Totally Streetable 800 hp 87 Octane BB Chevy
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- Опубликовано: 13 июл 2024
- In this, episode 62, DV together with the guys at Terry Walters \Engines in Roanoke were asked by GM brass to update the street 572 BBC crate motor. They went from 620 something to 800 and something HP with a shorter cam. This, plus the carb and intake tests here show how it was done. By watching this you could find out what the best, streetable single plane intake is and whether or not to use a 950 cfm 4150 HP carb or a 1050 Dominator for the best low end.
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I can't believe I'm hearing this guy speak in real life. I've gathered so many of his books over the years.
Ikr
When I saw him and Terry Walters build that 555 made for 87 octane, and 700+ HP, this 572 in the 800's is an easy step. This guy has this cam stuff figured out!
David thank you for the complement on my video yesterday. Mr. Vizard you sir are an inspiration and I will continue to recommend your content on my channel. the first books my father had me read were, david vizard how to build horsepower vol1 and smokey yunick's power secrets so I have known of you for 25+ years.
Adam, You are more than welcome - please post a link here for your channel.
Take care,
DV
@cattledog garage
my condolences on the loss of your beautiful and smart daughter Mr.Vizard
Sorry for you loss David. I know little about your daughter but I have read about her. Quite the Engine builder Just like her Father and a great driver too. Thanks for another great video. We all enjoy such knowledge from such an incredible master of his craft
Thanks for another great video, David. You’ve blessed me with abundant knowledge on how to make big HP! I’ve been reading your books since the 80s. God bless you
Thank you professor! I Rebuilt my first small block Chevy 350 in 1979 using your book that an old guy at the parts house tossed me and said before you turn a wrench READ THIS BOOK!
You better belive he has this cam stuff figured out, WE took one of JJ the Boss"s old 585 motors dynoed it. then had david spec a cam for it. we did nothing but change the camshaft. The horse power didnt gain much But we gained 99 foot pounds of torque. Pretty impressive id have to say.
Wow! Low to mid went up I assume?
@@marthamryglod291 All the way thru the RPM range. really came on in mid range,
Sorry for your loss David. I lost my daughter in 2003 and just feel it in my soul when I hear of others loss.
Gary, you more than most will understand how relief from such grief can be of such great value. Take care of your soul and spirit.
DV
Sorry for both or your loss, I couldn’t imagine having to go on without any of my children……god bless you all!!!
You're great, love you & your video. You tell us a little history and what works versus other matching products, you tell us quickly enough enough so that we are confident and satisfied and what you said, you're the best.
Some engine builders I really have no time for small talk and then you don't really feel good but you can get some basic q&A things answered to feel great and confident, so we really love
Great build and fantastic video.
Thank you Mr. Vizard for your teachings , your a complete master !!!!
Another great video David! God bless!
I could watch these videos all day long. Thank you David.
I always enjoy these videos thanks
What a motorsports and engine technology legacy.
Thank You.
David your work on the carb Pic looks great
Thanks! All of your videos are appreciated and thanks for letting us know about the St Jude donations. They are my favorite charity by far and I am honored to donate to them in your name.
really like the fact based videos with all the test gear, ect.
Thank you again David for sharing your knowledge and my sincerest condolences about your daughter. I'm still saddened about her passing all these years later and still remember hearing the news through the grapevine. God bless.
My favorite automotive tech writer!
Thank you so much for your efforts over the years Mr. Vizard. I have gained so much engine building knowledge from your books and editorials. St.Judes is the best, happy to help.
Thank you for your latest chevy book
You and Andy are my favorite channel’s. I’m buying all your books. Thanks to you two I went out and bought a 49 ford 2 door the OG shoebox, the body is pretty minty. It does have a running truck 351w but I do have more 400chevys then I know what to do with. 🤙🏼
Your a good man God bless you and yours. Thanks for sharing.
I wish you long life and good health , I would love to meet you someday thank you for all you do.
Great work!
Pretty lighting on the carb shot.
Thank you for sharing your knowledge David. I have 6 of your books on the shelf. Your technical knowledge doesn't need fancy editing, theatrics or sound effects. I find those things distracting and a net negative and the same goes for the on-screen misspellings. I just want to see your production team rise to the same level as you have.
Sorry for your loss. I've been down that road too. No way to explain it to people. Just try to do your best to cope and live out your life.
Great job , keep it up
Thanks!
Appreciate your knowledge
Thank you David.
Really enjoy your videos. Would really like to see an ultimate induction that will fit under the hood of a Corvette, Camaro, etc.
Good Luck on a ‘vette. Chevy couldn’t fit the LS-6 under a BB hood without changing and loosing power due to the intake.
Thank you, enjoyed the videos
Thanks for video!
Thanks for sharing i will find your BBC Chevy Horsepower book of knowledge!! I run 496 & 505 !!!😊😊😊
Thanks
David
It would be a blessing to trash can that screeching 🎶 music. THANKS
Curtis, may be I should tone it down some.
Wish i had learned about this guy 20 years ago.
Good job. Take a bow.
Thanks!
Thanks
I have been donating to St Judes for 20 + years
Good for you Darwin.
DV
Rember your not alone
DV; Thank you very much! v/r wh
Very good thanks…
White wizard, there is much more to come. !
I would like to see the AFR curve with each carby swap to see how they relate to the HP and and especially the TQ curves.
Richard Holdner did an afr test and it isn't worth more than a percent from 11.5-14:1 max power was around 12.5:1
May your daughter Rest In Peace and
Your memories of her comfort you. Jim McGee
David our heart breaks for you.
Thanks Jim - I mean really -thanks. Never a day goes by without her presence in my thought's.
We're all at the pump gas mercy limit.
Bv
$5.00 Amazing how it all comes together when the components are well matched.
Yes but more to the point thanks for you donation Thomas.
I'm going to have to order your big block booķ.
My friends standard bore 454 with a tunnel ram two 650 carbs and a roller cam this car went 7 90s at 170 mph with unported brodax heads twenty five years ago
Yes - but would it pass GM's 100 hour WOT endurance test?
@@marvingvx1 I don't see why it wouldn't, the engine was freshend up one time in its lifetime the engine is now in a street car to this day
@@terrygrover6440 one hell of an engine there. Fast and reliable
Wow
Impressive. What was the power and car weight? I love big blocks, massive power and torque when built
There's a spookiness vibe to the video..... maybe the music or something else?
Never substitute for second best always go with the Vizard of all knowledge
Can you do a Holley carb video. Like what you look for in a carb for a street strip type setup and maybe how they compare to edelbrocks new 4150 style carb they came out with.
Bedankt
Big thanks Dennis!
I would like to hang around this guy for a while, I would be like a sponge and absorb as much as possible which I probably wouldn't be able to hold it all because my storage space is a lil smaller than his 😂🤣
David, I am aware of several "St. Jude's" programs, all dealing with youth and youth problems. St. Jude's Hospitals are a sure fire topper on any list, but are you aware of the St. Jude's Home for Boys in Colorado? A late friend was co-ordinator there for many years- Father Herbert Ward, whom I met as 16 year old youngkin in New Orleans- a friend I wish had had a greater hand in me- not all the losses are to the young, some are losses for the young. Be well, be strong ! FR
David, do a 2500 hp cadillac 500. Yes the block can take it, Bloodviking
This might be a lil long winded as one is a question and the other is more of a point. I have purchased your book but have not had time to read it yet. I read somewhere else that the most you can get out of a stock block is 515 C.I.D. I was wondering if there's any truth to that? The second is more about their maybe other children involved which makes it even harder on the parents if they lose one. Thank you for sharing the information as you really don't have to. Last but not least Happy Father's day🤗.
Lynn - as ever I always enjoy hearing from you and you are a guy who consistently makes thoughtful comments.
@@marvingvx1 thank you kind sir but I'm still not a male😆. Well at least this time you didn't have any visible mishaps. I hope this means someone is keeping an eye on you🤗.
@@lynnrunningdeer7364 that’s pretty funny
@@trentdawg2832 how so????
You are right about losing children but unfortunately in my case I've also lost my right leg and if you need proof, I would gladly show you that my leg is gone, ever since September of 2020 I've been an amputee. I still can't afford a prosthetic leg so I'm just stuck riding around in my wheelchair at the age of 43. I was a automotive technician prior to this horrible experience and only desire to be able to work again.
Landon, sorry to hear of your predicament here. See if you can put your skills here to some good tech posts and if that works lets see if we can do a Landon Thompson episode of PowerTec 10.
Take care and keep that wheel chair speed under 50 mph - pleeaaase!
I'm building a 396 bbc, it's 11.0 to 1 with oval port semi closed chamber factory heads. I want to run a roller cam comparable to an L88 solid cam.
WHY ARE YOU BUILDING A 396 - IT MAKES NO SENCE. YOU REALLY NEED TO READ MY BB CHEVY BOOK BEFORE YOU WAST A TON OF MONEY!!!!!!!
Wow I didnt know there was a donate button
👍👍👍
David, Can the scavenging force created by exhaust be so strong as to create bearing/oiling problems, if the vehicle cruises at 3800 rpm with 22 in manifold vacuum?
800 hp on a n/a motor with small cubic inches ain't easy. 427 and 496 are small by today's standard. But 4.6 aftermarket blocks are costly. But easier to get 800 hp from. 4.6 bore 4.8 stroke will do it. Then turbo it for 1250 hp.
Bloodviking
Dammit, I went from number one on the likes button hit on the last 2 videos to number 39 on this one…
With a shorter cam and greater cylinder filling on the bottom of the rev range resulting in more torque, how did you stay out of detonation below the torque peak?
Where can I purchase the cam program used and what are the specs for this cam
How do you compare the profiler manifold to the new CID manifolds ? The CID is getting all the instagram/ youtube glory. I would like your professional opinion on their intake and heads.
Are there any good cam guys left??? RIP Jackie God Bless DV RIP UD Harold
Thats what i need for my 74 C10 LWB. lol😂
4.8 with a vortech centrifugal supercharger is all my 1973 c10 swb needs…….thing flies
Good video. I only seem to have sound from the left side of my PC's sound system. It doesn't ruin the video by any means - but is it just my setup or is it that way for everybody ?
Yes Patrick - I am looking into that.
Same.
Would like to build a 540 inch for my 1970 Corvette. thanks
Check this site out - it's new, it's hosted by Adam and is coming along just fine --Cattledog garage @cattledog garage
Try hitting that number without high rpms or large cubic inches, Bloodviking
The problem is 572 is 17 grand before you work it. I need to do it with the readily available 454 block not some over the top motor that never came in any factory chevy
You can with a twin turbo set up on 91 octane. 11 pounds of boost with intercooler.
Bloodviking
Big bucks at 500 plus cid
What was the vacuum number on your cam also how was the idle as im sure GM chose a cam that would work all around. how were you measuring knock being on 87 octane detonation is a big worry
My cam had less overlap than theirs and idled better and sounded like a real tough guy at WOT. We had a regular block sensor for knock but never saw any even with the timing 7 degrees too far advanced.
Longer rods reduce detonation and higher compression can be used.
How much horsepower is a ported Q-Jet capable of on a 421 SB CHEVY.? Using a 1979 800 cfm ported as per your book?I'm sure you won't get many other requests.
My guess here (note - guess) - is about 700 hp
@@marvingvx1 Thank you!
One statement, one question. GM chooses the cams for different reasons than you are, cost, availability, reliability, then power, probably in that order. Did you run a air flow meter to see how many CFM the motor was actually using? Or a vacuum gauge in the manifold to see if there was still vacuum at WOT? Great test, keep up the good work
My cam was better in EVERY respect so really there was no competition. A point to be considered here is that the same company ground both cams!
Get the IOP Program.
Please tell us cam specs sir. So sorry for the loss of your daughter David..😞
This channel is dead for now, find his other channel called David Vizard.
cam specs?
Boggles the mind that 800 hp can be made with a 9.5 ratio
572 inches bro, honest 9.5 ain't weak.
Dear Mr Vizard I have the utmost respect for you having followed your work since 1975 … But, somebody has to tell you to “Loose” the first 1:57 of this video. A Simple welcome, from you is all that is required. The American bells and whistles, fanfare and flashing lights are painful. Why is it in the USA cars shows (and engine videos etc) have to have loud music or heavy metal guitar tracks …… we’re interested in what you have to say, not the painful “windows dressing”. Please don’t take this the wrong way and please continue the GREAT work.
He could just not share what he knows for free. So keep that in mind and be grateful for what you're getting. A simple thanks for common decency is all is required. This is being very polite out of respect to Mr. Vizard.
James, I wish all those that want to criticize would do it as politely as you have done here. I have a tendency to agree here but I m still refining my editing skills. Let me know if you think the upcoming videos are better in that respect.
Thanks
DV
@@marvingvx1 I look forward to them, as always, with great interest. Thank you again.
All fine and dandy, but 95% of your audience have 454 - 468 bbc not 572s. All the best.
Joe, 454's to 469's or not they should have still learned something. For more size specific stuff they could buy my book Yes???
@@marvingvx1 It's just that everyone is now going to put a 1050 dominator on there 454 - 468 and expect big numbers when all they'll get is disappointment.
For what you will never be able to use it at the 100 hp so why focus on 800
Your info on carburetors is overly simplistic not reflecting all the variables at play
I've seen people make about 1250 hp on pump gas twin turboed.
Bv
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