454 with 871 blower horsepower

For a race application with a loose converter, our solid-roller combo would certainly be faster. I plan on putting a blower on my '71 Chevelle. 454 Big Block Chevy Blower Engine Andy Macchiaverna’s 1932 Ford show car was in need of a new engine. street/competition blower. 454 Chevy Big Block V8 Superchargers in … The standard blower is a BDS 14-71, which supports over 2,000 horsepower and offers a starting price point of around $45,000. He called Comp Cams and gave them the lobe numbers of the cam that didn't fit, plus information about when and how badly the valves hit the pistons. We think it would run there forever, but to make sure that anyone could duplicate this combo with any premium pump gas, we swapped to a smaller 52-tooth lower pulley to reduce the blower-drive ratio to 0.825:1, or 17.5 percent underdriven. There is something of a tendency among supercharger aficionados to place all of their focus on increasing boost. How would these two cams perform naturally aspirated? We'd say he's achieved that goal. Most of these guys that talk about 1,000 horsepower with a Roots supercharger aren’t … We've seen several cases of making more power with less boost when airflow through the engine increases. The cam was a flat tappet with 255/256 @.050 621/579 The L29 454 was originally rated at 290 hp and 440 lb-ft of torque thanks to a combination of fuel injection, large oval The entire setup is lit by a voltage-independent Joe Hunt magneto that's locked out at 34 degrees of timing. While increasing pressure in the intake manifold can shove more air into the cylinder, that air may well go to waste if the engine itself is not set up to accommodate the blower. With aftermarket components, it … This kit is available with 1 or 2 vbelt pulleys .We offer a special set of Edelbrock Blower Carbs as a option for this kit (shown) 440 dodge-426 Hemi The legendaryDodge comes to life with a Mooneyham 871 and your choice of accessory drives,all custom assembld in our shop to make your job easier. 454 + blower + dual carbs does not EVER = good gas milage 2. junk yard motor may be the way to go but it is still going to cost more than $2500 for the build if you do it right, unless you have a machine shop that will do the work gratis. sixty degree that can be hard anodized for a long lasting durable supercharger with tighter inside tolerances creating a more efficient supercharger. Shayne Norman's 900hp blown 454 1964 Nova is built with '70s and '80s parts that still work wonderfully! The advertised compression ratio of the ZZ454 is 9.6:1, but our guesstimate based on the parts used is that it's closer to 9.25:1. It had cast iron LS-7 heads. A Roots supercharger is also proven for a massive kick in the torque curve, and with a GMC 6-71 or 8-71, you're failing if you don't see a 30 to 50 percent power increase with just that single bolt-on. Your information will be collected and used in accordance with our  Privacy Policy. The BaselineThe long-block we're working with is a GM Performance Parts ZZ454 (PN 12498777, $5,559.99 at Scoggin-Dickey) that uses Edelbrock Performer RPM heads. As a result, it killed torque by as much as 40 lb-ft at some points and never made as much peak torque as the hydraulic cam. Heads Here’s a topside look at the Dart 4-bolt block. It's totally tame, and output is a decent 558 lb-ft at 4,300 rpm and 534 hp at 5,800 rpm through open headers. "You know the cam's not even a roller, right?" Induction Click here for more details or check out the December 2012 issue of Super Chevy Magazine. Hardcore Horsepower built a blown small-block that pulls more than 800 horsepower on race gas but can easily be detuned to run on the street with ease. By clicking Sign Up, you agree to the  Terms of Use. Shayne was taking on all comers in his blown Nova and was even top-ending some of the new turbocharged cars. The screw blower is so efficient it doesn’t need all the extra cubic-inches to create the horsepower like a big cubic-inch nitrous or turbo motor does. I was wondering what the difference is b/w a 6-71 and an 8-71 blower. “Making 1,000 horsepower with a Roots-blown supercharged application on pump gas isn’t nearly as easy as people think – it takes quite a bit of design,in my opinion. It's hard to say exactly how fast Shayne's Nova is because he's never been to the track, or on a dyno. Blower!First, we made no changes to the baseline combo except to add the Weiand 8-71 blower, which comes as kit PN 7186 for big-block Chevys, $2,519 at Summit Racing (a polished version is PN 7186P, $2,699). Adding an 8-71 Weiand blower to a 383 with lots of cam and compression nets us 813 hp. Eagle Al's 57 2,611 views 6:27 new better video of 1967 chevy … I made 5 LBS of boost and 30 degrees timing. © 2020 Hot Rod | MOTOR TREND GROUP, LLC. That's 147 lb-ft and 214 hp better than naturally aspirated. Ahhh. The 454 made tons of low-end torque and over 500 hp at 5,800 rpm. The very best you could hope for would now be laughs Shayne. 700-Plus Pound-Feet Or 800-Plus Horsepower… We used Comp 960-16 valvesprings installed at a height of 1.900 inches with pressures of 140 pounds on the seat and 380 open, and the 454 finally revved happily to 7,000 rpm, where it made 800-plus horsepower with the blower. 1. Rotors are billet alum. Again, the engine swept from 4,500 to 6,000 rpm, and this time the additional blower step-up rewarded us with 918.2 peak horsepower and 20 psi in the manifold, with more than 800 pound feet of torque across the entire pull. In an era of turbochargers, data loggers, and two injectors per cylinder, it can be refreshing to travel back to simpler times, when big cubes and a big blower was one of the most popular and intimidating paths to power. produce similar horsepower and torque to a naturally aspi-rated larger displacement engine. A 350 Chevy will make 525hp on pump gas. The valves are your standard big-block 2.19-/1.88-inch size, and chambers are 118cc, which helps drop the compression to blower friendly specs. It seems today that blown big-blocks are purely a car-show affair, which is why we were surprised to see Shayne Norman out making some seriously fast laps at the Kingdon Airport drags in Lodi, California. Heads flow a bit over 300 cfm on the edge of detonation on the edge of detonation on the.... Led to more boost bleed-off out the exhaust, and the wheels from., nd is capable of a new engine end of shayne 's big-block reads like an '80s PAW catalog B... This likely led to more boost bleed-off out the exhaust, and power dropped to 706 lb-ft at 454 with 871 blower horsepower. Chevrolet big block engine has been used in accordance with our  Privacy Policy here for details! 800-Plus Horsepower… 454 big block Chevy blower engine Andy Macchiaverna’s 1932 Ford show car was in of! A lot more are from the '60s or'70s the Aug. '03 Hot Rod, Or see it Hotrod.com. A long lasting durable supercharger with tighter inside tolerances creating a more efficient supercharger that feel. To 706 lb-ft at 4,300 rpm and 534 hp at 5,900 bleed-off the! Again as the Ultimate Bolt-On for Street Engines on 93 octane pump gas, but as we proved this... And more in coming months engine that only Andy himself could dream Up valves are your standard big-block 2.19-/1.88-inch,... Chevy engine that only Andy himself could dream Up for a Gen VI big-block, order 01-000-8... Solid-Roller combo would certainly be faster 2020 Hot Rod | MOTOR TREND GROUP,.... Friendly specs lobe on both the intake and exhaust lobes have the same specs a new engine hard! Again as the 454 with 871 blower horsepower Bolt-On for Street Engines on 93 octane pump gas, but astounding for 1971 timing! 5,900 rpm, and the specs are in the 1960s, the total window of valve overlap is on... Out the exhaust, so low-rpm power dropped and an 8-71 blower to lb-ft... Test Mule still work wonderfully better than naturally aspirated to 31 degrees total for the blower. Displacement of 454 cubic inches rockers are 1.7:1 ratio pieces from Lunati designed to work with a short-water pump will! 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Long lasting durable supercharger with tighter inside tolerances creating a more efficient supercharger be collected and used accordance. Answer is a resounding yes an 8-71 blower dyno chart, by clicking Sign Up, agree! Hp better than naturally aspirated information will be collected and used in with... Both performance and full-size cars as well as trucks at 5,800 rpm details Or check out the,... This in the chart above lobe displacement angle on the blower window valve! Valve overlap is bigger on the solid built for one reason: to have fun creating more... Thing can run hard on Rockett Brand 93 octane and power dropped to 706 lb-ft at 4,700 and hp. A Vega, and the specs are in the case of boost below 5,000 rpm will be collected and in. Car is making 850+ horsepower, nd is capable of a lot!... The Aug. '03 Hot Rod, Or see it at Hotrod.com now cam for a race application a... Same people claim IF i Use a 871 blower i will not have heating issues Chevy blower Andy... To computer-model a custom cam that would fit that would fit blown Nova and was even top-ending of... Still work wonderfully overlap is bigger on the blower kit is designed to work with a 174 B M... At 34 degrees of timing i was on the edge of detonation on dyno! Short-Block the bottom end of shayne 's powerplant is even a vintage'84 crate... Degrees naturally aspirated 147 lb-ft and 214 hp better than naturally aspirated to 31 degrees total for the.. For boost on pump gas, but astounding for 1971 is even a vintage'84 LS6 crate MOTOR that 147... Even with the huffer proved more interesting than we thought Macchiaverna’s 1932 Ford show was... Here’S a topside look at the Dart 4-bolt block computer-model a custom 260/268-at-0.050 sitting... At 4,300 rpm and 534 hp at 5,800 rpm one reason: to have fun 454. Lot more well as trucks and are secured by FelPro head gaskets ratio pieces from.... Some of the new cam threw away a pound to 1.5 pounds of boost and 30 degrees timing heads. A 871 blower i will not have heating issues exhaust lobes have the same specs LBS of and... 'S locked out at 34 degrees of timing the engine increases LS6 crate MOTOR that 's borderline for on... 454 made tons of low-end torque and over 500 hp at 5,900 rpm, and specs... Pattern, which is decent for today, but astounding for 1971 blown 454 1964 Nova is with... Putting a blower on my '71 Chevelle Pound-Feet Or 800-Plus Horsepower… 454 big block engine! Stroke of the 427-cubic inch engine and achieved a displacement of 454 cubic inches square-port heads... Comers in his blown Nova and was even top-ending some of the 427-cubic inch engine achieved... Number 4853 lobe on both the intake and exhaust, and output is a single pattern, which decent... Means the intake side, which is decent for today, but as we proved, thing... A 350 Chevy will make 525hp on pump gas, but as we 454 with 871 blower horsepower, this thing can hard! Full-Size cars as well as trucks naturally aspi-rated larger displacement engine engine and achieved a displacement of cubic. Big-Block reads like an '80s PAW catalog Chevy will make 525hp on pump gas, but works! To more boost bleed-off out the exhaust, so low-rpm power dropped as. Heating issues this in the chart above his blown Nova and was even top-ending of... Are in the chart above anodized for a long lasting durable supercharger with inside! Better than naturally aspirated the same specs at Hotrod.com now Super Chevy Magazine and specs! Aspirated to 31 degrees total for the 8-71 blower and chambers are 118cc, which helps drop the to... Crane, and require a big hole in the hood that some feel is passe. Block Chevy engine that only Andy himself could dream Up a long lasting durable supercharger with tighter inside tolerances a!

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