Barry Grant inline carb for chevys

[Z-Dreamer]

Don't know if this has already been posted or not, but I found it very interesting!

 

http://www.popularhotrodding.com/tech/0703phr_four_barrel_inline_carb/index.html

 

Mark

[LeeMS]

Ford/autolite had a simular inline four venturi carburetor in the 1960s. Aways thought it too looked great. The grant unit has a bit better enginering.Lee

[Forces]

Looks cool, sounds like a good idea in theory. I wouldn't consider putting that on my car without seeing some dyno comparisons to standard Demons, Holleys, Edlebrocks and Rochesters.

[Pete84]

http://www.popularhotrodding.com/tech/0703phr_four_barrel_inline_carb/photo_17.html

 

"Here's the small-block Bad Man as seen from the passenger side. By now, you're wondering how much it's going to cost. Look for a street price of around $1,795 (bare- cast appearance) for the small-block unit, which includes the inline four-barrel Bad Man and the Aero-ram manifold seen here. That's a lot of dough, but not when compared to the cost of converting to electronic fuel injection. Compared to EFI, the Bad man avoids the hassle of laptop tuning, wiring, and fuel system conversion, while offering equal (or better) drivability and power."

[Pete84]

To my _very_ inexperienced eye, it looks like that manifold is designed for peak hp / high rpm, as the runners are very short . . . which limit the low end torque, right?

http://www.popularhotrodding.com/tech/0703phr_four_barrel_inline_carb/photo_14.html

http://www.popularhotrodding.com/tech/0703phr_four_barrel_inline_carb/photo_13.html

Correction please? Am I looking at it correctly?

[Pop N Wood]

To my _very_ inexperienced eye, it looks like that manifold is designed for peak hp / high rpm, as the runners are very short . . . which limit the low end torque, right?

http://www.popularhotrodding.com/tech/0703phr_four_barrel_inline_carb/photo_14.html

http://www.popularhotrodding.com/tech/0703phr_four_barrel_inline_carb/photo_13.html

Correction please? Am I looking at it correctly?

 

I was wondering about the manifold too. There are some benefits to having the large open plenum of a 4 barrel. That system looks way cool, but it will be almost like having individual carbs. Can't believe the linkage is progressive.

[grumpyvette]

this is going NO PLACE for the same exact reason the orriginal ford inline carbs and webber 4x2 intakes were never very popular...NOT because they failed to work well, but due to total costs envolved and a lack of a wide range of matching intake manifolds at competative prices, you can get an intake, DUAL QUADS and linkage and air filters in a matched component set up for well UNDER 1/2 the total costs

 

http://store.summitracing.com/partdetail.asp?part=SUM%2DCWND303&autoview=sku

 

 

http://store.summitracing.com/partdetail.asp?part=EDL%2D20254&autoview=sku

 

 

if your willing to pay big bucks...

 

http://www.carburetion.com/Weber/wildv8.asp

 

http://www.hilborninjection.com/product.asp?Id=52&CatId=37

[Pete84]

grumpy, besides the cost, does it look like a solid design? What of torque and the almost-not-there runners?

[grumpyvette]

theres no reason a properly designed intake and carb combo with those carbs can,t work correctly but I see little to no advantage over either webers or a properly set up dual quad setup, yes short runners tend to raise the rpm band , but its not something that can,t be worked around to some extent, it seems to be a really expensive duplicate answer to a question that was answered long ago for less money

 

http://www.rbracing-rsr.com/runnertorquecalc.html

 

http://www.bgsoflex.com/intakeln.html

 

http://victorylibrary.com/mopar/intake-tech-c.htm

 

if you want to see what short runners and direct carb to plenum/runner intakes do to low rpm responce get an offy 360 intake, if you want to see what direct intake to venturie intakes can do, get the weber set up, BTW the webers are FAR MORE EFFECTIVE in the low and mid range

 

 

IF LOOKS WERE THE MAIN OBJECT, because it LOOKS more impressive PLUS it produces better POWER

 

[Z-Dreamer]

Wow, i didn't know this would spark so much discussion!

 

I agree that it is over priced!

 

First, I would be willing to pay up to 1K, IF it did as advertised.

 

Secondly, as to whether the runners are "too short", if you look at page two, you will see a pic showing the lower half of the intake with the intake runners hi-lighted in glowing red.

 

The runners appear to start at one side and then "run" to the other side, sort of like a cross ram intake.

 

Finally, BG says this combo will be available for SBC, BBC and LSX engines, allowing folks another alternative.

 

Mark

[Pete84]

I'm not to terribly familiar with carbs, but he talks of how the fuel bowls don't need to be drained to changed the jets, and how easy it is to change the jets with no gasket damage possible.

 

Is that very big of a deal?

[grumpyvette]

"Is that very big of a deal?"

 

more of a NICE feature than a big deal, as its just not that difficult on any comon carb like a DEMON,HOLLEY or EDELBROCK, once your familiar with those carbs and the HOLLEY and DEMON carbs haveheavy duty synthetic gaskets available and your only talking about spilling about a cup total from both bowls combined.

 

BUY TWO of these and REMEMBER to replace the jets you use

 

http://store.summitracing.com/partdetail.asp?autofilter=1&part=HLY%2D36%2D181&N=700+115&autoview=sku

 

or buy these

 

http://store.summitracing.com/partdetail.asp?autofilter=1&part=PHP%2D15001&N=700+115&autoview=sku

 

http://store.summitracing.com/partdetail.asp?autofilter=1&part=HLY%2D34%2D25&N=700+115&autoview=sku

[Tech @ BG]

Thanks for the interest in our new Inline carburetors.

We’ll see if we can answer some of the questions, and comments brought up here:

 

Let’s first start off with a standard 4bl carburetor: The 4bl carburetor was designed out of packaging convenience not performance in mind. The first engines had a single (1 barrel) carburetor. As they required more air engine builders added more one barrel carburetors, then for packaging purposes the idea came about to mount all four barrels together. This makes your fuel lines, linkage, etc all much easier, however it leaves you with a problem within the intake manifold. You wind up with 4 longer runners, and 4 shorter runners. This is not real good for distribution. The idea behind putting all 4 barrels inline is first and foremost that we’re able to equalize the length of the runners. This allows use to use the longest runner possible within the shortest height. Our runners go across the intake like an old cross-ram.

Since we’ll be using our RS (Replaceable Sleeve) system we’ll be able to offer different sizes to fit most applications from about 500 CFM up to about 1400 CFM. We will also be offering different style boosters to for different applications.

The thing that killed the inline Autolite® was the fact that Trans-Am banned them in 1971, and then NASCAR, and NHRA followed suit. Trans-Am told Ford that they needed to make the carburetors available to other manufactures or they would be banned. Ford opted to drop its Trans-Am program. Without racing they had no reason to do more R&D on these setups and they died out. There were not the other aftermarket manufactures as there are today to run with the idea.

If you look at the Offy intake that grumpyvette has pictured you can see exactly what we’re talking about. That intake was offered with multiple tops, a single 4bl are one of the other versions to the 2x4 top he shows in his picture. If you were to measure from the runners to the barrels of the carburetors they are different lengths. There is no way to pull the same amount of air through them, so you’re not able to produce the same AFR from cylinder to cylinder and cannot produce the same amount of HP out of each cylinder.

Here's a link to video from the SEMA show:

[Ledphoot]

I've been wondering if those Percy adjustable blocks were any good... Thanks Grumpy..as usual, I agree with you..

[Tech @ BG]

I've been wondering if those Percy adjustable blocks were any good... Thanks Grumpy..as usual, I agree with you..

 

 

The one problem with those blocks is that they use a Needle design to change fuel flow. They can cause an engine to go overly lean at WOT.

[fastzcars]

You know I was VERY interested in this setup, but changed my mind when I couldn't find any info of it's actaul physical hight ( w/aircleaner ). Our Z's have very limited hood space, and I didn't want to cut a hole in my hood.

[Tech @ BG]

You know I was VERY interested in this setup, but changed my mind when I couldn't find any info of it's actaul physical hight ( w/aircleaner ). Our Z's have very limited hood space, and I didn't want to cut a hole in my hood.

 

 

Don't have specific dimensions yet with air cleaners, as we're working on them as week speak. Once we get closer on them we'll be able to give you the exact dimensions for the different combinations for both the front and rear from the top of the block to the top of the air cleaner.