Holley: "Carburetors are dead" Edelbrock: " Hold my beer" - The New VRS 4150 Is The Ultimate Carb

so it's about two years ago and i get the news that holly has bought hillborn right i'm like i get excited about this now because like mechanical fuel injection i love mechanical fuel injection and i'm like well they're only 100 miles up the road this this would be a great opportunity to play with some of this stuff and i had all kinds of suggestions i wanted to throw with them too so i call a contact at holly right and uh he's like oh yeah would be great you know we could work with jesus this would be fun we could do this we could do that we'd do the other thing and i told him i said mechanical fuel injection is like a thing for me and he says well it's not going to be mechanical this is what do you mean he says well we're going all efi with the hillborn line and it starts to start to take the wind out of my sails right and i'm like well you know all right i get it you're pushing the sniper stuff and everything else he says our whole line is going to be if i wouldn't of just a few years you know we're phasing out carburetors oh no phasing out holly they're going to phase out carburetors you know at this point i really don't want to talk to him anymore i don't have anything to do with it anymore i'm like now i'm like a little depressed okay and end the conversation actually i haven't talked to him since so about that same time i keep seeing things about edelbrock releasing a 4150 holly knockoff i'm like alright and holly actually does a video at around this time showing a prototype and i'm like oh that's neat you know but it's it's prototype means nothing to me well over the last couple of few days i've seen videos pop up evidently edelbrock is right there ready to ready to start distributing these things they're in production and they're sending out sample carburetors to certain people who've requested sample carburetors i'm not part of the sema pri crowd so i'm like completely out of the loop and if i want one of these carburetors i'll go out and buy one of these carburetors i may actually go out and buy one of these carburetors let's let's skip ahead here so last night i watched a video a really good video uh by on a channel called muscle car solutions and he was one of the people that got one of these production carburetors early production carburetors and he did a dissection of this thing he did a great job i could not have done a better job so it's like i'm perfectly content to say this guy did a great need he did a better video than i was going to do so if you're curious about you want to see what the actual guts of one of these things looks like muscle car solutions excellent video and there are some others out there too but it says okay well since these things are actually being handed out to people they're ready to start selling them so now is the time to talk about it and also like i said companies will talk about like prototypes and then what actually hits the market is is something entirely different well in this case the prototype is pretty much exactly what they're putting out there and it's it's beyond my expectations for sure so let's talk about this holly versus edelbrock thing so to this point the two companies the two styles of carburetor have had two different markets really the edelbrock knockoff of the afb and the avs carburetors are carters and for me on any type of driver car something that i'm just going to take it out and and just you know driver car daily driver or occasional driver muscle car type of car for me the edelbrock or the carter style is a no-brainer i automatically go to them most of i have like four or five cars that have yellow rocks on them why because the edelbrock excuse me all my pretty carburetors are currently like employed on engines so i just have these relics that are sitting on the shelf but they're good enough for explanations so on a daily driver why do i prefer the edelbrock why do i always go to edelbrock a couple of reasons the first is that these things are reliable as anvils i can let one of these culverts sit for two three four five years and i have cars that are like that that just sit for years at a time and then i'll get a bug and i'll work with them and these things are exactly the same carburetor if they sit for two three four five years as they were when you shut the key off okay and the reason for this is there are no o-rings inside of there on the holleys the needle and seat assembly has a couple of o-rings and they will dry out so when those carburetors sit for any amount of time a couple of years automatically you got to start going through and finding little bugs and also these carburetors have idle passages and metering blocks that will clog edelbrocks also have idling idle passages that will clog but they're not in the metering blocks they're very easy to get to they're in the boosters so when maximum performance is not what i'm after just good performance and drivability and gas mileage and flexibility i go with the other box and then of course there's the tuning right because you can literally change the jetting on an edelbrock carburetor without spilling a drop of fuel you can literally change the jetting on a calibration on an edelbrock style carpet or a cortisol carburetor in less time that it takes to take the air cleaner off because it your your drop rods are right under these two screws so side of the road you want to make a change let's say you're going to climb a mountain you want to change it well you poop and you change your drop rods and you put it back together again it takes a minute so as opposed to on a holley way you got to pop the float bowl off so that's why these things have always been my go-to but now when you talk about ultimate performance different story entirely because the carter edelbrock afb avs style carburetor doesn't have the ability to flow like a holley does now you take a 600 these are both 600 you take a 600 holley and you take a 600 edelbrock you say oh they flow 600 cfm right no they don't it's a theoretical it's a theoretical computation that they make i would need to learn ancient hebrew and study the kabbalah to find the exact methods and and systems that they use to rate these things they are not the same and and the the essential the reason is in their basic construction hollies come in two varieties mechanical secondary that has a second accelerator pump on the secondary side or vacuum secondary which gradually opens the secondary side of the carburetor so with the throttle open let's see with the throttle open you can see there's nothing there but a booster look in there it's just a booster nice and happy right okay carter edelbrock style you've got this air valve so let's get this open there we go and you see it's got this flapper valve this air valve right so this is the afv version the avs version has an air door like a like a quadrajet over the secondaries but the way these things are built they're not designed for maximum flow they're rated at 600 cfm but a edelbrock 600 cfm flows more like a 450 or 500 cfm holley the biggest of these edelbrocks is 800 cfm that flows about the same has about the same characteristics as a 600 cfm holley so once you've got to that point you actually need carburetor you run out real fast with the afb style or the edelbrock style and then you go to the holly and the go-to holly for performance once you get over that 650 so cfm is the 4150 style which is a design that goes right back to the 1950s it's like the original holly design these things are everywhere they're universal they're they work um and these start at what i think they started 650 cfm there might be a smaller 4150 i'm not aware they start at 650 750 850 950 the 950 is not really a 950 and we'll talk about that in a minute so these cardboard is a universal this is the universal go-to carburetor now edelbrock to this point has been stuck with that street street rod muscle car driver type of carburetor now with this 41ft their version of the 4150 it is so superior to the holly product in every way it's like the holly now now don't get me wrong there's been lots of evolution on a holley for the last almost 70 years okay lots of evolution and lots of of of knock-offs different companies um there's one of them fps i believe it is i don't even know they do some really nice after-market holley carburetors refinements of the original design but edelbrock with this 41 with their version of the 4150 completely reinvented this thing but maintained all of its qualities and characteristics they were going to be available in this same same lineup as a holly's 650 750 850 and a 950 which is actually a true 950 as opposed to the holley 950 which is actually in 830 which is smaller than the 850 again it's kabbalah stuff right so let's talk about the 40 the uh the edelbrock 4150 since i don't have one here we'll have to just go off of off of what i do have all right so they're only available in a race version meaning that there's no choke no choke tower and that's good because their street version is filled by the older style the edelbrock the edelbrock carter afb avs so there was really no need for a street version of this new 4150 so right off the bat they all come with no choke tower and a beautifully contoured air horn the boosters are up higher the actual the thickness here is an extra half of an inch so it has an advantageous profile to the boosters and the boosters are up higher it uses an annular booster i think they're interchangeable like in other words like they'll have they have all different boosters that you can stick into the body whereas on a holley it's a major operation to change the booster these things are going to be snapping in snap one in stop one out whatever your application happens to need instead of having a two piece body like this like these do so you got the main body and then you got the base plate on this new edelbrock it's one piece and that's good because i think they did that because these main bodies here are prone to warpage where they meet the metering blocks and by making that making it one piece one billet chunk you're you're strengthening this whole area over here so there's less chance of these things deforming over time another interesting thing that they did was they the the hollies all use a quarter 20 stud for the air cleaner they went to a 5 16. i said why they do that well because if you're going to do an ultimate carburetor in today's world you have to take into consideration blow through applications lots of boost carb hat right well with the 5 16 you can actually secure the carb head down with a quarter 20 you know it's it's sketchy at best and you have to well you can drill and tap it there isn't a whole metal around it so i thought that that was interesting air bleeds right how many air bleeds do you want the new edelbrock is so ridiculously adjustable i you okay this carburetor was designed by somebody who spends a lot of time fine tuning stuff on the dyno it has far more adjustability in the air bleeds and in the metering block than any normal hot rodder or drag racer is going to ever need like i said there was like a dyno nerd was like dialed in on and incorporated into the design of this carburetor over adjustability i i guess it's a good thing right but you know in the air bleeds it's got it's got circuits up the water and they're they all have easily removable changeable jets if you wear with the holly you you you have to go okay the real difference differences and you see where they were thinking like this is real forward thinking the real differences are in the float balls all right so the float bowl the bowl itself is 20 larger right so it has 20 percent more capacity they added a drain a drain fitting plug so that you know you want to pop the the bowl off you don't have to make a mess although it was never really necessary you just pop out one of the bottom screws and they drain out anyway but that's besides the point it's a nice touch they added a drain plug over there 20 more capacity and then right so all right so a lot of people go to the efi because of the demands so forget about drag racing forget about muscle cars forget about drag racing a lot of people go to efi because of the type of thing that they do off-roaders rock crawlers autocross guys um circle track people they'll go to road race they'll go to a efi system because fuel slosh is an issue well they really went nuts inside the bowl with this there's there's a shelf right an anti-slosh shelf the bowl the float itself is contoured everything is designed so that during hard cornering or things start to get crazy like that it won't affect the height of the float during hard cornering all or that type of maneuvering all the fuel will want to go to one side and it'll push the float up even though it's not full of fuel so it'll push the float up shut off fuel flow and i'll starve the motor real fast so by contouring the float with those those chamfers on either side it can go like this and the bowl maintains or the float maintains its correct height they also added jet extensions which is something that you would do on a aftermarket this was a modification you would make on a regular 4150 on the secondaries because as you accelerate the fuel wants to run away from the jets so you add extension tubes to you know okay on on the 4150 they're already built into it and the bowl the float itself is contoured to clear those jet extensions like they really thought of everything with this what else what are the major features with it it's got a tps a lot of guys use an electronically controlled transmission and it'll use that gm style tps well the edelbrock has a tps mount takes the regular standard gm that three pin tps it's already there on the carburetor so you don't have to well the tps itself isn't on the carburetor but the provision for it is there i wonder what they've got on theirs so what else is that four corner idling uh just overall it's it's like every shortcoming and i i know i'm going to think of other stuff after i'm going to shoot this video i'm going to put it out i'm going to think oh wait there's like 10 other things we're going to do more on this cardboard i'm probably going to buy one when they become available i think i'm going to get a 950. uh but let's let's let's wait until they're out there and they're not priced too bad i believe they're around in in the 800 700 800 range so they're they're actually they're not cheap but they're not extremely expensive either oh one other thing yeah see okay a lot of times you get into a bigger cam right you get into a low vacuum situation and in order to get the motor to idle correctly you've got to open the throttle a bit right you open the throttle stop a little bit and it'll idle where the blades are up in the transfer slot now you get this fat disgusting idol so one of the things that you have to do to correct that is drill holes in the throttle blades on the primary throttle blades so it'll let a little extra air in edelbrock with this new 4150 they added air bleeds external air bleeds so just just for idle air so this way you don't have to bother you know if you've got a really low vacuum situation and the thing is and it's fatter all you have to do now is just adjust the idle air which is something that goes back to the original afb style carburetors because they had a similar similar setup where you didn't make your idle adjustments off of the throttle over here you did it off of an air bleed that was at the front so that's edelbrock who did carter taking one of carter's old ideas and putting in this futuristic 415 it's exciting stuff carburetors are not dead this thing this new line of carburetors oh see one other thing i keep forgetting about this stuff the base plate has an odd shaped pattern here right instead of just having a round circle it's it's got like a you know like a i can't even describe it but it's an oblong deal and that's so that this will bolt on both the standard 4150 style manifold and a dominator style manifold and i can't i guarantee they've got it once these things are in in the loop they'll have a dominator style on the market too interesting stuff the carburetor is not dead and this new edelbrock 4150 is a game changer right i can't wait to see them in action i can't wait to see if and what holly does to con to counter it but as far as i'm concerned now no matter what you need if you've got like a 283 chevy that's going to be just in your in your cruiser your you know your your sunday afternoon car right carter's gotcha although i don't i should say edelbrock has got you with the carter style carburetor your drag racing your off-road racing your your your auto crossing you've got a full race thing now they've got you covered with this series so edelbrock is becoming one-stop carburetor shopping and i don't get paid for them and i don't want their products for free or anything like that when something is good it's good and i think that this is really good and that's it i hope you got something out of that i'll see you tomorrow

Channel: Uncle Tony's Garage

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Id: etj8jPviGmQ

Length: 20min 2sec (1202 seconds)

Published: Thu Sep 01 2022