Any intake- What about a 8x2 blower top W 671 8 their is not a lot of room between the carbs. 94's wont work because they are too big. I'm using 97's and its a tight fit. -E
A little follow up regarding the pic we posted of the flathead intake with the 3 Demon 98's on it . That particular intake is a H&H piece and Mike and the guys over there have bought close to 40 of the individual carburetors so far . I was speaking with him the other day after they had dynoed one of their motors and they saw some decent hp gains with our 98's over the other 3 bolt stuff.
I guess I should probably say most as we have not seen nor had all of the particular versions in hand . I am still running across new versions of stuff everyday with the old vintage stuff being as rare as it is. The 98's have just a little larger center to center requirement than the 97's so I will post that number so you can check it as well as anyone else thinking about trying them on an original intake. The minimum center to center is 4.440 inches. From our measurements the 97's measurement front to back is 4.75 whereas our 98's are 5.14 . Hope this helps and thanks for catching me on that and I went back in and changed the orig post and gave the reason for the edit.
I think if the carbs were chromed and the intake was pollished ,it would help takeaway the new look.Just my 2cts.I like the set up it looks cool.....................
I am going to post a couple of pics of the dyno screen. These were taken while we were running the Triple Deuce . There are 2 really big things to notice with these.....[1] note how low the engine was able to idle cleanly and [2] notice how even the afr numbers are. On a conventional 4 barrel intake because you have 4 short and 4 long runners these will be all over the map normally when looking at this screen. The motor was allowed to idle for awhile at this rpm as well and we saw the same results when driving it in our test car.
Here's the other one showing the low rpm's . Keep in mind this engine is a ZZ4 with a .230/.236@50 camshaft that would normally have to idle much higher.
The 4 carb set up takes completely different base adaptors to mount the carburetors to the top plate which is like the ones used on the 6 carb . There is a lot more machine time and material required to make these along with the added cost of the additional carburetor , different style fuel rail and fittings . The linkage is also different in that it it much more complicated and has added pieces at the rear to join the 2 sets of linkages.
As impressed as I am with all the new goodies, I am most impressed by BG and the open, clear and honest communication going on here. Kudos
Thanks for the compliment and we always try to be as up front and honest with everyone whether it is here on the forums or taking calls on our tech lines or answering emails. Here is some more inside information for you guys that have been commenting on appearances. We are currently looking into chroming options as we speak but have not found a vendor that can do a good job at a decent price but we have just started this . Also for all of you who want to change the carbs appearance ,the air cleaner adaptor is removable and only serves to allow the air cleaners that are already out there for the 94's and 97's to fit as we didnt want to force anyone to have to use an air cleaner based on our individual tastes. The boss has pics of the 6 Deuce on the dyno with no air cleaner adaptors on it when they were changing air bleeds out while tuning it for the initial calibration and although this is something you will ever need to do ,it does show what it looks like with them off and you can see how you might fab up a different type of air cleaner system for it. Maybe build a single base with a custom top or even two of the mailbox looking scoops for it as the possibilities are endless. He is on his way to Columbus so I will have him send me the pics tomorrow where I can post them. Be sure and go by the display and check them out in person if you are there. Once again all of us here want to thank everyone for all the positive feedback and comments and look forward to you guys posting some pics of them on your cars.
What was the CFM rating of the carbs the 98's were going up against???? The same as the 98's....or smaller????
You're missing my point Shane...... I wanna know which carbs (cfm) they tested against... Were they 97's, 81', 48's, what????? 3-98's= 615 cfm, 3 97's= 450cfm..... If I swap out a 600 cfm for a 750 cfm....I'll probably see an HP increase too.......on a dyno........
Our 98's will flow a little bit better than the other 3 bolt carbs because of our patented air entry and also the fact you dont have the large squirter sitting there in the way like a 97. From what I have seen the generally available better stock 94 and 97 castings flow in the 185-190 range whereas our will go 215. I think the point here though is this was a totally independant dyno test that we were not a part of. Mike and his guys dynoed with the 97's that they have been using for years on their packages and then put our 98's on and made some more pulls. We are not just seeing this at their shop but the feedback coming back from other shops as well where they are pulling 94's and 97's off whether it be 1 ,2 or 3 is the same in that the guys are making better power without having to give anything up. Aside from all this though keep in mind the other benefits in that you can now run conventional fuel pressures and pick up service parts anywhere for the 98'splus you dont have to deal with them constantly leaking like the others. All in all its a win-win situation.No trickery or deception here.
Thanks for verifing......it's very cool for a manufacturer such as BG to come on a public forum an openly discuss it's products....I think more companies should as well.... I'm trying hard to not like these new carbs.....but gotta admit, the advantages over old 97's is tempting.....
Thanks and we appreciate the forum allowing us to do so. Technically we monitor about 400 different forums and try to help wherever needed and offer customer support if a customer has issues. As far as your last statement regarding the advantages ,one of the biggest fears guys had when we talked to them about the old 3 bolt stuff was the constant fuel leaks and fire . I know myself as well as a lot of you guys have a lot of time and money invested in our cars and the last thing any of us need to have is a leaking carburetor catching it on fire . With the design of our carburetors and the modern components used the likelyhood of leaks has diminished and they have a lot longer service life as well as they can be easily rebuilt without all the constant costly repairs. Several customers we spoke with paid more alone for their used cores and the rebuilds on them than the retail price of our new ones.
Those are amazing and for someone to actually try it out and make sure it works before its sold is even better. I dont have a SBC but now i want on just cuz of those.
Haha...yeah....I've had one of mine get some debris in the inlet, overpowering the float and dousing the intake with ALOT of fuel and flooding the engine....it was a bit scary, luckily didn't drip down on plug wires/headers.... A flatblade screwdriver on the side of the road and @ ten minutes, and I was going again... But it's all part of the fun.......right??
Yeah debris can always cause problems but seems the older 3 bolt stuff wants to leak from all the seals and gaskets as well.
As promised here is a pic of the 6 98 set up without the tops as mentioned earlier. I am sure you guys can come up with all kinds of ideas for a cool looking air cleaner set up.
i really don't understand the praise these are getting especially on this board. not trying to sound like a *****, in fact i have used bg 4 barrels on a couple race engines and they work great, but these 98's are just ugly. they don't have the same look as any old style carb and look like they're carved out of a piece of billet, i'm sure they out perform the 48, 81, 94, 97's but they don't look anything like a vintage part. if you don't care how it looks why not just run a single four barrel for half the price because those 98's would stick out like a sore thumb on any vintage style car. i really don't understand the purpose of these other than to try and get the 1-800 know nothing guys to think they have an old looking setup. this whole post makes me miss the old hamb, back when they would have gotten ripped a new one for posting there high tech infomercial, to me these are right up there with the fake olds covers for your sbc or the fake hilborn over a single 4. again the normal bg stuff is great but i really don't get these at all, if you're that worried about the perfomance just get a new corvette and throw a turbo on it, i know it's not traditional but neither are these carbs.
You have to qualify all the surfaces on the older carbs ect................frustration usually wins when most people try working with the older carbs or the people ***ume they do not work due to all the bad wrap they get from people trying to work on them that have no idea what their doing in the end anyways..........people give up too easy..then their are the others that will get anything to work because they really want it and research it...........Littleman..The old carbs are not all gloom and doom...really......theirs always a market for new stuff too.
I agree and disagree. after spending waaaaay too much time trying to fix Vintage Speed ****, and simply make the old stuff work (admit it, it is a real ***** to locate 3 4 or 6 cood cores, and You're gonna buy how ever many parts carbs You can get) I can see a definitive place for these. Do they look "right"? not really...but they are primarily for s.b.c., so technically, You've stepped on Your **** to begin with. However.... We have to take into account the "new guy" theory. The New guy want's to drive so damn bad that any option is a good one. And facing the facts, they still look better than your typical dual quads on a tunnel ram 1970 attack. (note to all involved. I am in fact running dual quads.) and on the bright side, mabey these will free up some decent used carbs for the ********. I have a question for B.G. tech .... CENTER SQUIRTERS. Why-Oh-Why hasn't Barry built a replacement for the venerable 600 Holley Center squirter? Some of us NEED those things, Man! I am sick and damn tired of seeing 2 edelbrocks on a dual quad! C'mon! Let us go fast!
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