Roots Blower (Watch Before You Buy) Blown Budget: Part 3 

I just learned more about blowers in 20 min I don’t have words…….. Thank you,I need to watch it again to absorb it

Man i have wanted a roots blower since i was a kid... never gonna happen but the dream lives on :)

Hey thanks for the knowledge.. We (my boys and i ) just getting into horsepower.. they all played QB spent alot time at it .. looking for something to spend time together horsepower was the answer.. so thanku for all the knowledge it is priceless to us .. Thanku

Excellent video, and well presented. Thanks.

New sub, Very good information bro! I learned a lot!😎👊🏾🌱

very informative video about superchargers. thanks!

I must tell you I thoroughly enjoyed your video. I have been building a prostreet vette off and on for 10 years my set up is a dart little m small block with a blower shop 871. I won’t go into the engine internals just know I have 30 grand into the block and parts. I’ve never heard anything like your video before. I’ve been turning wrenches for over 50 years so I consider myself accomplished this however was my first blower motor and looking back if I would have left the 750 mighty demon carbs alone I wouldn’t have had all these tuning problems. Initially I had a lot of blower surge and I liked that but I couldn’t leave good enough alone so now I’m having tuning issues. The car is almost ready to be body worked for paint. I have an Alston chassis with a fab9 rear with 488 gears and a Detroit locker. I changed all the front suspension to rack and pinion and wildwood brakes all around. Sorry fort the long post, I don’t even know if you’ll get this this far out. Well thanks again and I’ll subscribe.

I appreciate this video. Blowers for what they do, are pretty simple but there are many little differences like what you pointed out. I didnt know the difference on the openings so that was really cool to see. Eventually want to go blown alcohol on the Altered and run 7.50. Liking the videos.

Awesome thanks an good luck this season.

hey there.. just watched and subscribed .. this video good learning very interesting learning about blowers .. cheers from australia ..

Great video. Thank you

Excellent tutorial. Thanks

Manufactured blowers at PSI for a lot of years. Good video.

THANK YOU SO MUCH. I LOVE YOUR RACE TRUCK!!!!

Very good information

You're not wrong about anodizing, its a good idea to anodize the rotors and run all the special stuff you need for methanol when you are running other fuels like ethanol, because some race gas can cause all sorts of problems too. Honestly I had more problems running race gas in the 1980s and 90s than I have running E85 since 2007, and I am using the exact same fuel system parts, engines, and carbs.. the EFI is new to me though, its been a fun experience. I've been running E85 and home made E100 in my Pontiacs since 2007, converted Qjets and Holleys, ran it with FiTech EFI and factory LS EFI non flex systems. I've run ethanol with 8:1 compression all the way to 13:1 in my daily driven 455s and 400s. Currently I am in the process of putting a 6-71 on my Pontiac 505, its a bit small for the engine, but I am not trying to set records, more of a street strip fun toy to make people cry around here. Its a carbon copy of Big Chief's iron block 482, except he has a 4" crank while I have a 4.25" crank, and his will handle 60psi, mine is good for around 30psi or so. The only problems I have encountered with ethanol have been from additives, which vary by region and season. Anodizing is nice for ethanol, but not mandatory, I get zero problems from my home made fuel and it has 5% to 15% water still in it. Jeff Smith, who wrote for Summit Racing's Onallcylinders tech page found the same thing I have, ethanol is not corrosive, but additives can be, and it really depends on what additives are put in with the gasoline when they make E85. My 505 has been running E85 with a tunnel ram and EFI for the last two years, it will be running E85/E100 with the blower too. Because of the additives I will probably pull the blower off in winter and keep it dry inside. All the other Pontiacs I have around here just get parked and the battery pulled for winter. With methanol, you definitely need anodized rotors, stainless and methanol compatible fuel system parts, and the after run oil and all the special stuff. You cannot let methanol sit in carbs, injectors, blowers, or engines. If you don't have all of that and just leave it in there, you will have lots of expensive junk. Methanol and ethanol are quite different fuels, they are not the same thing at all. That temp drop and the added oxygen in ethanol makes lots of power, its addictive. When you can produce your own fuel for 40 cents a gallon from cattails or cardboard, the car thing gets to be more fun and enjoyable. Thats why I got into ethanol, pump gas was $5 a gallon and driving a GTO that got 15 to 18mpg wasn't gonna be much fun.

I got lucky i bought my bds871 for my bbc firebird of craigslist. Complete with 2 950's from New york. Im in Tx. 9 yrs ago. 👍🏻👍🏻

Good info!

Good job mate!

Very educational......

You got a member just for the pup pup 👍

Used to run a 6v71 on my suburban. Hard anodized it and put straight to work.

I built the engine myself, I’ve been building/working on cars for over 50 years. This was my first blower motor and the only problem I’m having is tuning these dual 750 cfm mighty demons. The engine is a 406 dart little m.

Thank You for Sharing !!! Like and Sub...I bought a complete setup for 540 bbc TBS and since last time I built a blower engine was 1980s....lol. Wulf things change a little. Easier to buy rather than milling and the pue deal had me puzzled. Akly Diggers in Chattanooga TN was found to be old friend that remembered me and Linda aka Miss Hurst...lol. Well I see my trust of his company was well deserved. Qfter break in of the engine I will add the 10-71 with a bit of Nitrous to my car for trips to Kroger. I added a ice water intercooler.....but live in the middle of Georgia's worst speed trap. Fun in ,2024 what could go wrong running E-85, Nitrous, blower and 71 yrs old....????

Thanks for this video! Good information!Building a Gm 671 blown 440 street motor.will be 446 cubic inches….but plan to build a 520ci short block so based on the chart, will I be able to use just a stage 2 671 or must I go to the bigger 8-1071?

Great information , well delivered. Can you send me a link to video 1 in this series . I would like to watch them all in regards to blowers and MFI. Many thanks.

Great video , im new to the blower world , got a couple of 64 el caminos and wanna build a low budget sbc with a blower , just for show/street , my question is , i want that whiney blower sound , already got a Pete jackson gear drive , so what blower makes the noisy whine im after ? Thanks !

I just converted 8V92 & on my 351 stroker.. carb adapter is on eBay 175$ but free for me to make if I have the material and time. Good little project but it takes some time. Lots of time. And I wonder why they don't make plates to convert a regular blower to a front discharged by just cutting the Little triangle out?? Instead of cutting the whole square out?? Any lost me on how to measure the length of your snout. You said from the blower pulley to the case but probably ment from the crankshaft to the case correct!??

What goes in VC the two small holes in front of the TBS blower ? Boost gauge plus what ? Thank You for Sharing !!

I used to drive a boat with Detroit Diesel 6V92TA motors. I never new what those numbers meant.

i havent heard anything wrong , ive gone through an 8v71 , diesel blower , lol first one i ever purchased , then i learned all the adapters and fabricating as well , expensive . then i picked up a weiland 871 , for a bbc, still building motor for it , also tripped over a mini 250 fully kitted with carbs and hat, not sure what thats going on yet but it looks good on my kitchan table lol expensive hobby !! and im just a beginner , some of these guys go full bore , blown hemis , twin bbc with 1071 blowers on boats , aparently im in the welfare section of hot roddinh 😂😂😂

Can you run standard GM blower on alcohol no teflon or anodizing, you mentioned it requires race gas so I assume there is bigger clearance compared to alcohol clearanced blower.

Got a question if you can help with injectors trying to figure out with injector size i need for a roots blown 8 cylinders motor i got a 16 nozzle injector plate looking for least 1000hp on pump gas some other fuels im considering for a little more power is sunoco260gtx(98 octane eithanol free)or sunoco260gt(100 octane)or sunoco260gt plus(104 octane)and 1500hp on methanol but thats down the road what size injector will i need what is the formula thanks

I didn't know GMC Detroit made a straight 8 cylinder engine. They used to make a 1 ,3, 4 then straight 6 and a V 6 engine.😮

*Let the Sunshine In...*

Dumb question but ring gap needs to happen for blower application??

What are your thoughts on some of the new generation of Roots Blower guys running a dry case with only throttle bodies up top, then multiport EFI manifolds and injectors down below ? I thought that gas going through the rotors (as with carbs) was a net positive for temps and rotor longevity ? Even alchy guys run injected hat setups up top, so are these guys that want regular ECU tunability and EFI port injection below the blower asking for trouble with a dry case ?

ROOTS BLOWERS 101.

You forgot to mention the C-rotor blowers

Why in hell would anyone spend so much money on these engines and race cars? Winning races doesn't make any money, so what's the thrill of it, bragging rights. RIDICULOUS!! when that money can be used for other good stuff.

You don't need a new dist, just need to add a 1" solid alum plate between the the blower and intake manifold.