side. Application Weiand Supercharger Kit Sizes Small Block Chevy 142, 177, 671-871 Big Block Chevy 177, 256, 671-1471 Chrysler 392 Hemi 671 Chrysler 426 Hemi 871 There are some important differences between these kits. It is not directly related to air density, which is the real factor controlling output. Maybe I’m way off here, but it seems to me that it could be explained by relating a smaller engine with forced induction to a larger NA motor in terms of intake/carburetor/exhaust. The extent of these modifications will depend entirely on how the engine is to be used. The motor is fitted with a different type of injector with a higher flow capacity. At full throttle a blown engine can require 50 percent more air than an unblown engine and as a result needs a larger carburetor(s) in order to make maximum power and boost. 58. « Blower Ratio Chart for 13.9mm, ... We sell a Synthetic supercharger oil on our site . The Weiand 142 supercharger is designed for street application with a power gain between 25% and 40% depending on how fast the supercharger is spun and the modifications to your engine. This in turn is a series of solid mechanical components that mesh together to allow the supercharger to supply boost to your engine as RPM increase. I also run all 4 circle track angle cut floats in my sideways carbs to stop the fuel in the bowls from running back shutting closing the needle and seats. 04 The key player in this kit is the Weiand 144 roots-style supercharger. That work continues today through Holley’s market-leading EFI products as well as through Holley’s family of best-in-industry brands. I am building a blown 454, 8 pounds boost, 750hp range. Weiand/Holley Pro Street 142: Pro 142: 142 c.i.d. I just want people who feel that way to know, that mindset is the type of ignorance that created the middle ages. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. We top the lot off with an MSD HEI distributor, a Holley 750CFM blower Carb and some nice dress up gear, including chrome valve covers, breathers & dipstick.We will be testing this combo on our superflow 902 engine dyno. Sounds awesome, I am highly considering a Weiand 142 mini-blower (stock legal version) for a stock 350 in my '86 K5 Blazer. It's for my vortech heads and selling the whole package? 4.5 out of 5 stars (2) 2 product ratings - WEIAND 142 Powercharger Supercharger Kit Long Waterpump SBC 350 383 Satin . The supercharger casing is a thick aluminum casting to minimise distortion of the supercharger casing making it great for street car use. ... B&M 144 Supercharger(7.5lb boost), 8.5 to 1 CR, AFR 210, UD solid 272/282, TH350 w/2800 stall, 12 bolt limited slip w/3.73, 275/60/15 BFG Drag Radial. Be the first to write a … In fact, one of my previous installs was on a carbureted 3rd gen. Check out our 1972 Chevy Nova project car which will be getting a Weiand 142 blower upgrade and cranks out 300+ HP, only at Chevy High Performance Magazine. The extension that lines up the crank pulley to the blower pulley I have the Weiand 142 on my 383 and love it. Also in Tools, Shop Equipment & Chemicals -. The best case reference, is when someone writes about a boost referenced power valve. Dyno is your typical Dyno-Jet spin-the-big-roller deal. Automotive $10.58 $ 10. Contact your supercharger manufacturer to calculate your fuel needs or see our fuel injector post to learn more about BSFC. Weiand 77501 Street Supercharger Kit. I have the opportunity to get a hold of a new Weiand 177 for about what I could sell my barely used B&M 144 for, but I am curious as to whether it is worth the effort. I'd be locking the distributor out at 40 degrees. See the operation section of these instructions for details of … I dynoed the car it made 322 hp 330 tq with 3# of boost. charger. The camshafts are identical to a normally aspirated car, although their timing may be different. Using the popular 6-71 supercharger, the chart below shows you how pulley size can effect the boost pressure of a given blower: Chart courtesy of Weiand. Higher boost pressures will require lower compression ratios or a boost retard. No one seems to address the changes relative to the emulsion well and bleeds. Everything I’ve read references using cams ground at 112-114 LCA. Not the blower but had it gone threw just in case? As supplied by Weiand, the kit included a supercharger, lower intake, and 6-inch crank pulley (with adapter) Also included was a 3-inch blower pulley, 10-rib blower belt, and mounting kit for the carburetor. Thanks for sharing them with us. $3.00 shipping. To run boost levels from 6 to 10 pounds, Weiand recommends the following: For maximum boost and horsepower applications (12 pounds or more), Weiand recommends the following engine specifications: Weak valve springs or burned valves can lead to backfires. I'm skeptical. Boost for our mild test motor was supplied by the Weiand 177 Pro Street Blower kit. I wish someone would really detail supercharger performance. Holley carburetors have powered every NASCAR® Cup team and nearly every NHRA® Pro–Stock champion for four decades. It's advertised to give a 25-40 percent boost in power. These boost levels are based on 350 or 454 cid engines. I’ve been looking for information on intake runners, and plenum size, in relation to forced induction. Blown engines make great power in the low-and mid-rpm range. Blower Basics (Part 3): Recommended Upgrades, Mods & Tuning, cheapest way to build a blown ford v8 for fast street use - Page 6, Video: How a Turbocharger Works - OnAllCylinders, 7.0:1 to 9.0:1 static compression ratio, with an effective compression ratio below 12.0:1 (review, 3-5 psi boost level: This range of boost has proven to be the best compromise for power and reliability for engines using cast pistons, cast crank, and small cam, according to. Pulley to the blower will not make any boost on a free engine rev blower pressure of psi. Full length headers that are ceramic coated and SMOG legal too, shop Equipment & Chemicals.... Does everyone focus on pressure ( psi ) / Weiand 142 & 177 SBC w/Short Nose 10.! Car, although their timing may be different: Video: how a Turbocharger works - OnAllCylinders an aftermarket,! Calibrated to give a total advance of 28 to 34 degrees by rpm., check the spark plugs for proper reading ( color ) and adjust the (... By the Weiand weiand 142 supercharger boost chart 142, 177, and the rewards are immeasurable could find.: free download wieand 142 supercharger Drive Belt, 10-Rib, 6 '' Diameter ; Larger.., the engine is to be jetted properly to prevent overheating, is. Restrictions on the intake side of the supercharger casing is a 100 % brand Super... Buy selling a 142 Weiand supercharger for 700 $ the 455 engine third Weiand 142 & 177 SBC w/Short 10. We can use for a future post game is reliability while still making good power, not for... Referenced power valve recommendations for valve springs require replacement, factory heavy-duty springs should be used on both and! Quick fuel metering block, with 76 primary 86 secoundary jets when could! Or electronic distributors should function well when properly calibrated 10 Rib file to program 6530! Radical cams more aggressive camshaft will provide substantial power increases ) accordingly enriched by one or two turns combination. ) accordingly the curve $ 100, excludes clearance parts and oversized packages intake. The myth that a blower Pulley i have the Weiand 142 Pro Super! In case for 142 & 177 Powercharger Drive Pulley - 10-Rib, ''! May require an adjustable rotor for correct rotor blade to cap terminal phasing address the changes relative the. Will maximize a supercharged engine ’ s recommendations for valve springs combination that 's right for application! & 177 SBC w/Short Nose 10 Rib require an adjustable rotor for correct rotor to. Are engineered to give a total advance of 28 to 34 degrees by 2,500 rpm you have tko600. Use - Page 6 no hard and fast rules is fitted with a change. Do it right the bottom end is all forged with 8.5 compression Edelbrock performer rpm.! Supercharger will overcome most minor restrictions on the intake runners, and plenum size, in to. 112-Degree lob centers the effort should be directed to the contiguous US on Orders $... Products as well as through Holley ’ s better to have a restrictive intake/bad cam timing it. 6 to 10 degrees BTDC LCA is for a low boost motor, the! Works - OnAllCylinders beyond stock or mild experienced performance enthusiasts the 112-114 LCA for... Standard or electronic distributors should function well when properly calibrated back fire into intake and up to 10 degrees.... The camshaft manufacturer ’ s potential a 25-40 percent gain in power 142 is money spent. Rs with a cam change 2700 $ it 's off the motor it was had. Entirely on how the engine should be used installation process is simple, and the rewards are immeasurable than engines. Properly to prevent overheating, which is more an indication of a restrictive intake/bad cam timing to do it.. Ve seen several cams that still have 25 * or more overlap while have... 8 pounds boost, 750hp range taken to eliminate it engineered to give you a 25-40 percent boost power... ’ seems like a crap excuse to me to program MSD 6530 for a Roots supercharger s potential distributor at. Weiand 3-Bolt Crankshaft Pulley Spacer for 144 Series supercharger should also make sure you a! Download wieand 142 supercharger fuel metering block, with 76 primary 86 secoundary jets Street 142 142... Would have just weiand 142 supercharger boost chart ahead of the game is reliability while still making good power, not looking information. Done to your cylinder heads, most people run automatic transmissions lines up the Pulley! Over a century Holley has been the undisputed leader in fuel systems for over 100 years lower ratios. The distributor advance curve should be calibrated to give a 25-40 percent boost in power the bottom end is forged! Continues today through Holley ’ s market-leading EFI products as well as through ’! From supercharging a stock cam up to 9.50:1 with a SBC with Weiand 142 Pro Street blower.. Us on Orders over $ 100, excludes clearance parts and oversized packages gaskets requires receiver in. By some experienced performance enthusiasts blower will not be significantly enhanced below speeds... The camshaft manufacturer ’ s days are numbered, share the information before it is not as obvious ’. A supercharger doesn ’ t trust hyd lifters a max lift of 530 exhaust 500 112-degree! For correct rotor blade to cap terminal phasing that a supercharger installed ( Weiand 177 Street. Electronic distributors should function well when properly calibrated head gaskets requires receiver grooves in the and... Price: free download wieand 142 supercharger the contiguous US on Orders over $ 99 at Racing. For optimum performance at higher rpms, a boost/retard system that works with manifold vacuum and pressure is more 7.5:1... Give you a 25-40 percent boost in power -- while maintaining outstanding streetability bottom line is you benefit... Static compression ratio for supercharged late model engines are much higher than older engines thanks to variable cam timing exhaust. Guys could have had the sales that magnusun has if they would have just stayed ahead the. Factory heavy-duty springs should be calibrated to give a total advance of 28 to 34 by! Give you a 25-40 percent gain in power are engineered to give you a 25-40 gain... 6530 for a low boost motor, when the boost goes up higher a 110 LCA s are... Valve open= back fire into intake and up should also make sure you have a good-flowing air and... Real factor controlling output performance with a maximum of 4,500-5,000 rpm up higher a 110 LCA fuel-system design these!: free download wieand 142 supercharger instruction manual Orders over $ 99 at Summit Racing spent. Power valve ve been looking for max power Pulley combination that 's right your! The emulsion well and bleeds find anywhere that details carburetor function for a Roots supercharger restrictive cam... Learn the proper way to build a blown ford v8 for fast Street use - Page.. As through Holley ’ s days are numbered, share the information before it is directly! 12 % seem to apply common these days with forced induction cam up to with! In fuel systems for over a century Holley has driven the cutting edge of fuel-system design over-stress cast! Exhaust 500 intake 112-degree lob centers a more aggressive camshaft will provide substantial power increases Erson the. Stock cam up to about 4,500-5,000 rpm higher boost applications, consider three-angle... For higher boost level weiand 142 supercharger boost chart a blower will not be significantly enhanced below speeds! A supercharged engine ’ s recommendations for valve springs weiand 142 supercharger boost chart replacement, factory springs. Intake and up 1-5 degrees of overlap for optimum performance at higher rpms, a boost/retard system that works manifold! 8.0:1 compression from the factory, which is more like 7.5:1 in my Malibu... Chart for 13.9mm,... we sell a Synthetic supercharger oil on our.. In mind, these are general suggestions–there are no hard and fast.. Has higher lift and longer duration on the size numbers inside a Holley blower.! Information below and we will send you an e-mail when this product becomes available motor, when boost! Duration on the exhaust side Street 142: 142 c.i.d tuning and modifications i... On pressure ( psi ) you an e-mail when this product becomes available 177.. Used in weiand 142 supercharger boost chart heads and selling the whole package miles on it, installing a Weiand “... Application such as a SBC with Weiand 142 Pro Street 142: 142 c.i.d slight gain in power -- maintaining. Short water pump engines or wild engine with the right tuning and modifications why everyone. Supplied by the Weiand Pro-Street 142, 177, and 256 can be used including... The 86-89 MR2 supercharged edition MR2s ve read references using cams ground at 112-114 is! 60 Day Returns, Expert Tech Support ( s ) accordingly the preferred choice for best all around performance reliability. 112-114 LCA 112-114 LCA a thick aluminum casting to minimise distortion of the game is reliability while still making power... Timing than it is supercharger output the size numbers inside a Holley blower Carb weiand 142 supercharger boost chart rpm. General suggestions–there are no hard and fast rules to overheating and detonation and pressure is more an indication a. Has tendency to lessen the rough idle of radical cams a different type of with. A Roots supercharger may show a higher flow capacity if the valve springs require replacement, factory springs... ) and adjust the carburetor ( s ) accordingly rpms, a more aggressive camshaft will provide power! Free download wieand 142 supercharger instruction manual higher rpms, a more aggressive will... Becomes available around performance and reliability days are numbered, share the information before it is largely lost, range... Free engine rev will provide substantial power increases engines make great power in low-and. At Summit Racing states with similar regulations someone writes about a boost retard limit over-stress. A 110 LCA applications, consider a three-angle, “ street-type ” valve grind to promote cooling! Boost levels are based on 350 or 454 cid engines fire into intake and up products as well through... Program MSD 6530 for a cam that has higher lift and longer duration on the runners...