Need carb and intake advice

[garner7555]

I am looking for a carb and intake for my charger. I'm open to suggestions about carb and intake both.  I really would like a demon, I have wanted to try one for years.  I was thinking 750 cfm or maybe 850 cfm at the most? I was also thinking mighty demon or speed demon?  My car is gonna be a street car that gets driven like it was stolen regularly (doughnuts, burnouts, hard acceleration, very rarely taken to track).  Any input is appreciated.


I have a 69 charger, 440 4speed. Engine is .030 over with forged pistons close to the 6 pack / HP pistons. Mine have slightly more compression. Stock 906 heads with slight polishing. My cam is mopar performance  .484 lift 284 duration.   part #  P4120235AE    
http://m.summitracing.com/parts/dcc-4120235ae
long tube headers

[pontiac charger]

Lots of places to start with this one.  What RPM range do you want to run?  What transmission?  Do you want vacuum or mechanical secondary's?  I would start by using the link below to the Holley website and there carb selector application.  It gets you pretty close to what you will need.

As far as an intake, it depends on the RPM range of the car, I have used the Mopar Performance M1 and had great success with it but edlebrock makes some good intakes as well.  Depending upon the style of carb you run, you might consider a heat crossover blockoff to help keep the carb cooler when you are running.


http://www.holley.com/applications/CarburetorSelector/CarbSelection.asp

[c00nhunterjoe]

With your combo I reccomend the edlebrock performer rpm intake and a holley 4779 750 cfm carb. Out of the box the jets will be very close for your build but the accelerator pump will be too light so order the pump cam kit.

[garner7555]

It looks like I may go with the RPM intake. Also looking at the Quick Fuel Q series 750 mechanical carburetor. Looks like a well made piece. Anyone running a Quick Fuel carb?

[c00nhunterjoe]

I have the q750 on the 440 in my belvedere. Its an overpriced holley that's shiny..... but i like the old school stuff anyway. Spend the exta money on upgrading a holley

[garner7555]

I like Holley, always have, but I would like to try something different. I don't care for edelbrocks much. I was thinking demon but I like some of the features of the Quick Fuel. Seemed to me like it was cheaper than a "comparable" Holley. 

Anyone had problems with them?

[ACUDANUT]

I have the q750 on the 440 in my belvedere. Its an overpriced holley that's shiny..... but i like the old school stuff anyway. Spend the exta money on upgrading a holley

I agree.

[firefighter3931]

I have a QF-1050 on my 572 pump gas motor....awesome carb with lots of adjustability & features that a std Holley double pumper does not have. The comparable Holley carb would be an "Ultra" race carb. I luv the adjustable idle/high speed air bleeds and the clear site glass for checking the float level.   

The Q-series 750 double pumper with an RPM intake manifold would be an excellent choice for the OP's engine combination, inmo. 


Ron

[garner7555]

Thanks Ron. That's what I was hoping to hear.
Must not be too many people running Quick Fuel?

[firefighter3931]

Thanks Ron. That's what I was hoping to hear.
Must not be too many people running Quick Fuel?

I've recommended the Proform carbs to many here which is basicly identical to a quickfuel but they are a little better priced. 

The Proform carb uses Quickfuel baseplates/metering blocks with their own main body. The Quickfuel carb uses a proform main body with quickfuel baseplates/metering blocks....so basicly the carburators are identical other than the color of the billet baseplates/metering blocks. The proform carbs have Purple baseplates/metering blocks while the Quickfuel has Red baseplate/metering blocks.

From a performance standpoint they are virtually identical. The QF 750 actually flows right at 830 cfm so it's a little bigger than advertised. Nice radiused venturies and no choke horn to impede flow. It is a very nice carb. I had one on my old 446 that made 535hp/540tq so it moves plenty of air/fuel. 

Should you decide to step up the build at a later date with better heads and a bigger cam you'll be fine with that carb 


Ron

[garner7555]

I have heard that Proform and Quick Fuel are the same. I heard QF is strictly USA made while Proform imports some of their parts.     I don't know this for a fact but that's what I was told.

That's great to hear about the airflow, I may upgrade to aluminum heads in the future so it will be great to be able to reuse it.  Thanks for the info!

Wouldn't it take more money to modify a Holley to be comparable with this carb? 

[oldschool]

My car is gonna be a street car that gets driven like it was stolen regularly (doughnuts, burnouts, hard acceleration, very rarely taken to track).  

where are you going to be driving like that, on the street?

[garner7555]

My car is gonna be a street car that gets driven like it was stolen regularly (doughnuts, burnouts, hard acceleration, very rarely taken to track).  

where are you going to be driving like that, on the street?

Yes Sir!     I'm a farmer, which means I live in very rural America. It definitely has its perks!    We have hardly any other traffic and plenty of back roads. 
Also there are no restrictions about shops, parts cars, parts of cars or anything else lying around.   I know what your thinking...  You wish you was my neighbor.  Haha. 

[oldschool]

My car is gonna be a street car that gets driven like it was stolen regularly (doughnuts, burnouts, hard acceleration, very rarely taken to track).  

where are you going to be driving like that, on the street?

Yes Sir!     I'm a farmer, which means I live in very rural America. It definitely has its perks!   We have hardly any other traffic and plenty of back roads.  
Also there are no restrictions about shops, parts cars, parts of cars or anything else lying around.   I know what your thinking...  You wish you was my neighbor.  Haha.  

i sure do  ..sometimes living in the city just sucks

[justcruisin]

I run a quick fuel 830SS on my 440, it is possibly a little big, I have a wide band o2 and I have been able to tune the carb so the engine runs great, it was quite rich out of the box, great adjustability and I am by no means a pro with carbs. While it performs well the smaller venturi of the 750 might be better. The SS series run a choke but in my case it is not really needed and I have it set up so it is open in around 15 seconds, the fast idle is a plus for warm up though, once things are set up properly. One pump when dead cold, crank it up and it takes care of it's self, that's it.
I also run the RPM manifold.

[garner7555]

Good to hear.  That reinforces the fact that I probably should run the 750.  I think I will go with the Q series because I don't think I will need a choke living down here in the south.  Glad you like it and thanks for the info justcruisin   

[justcruisin]

No problem, the best thing I did was fit the wide band 02, my advice to you is fit one, I use an innovate gauge and in my opinion it is priceless.

[garner7555]

I thought that looked like a good setup to have,  may have to get one to aid in tuning.