Thoughts on a Four 2bbl intake Manifold

[custom10nut]

I have the opportunity to but an Offenhauser 4-2bbl manifold, complete with the fuel lines and linkage.
This thing pegs out the Cool Meter
For a long time now, I’ve been toying with the idea of building an engine and using a multi carb setup.
My concern is the total CFMs of all the carbs, and how much engine I would have to build to be able to handle them.
.
Any thoughts from the Old Timers?
Old School Rules!

[kwmech]

You'll have "the cool'' factor going for you, that's about it. Old tech. I think a single 4bbl would be easier to maintain and adjust

[Lee H]

I say go for it. That would be so cool at the car shows. I would try it. That being said most folks can’t tune a single carb correctly, let alone 2, 3,........ What’s the worst that can happen? You revert back to a single carb set up. Good luck, and post pics if you go for it. Lee.

[Steeveedee]

Originally Posted by custom10nut

I have the opportunity to but an Offenhauser 4-2bbl manifold, complete with the fuel lines and linkage.
This thing pegs out the Cool Meter
For a long time now, I’ve been toying with the idea of building an engine and using a multi carb setup.
My concern is the total CFMs of all the carbs, and how much engine I would have to build to be able to handle them.
.
Any thoughts from the Old Timers?
Old School Rules!

Cool, if you want cool, because it's zit point **** for performance. I'd rather see a manifold with 6 Stromberg 97s, which were still zit point **** for performance. As for what engine could handle them, you could go look at the Chevy 6-cylinder forums. Good luck with your project. Not meant to be offensive, believe it or not.

[truckster]

If what you're looking for is something unique for showing, I think it would be really cool. If you're thinking about performance, it's going to disappoint you. Aside from that, it's going to be a chore to keep those four carbs tuned and synchronized.

[dmjlambert]

It sounds outrageous. I like it. I wonder if you could put adapters on it and hook up 4 Quadrajets. It would be fun to custom cut and weld together 4 stock style air cleaner housings to make one massive air cleaner housing with a row of snorkels. That would be style.

[Grumpy old man]

Do it .

https://www.youtube.com/watch?v=H-DwOwpk_Nk

[special-K]

A four 2bbl set-up is appropriate for a small block, not a 6 cyl. 2-stage carbs would be cool and perform the best. Those multi-carb set-ups were all about WOT, just like a Torquer intake (straight runner/high-rise). It's style over performance with today's 4bbls available. If that's what you want then go for it. I think of the multi-carb set-ups, other that dual quad, as a '50s-early '60s thing on hot-rods with exposed engine. In one of these trucks it would be something you had to tell people or let them see with raised hood at a show. Dual quad would be period correct and was what I wanted on the 327 in my '67 project that is a period hot truck build. But I backed down once I considered while that is the look I want, the use I want from it is getting out of town... making long trips/touring around. Simple is good and so is using less fuel, so it's a single Quadrajet for that truck

[un4gvn!]

Adding all the cfm's together isn't your total cfm. There is a formula to use. Example; if you use two 1000 cfm dominators, the total cfm you would think will be 2000 cfm. That would be a lot of cfm. I can't remember what to divide the total cfm by.

[custom10nut]

The best aspect of this forum is the seemingly endless wealth of knowledge and experience.
I wholeheartedly agree with all of the input and advice.
For a long time, I’ve been dreaming of building an Old School Hot Rod engine, and then find something to put it in.
If I had a 28-34 Ford Five Window coupe, this would be a slam dunk.Just for the cool factor at shows.
I think the best app would be a Road racer or Dirt track car, and not a Drag Car.
The ultimate goal would be to have this car on an Old School trailer, with my 70 as the Tow vehicle.
Still can’t get my head out of the 70’s

[MARKDTN]

If you want to show it off and have a cool factor, go for it. If you want to drive it a lot and enjoy it, a single 4BBL will be much better. If you want to drive it and not worry about anything and get better mileage and way less fuel in the oil, fuel injection conversion.

[AU Doc]

First of all, I don't have a clue what I'm talking about. Fortunately, that never stops me from talking

I've wanted to do something similar for a while. I think it would be a much happier install with DBW throttle bodies. That would eliminate the hassle of fiddling with linkages, and it would let you tune each throttle body independently. There are controllers that do a fantastic job of tuning themselves these days. I know there is a cougar running a tunnel ram with dual TBs doing this. It's a street car with a small cube V8. It obviously gives up performance to run that intake, but it sure is cool. Particularly when you consider it has great street manners as well.

There are a lot of ways to slice this problem. At the end of the day, if you like it, go for it!

[Grumpy old man]

Originally Posted by custom10nut

I have the opportunity to but an Offenhauser 4-2bbl manifold, complete with the fuel lines and linkage.
This thing pegs out the Cool Meter
For a long time now, I’ve been toying with the idea of building an engine and using a multi carb setup.
My concern is the total CFMs of all the carbs, and how much engine I would have to build to be able to handle them.
.
Any thoughts from the Old Timers?
Old School Rules!

How much do they want for it ? I see lot's of responses of why not to do it , But not everyone is drinking the LS koolaid . Small block build parts are basically "cheap" every project starts somewhere . If you buy it I'll give you a new engine stand to help get your project going .I have a few extras in the way . I'm not saying you have to drop it in your truck but while your building the engine you can decide what to drop it in .

This one runs fine and who cares about MPG ? It's about Smiles per gallon ! and I have a good Muncie connection , Great now you've got me thinking about another project !

https://www.youtube.com/watch?v=FtVfuWy3-Ts

[Steeveedee]

Originally Posted by Grumpy old man

Do it .

https://www.youtube.com/watch?v=H-DwOwpk_Nk

That setup says, "Feed me, Seymour!".

[Grumpy old man]

Originally Posted by Steeveedee

That setup says, "Feed me, Seymour!".

He lives about 1/2 hr away from Pigeon forge / Gatlinburg Tn , Arguably one of the biggest cruise in / car show destinations . Whats a little gas when you could have a bunch of fun ?

[Ironhorse]

Have never seen or heard of a Offy 4-2BBL intake but have to admit the WOW factor at a car/truck show would peg the meter at top end. Just do not see very many multi-carb set ups anymore at shows. LS and EFI fever has taken over so many engine builds, even a single carb is less and less prominent. Getting a multi-carb set up be it on a BB or a SB engine can be a bit problematic to dial in but really, how often have you seen them at your local car show? Sometimes it's nice to step out of the box and venture forth. I'm running a SBC 283 with dual fours in my 57 Chevy 2 dr sedan and get a LOT of comments about it both in person and on a couple Tri-five boards I am on. Totally old school but then being almost 72 years young so am I, LOL.

Some what local to me board member Elliot949 has a really sweet 67 short bed , 327 with a Tri-power set up under the hood. When was the last time you EVER seen a 67-72 pickup with a Tri-power?

Agree with Grumpy, "Smiles per Gallon" sometimes means more to me than miles per gallon.

[Grumpy old man]

Well this might be a hole lotta fun at a car show . :lol

https://www.summitracing.com/parts/ofy-3924

[truckster]

Originally Posted by Grumpy old man

Well this might be a hole lotta fun at a car show . :lol

https://www.summitracing.com/parts/ofy-3924

I think you'd have to fill the tank twice... once just to fill the fuel bowls.

But I agree with you. The classic small block with a carb (or carbs) is still a great setup. I put an L31 in my Blazer, but chose to go with HEI and a Quadrajet.

Where Custom10nut said he plans to use it for a show car, I can't see any reason not to do it.

[tommy3horse]

Wow Grumpy, thats awesome! The fuel plumbing would need to be like artwork, love to see it hooked up and running on something...

[72c20customcamper]

Not to hard to set up multible carbs. Hardest part is syncing them but it's just like doing a motorcycle. Also my AMX has dual Carter competition 625 cm 4bbls. Took a while to get the jets dialed in but it runs well. And yes peoples eyes light up seeing multi carb setups

[j_cst_10]

People with old Japanese motorcycles deal with it all the time. My KZ1000 - 1L 4 cylinder with 4 CV carbs.

Obviously a little different set up but it can be done! pain in the butt...yes

[custom10nut]

Originally Posted by Grumpy old man

Well this might be a hole lotta fun at a car show . :lol

https://www.summitracing.com/parts/ofy-3924

See now, that setup just pegs out the Cool Meter, as would the 4x2 that I found.
Then you get the practicality side of the discussion.
I’ve gotten a little more practical in my older age I guess.
BTW, as a kid in the early 80s, I had a 10 second, 2-4bbl 427/4spd powered Nova that I drove around from April to November (In Michigan). I worked on the Family Dairy farm so most of my driving was by choice and Not necessity.
Like I said, part of me can’t seem to let that go.
Grump, the guy want $750 for it, with all the linkages and fuel lines, but the carbs need to be rebuilt.

[truckster]

Originally Posted by custom10nut

See now, that setup just pegs out the Cool Meter, as would the 4x2 that I found.
Then you get the practicality side of the discussion.
I’ve gotten a little more practical in my older age I guess.
BTW, as a kid in the early 80s, I had a 10 second, 2-4bbl 427/4spd powered Nova that I drove around from April to November (In Michigan). I worked on the Family Dairy farm so most of my driving was by choice and Not necessity.
Like I said, part of me can’t seem to let that go.
Grump, the guy want $750 for it, with all the linkages and fuel lines, but the carbs need to be rebuilt.

What carbs are on it?

[custom10nut]

Originally Posted by Ironhorse

Have never seen or heard of a Offy 4-2BBL intake but have to admit the WOW factor at a car/truck show would peg the meter at top end. Just do not see very many multi-carb set ups anymore at shows. LS and EFI fever has taken over so many engine builds, even a single carb is less and less prominent. Getting a multi-carb set up be it on a BB or a SB engine can be a bit problematic to dial in but really, how often have you seen them at your local car show? Sometimes it's nice to step out of the box and venture forth. I'm running a SBC 283 with dual fours in my 57 Chevy 2 dr sedan and get a LOT of comments about it both in person and on a couple Tri-five boards I am on. Totally old school but then being almost 72 years young so am I, LOL.

Some what local to me board member Elliot949 has a really sweet 67 short bed , 327 with a Tri-power set up under the hood. When was the last time you EVER seen a 67-72 pickup with a Tri-power?

Agree with Grumpy, "Smiles per Gallon" sometimes means more to me than miles per gallon.

In the Movie “American Graffiti”, John Milner’s Yellow ‘32 Deuce Coupe had a 4-2bbl set up on a 327. I know movies are movies, so as far as being super fast, I guess it was written into the script.

[custom10nut]

Originally Posted by truckster

What carbs are on it?

Four Rochester 2Gs