If I recall, I told you 715s are a somewhat better venturi to bore relationship to any other size.
You told me I was wrong. Later you installed them 😂 (50 years of experience and all)
Martin’s goal here is to collect original induction systems. Once I realized who the handle referred to, it made more sense. He is only really into as delivered stuff for display. As such, using 1850s or 3300s or how it runs isn’t the endgame.
I got him a 3x2 setup, now on the hunt for 2x4 gear.
I make mistakes. If I said that, I apologize, you are right about the BC-BD carbs. They just seem better at every point.
This is a forum for sharing information and learning. Making mistakes is part of learning.
You are somewhat of a new comer here. It is rare someone like you will share their knowledge. A person like myself must take that new learned knowledge and go back and review what I've already done, correct my mistakes and often revise my view of it.
I do appreciate you sharing your knowledge, no question, but I need to review how I can apply it. In the past this type of info seemed proprietary with no one willing to share so what I've learned and what I've made mistakes on is on my shoulders but for 50 years has kept me interested and maybe that interest has kept me alive? Who knows? Who cares?
The BC-BD's are new to me. Not something I was exposed to 50 years ago.
I would just add or maybe more correctly reemphasize that it isn't just one component that is being dealt with here, it is an entire package that effects the induction...including the exhaust.
So just installing another carb is rarely a self supporting solution. There are some applications where there will be a conflict. Reading the original salesmen's selling points and accepting that as Gospel from the "catalog" is not a technical solution.
Talking about induction systems and if someone will be happy or not with them is like recommending a camshaft profile that you love, but when the recomendee installs it, absolutely hates it. I don't recommend cams any more. I should have learned from that and applied that to inductions also?
It is just my view and obviously others differ of opinion but to me multiple carburation is for going faster by the means of making more power. Sometimes that seems like attempting to be an alchemist and trying to turn lead into gold.
The Ford "trans-am" intakes may be the best manifolds ever made for the small block Ford, but the intent was for maximum power at racing speeds.
They may in fact have many streetable factors but it is unlikely that there was any consideration of streetability to them in their design.
Another factor that is significant now is that these systems are ancient solutions with old technology. SOME changes in technology available now, not then, change the results you can get from old concept.
In my own defense, I would blame differences of opinion sometimes on the lack of my applicable terminology, not someone else but in many cases I'm still stuck with old terms, descriptions or explanations of why something doesn't work as well as it is expected to.
I appreciate your input and it is influential on my solutions but it is very evident that my criteria varies significantly from others. So with that lack of terminology, I can't always clearly explain.
Also, it is a clear and an ever present issue of the written word not illustrating the tone that is intended. If I seemed to be lecturing, chastising, or the expert, etc., that is not my intent and I apologize to all it concerns but it is probably a very good idea that when you go to shoot skeet with that shotgun that you wear a nice pad on your shoulder? Sometimes the elders have helpful reminders?
Maybe old geezers like me should be quiet and let everyone figure it out for themselves? That might be the solution. Point well taken.
The phrase of "beware of false profits" does bother me occasionally though. Better just to say "brothers and sisters, I feel your pain" or just keep it all to myself and yet some still cry out for help.
No question that any multiple induction system is a great display item but how long can anyone resist "trying" one that they have been playing with on their display shelf? Sometimes a hint on where to start helps on something that is more complicated then it first appears? Sometimes you just have to go for it?