Author Topic: Anybody running dual carbs? (Read 4862 times)

zlat347ci · « **on:** August 18, 2016, 05:41:48 pm »

Hi guys,

So my motor is almost built..... ive really been thinking about running a dual carb setup, is anybody running a 7535 edelbrock intake manifold? Does it fit under the bonnet? (I want it more for how it looks, i realise it probably wont do anything else)

I have a 2" reverse cowl bonnet however not sure if it will fit. A little hard to messure now with no motor.

Cheers

barnett468 · « **Reply #1 on:** August 18, 2016, 05:47:59 pm »

Fitzy has 4 carburetors on his 67.

Do you know who owns that Yellow Boss 302 in your photo . It looks like a high end Concours car I sold to a guy named Robert.

boofhead · « **Reply #2 on:** August 18, 2016, 05:57:41 pm »

I had always though about trying out the RPM dual quad - I expect it to perform well.

In an case, dimensions are

Manifold height: A-4.85", B-5.70"; Carb pad height: 5.28". Port exit dimensions: 1.05" x 1.90".

in comparison the single air gap Edelbrock #7220 is

Manifold Height: A-4.30", B-5.50"; Carb pad height: 4.90". Port exit dimensions: 1.04" x 1.85".

So your looking at only marginal extra height and I have run Air Gaps under a stock bonnet. No problem fitting it I would expect given you have a scoop.

Fitzy1980 · « **Reply #3 on:** August 18, 2016, 06:15:04 pm »

Webers

zlat347ci · « **Reply #4 on:** August 18, 2016, 06:37:10 pm »

I forget the owners name, really nice bloke from country Victoria.

I also did that compareson however my only concern was the positioning of carby number 1 as it will sit right behind the dizzy, much more forward then single carb position so with the bonnet slope the space naturally reduces slightly?

zlat347ci · « **Reply #5 on:** August 18, 2016, 06:49:28 pm »

Engine bay painted and ready

shaunp · « **Reply #6 on:** August 18, 2016, 07:04:28 pm »

I like the look of 3 deuces

and I suspect they would drive better at low speed as they just run on the centre carb.

boofhead · « **Reply #7 on:** August 19, 2016, 06:53:10 am »

Distributor will not be an issue assuming normal size one. I think you will find with a 2 inch scope you would be plenty of space. I have a Vic Senior with an oval intake (same as an option for a dual) and it is out of the bonnet at the from by 1 inch. So I would expect it to be similar and you could use a drop base or modify do it is lower.

sms777 · « **Reply #8 on:** August 19, 2016, 08:25:16 am »

Here you go.....one of my recent builds..

zlat347ci · « **Reply #9 on:** August 19, 2016, 10:58:32 am »

thanks all for your replies.

i decided to order that exact kit...Edelbrock 20354. you just made my day with the pics

how close was the dizzy to the carb? i noticed you have a small cap, i have a big cap MSD, whats your thoughts on clearance?

cheers

shaunp · « **Reply #10 on:** August 19, 2016, 11:03:23 am »

That disy is a Pro billet street or ready to run

sms777 · « **Reply #11 on:** August 19, 2016, 11:24:47 am »

Dizzy is a ready to run Pro Billet MSD. Large cap will not fit this combo.

zlat347ci · « **Reply #12 on:** August 19, 2016, 01:59:40 pm »

MSD Website says
small ready to run/pro billet is 4 3/4 12.065cm
Big cap - 5 3/8 13.65cm

1.5cm overall difference

sms777 · « **Reply #13 on:** August 19, 2016, 04:17:18 pm »

Hey Zlat,
I have done some measurements for you. The closest part of the carby is the left front mounting flange to the small dizzy cap which is 25mm. However the large center vacuum port is only 10mm from the cap. I drew an imaginary circle based on your measurements and the large cap would be only 2mm from the aircleaner flange of the front carby and would most definitaly hit the vacuum ports and idle mixture screws.
Your other alternative to the expensive MSD would be a Professional Products Powerfire ready to run billet dizzy worth half the price of the MSD. It uses the same small cap as the one in my engine.
I hope this helps.
Cheers....

zlat347ci · « **Reply #14 on:** August 19, 2016, 07:39:05 pm »

Thanks for doing that mate really appreciate it.

boofhead · « **Reply #15 on:** August 20, 2016, 10:33:30 am »

Looks very nice indeed.

blackthunder1970 · « **Reply #16 on:** August 20, 2016, 06:14:21 pm »

Quote from: zlat347ci on August 18, 2016, 06:37:10 pm

I forget the owners name, really nice bloke from country Victoria.

i reckon the car is owned by a guy named darrel and his brother
it was a original paint car
i imported around 2004 that car and red 70 boss 302
and they bought both cars off me
sean at bosskraft even came over from sydney to take photos of all the little details

barnett468 · « **Reply #17 on:** August 20, 2016, 06:54:54 pm »

Quote from: blackthunder1970 on August 20, 2016, 06:14:21 pm

i reckon the car is owned by a guy named darrel and his brother
it was a original paint car
i imported around 2004 that car and red 70 boss 302
and they bought both cars off me
sean at bosskraft even came over from sydney to take photos of all the little details

Did the red Boss have new white standard interior and come from California?
.

blackthunder1970 · « **Reply #18 on:** August 20, 2016, 07:55:38 pm »

hi
no the car was a one owner red with black interior from wisconsin
barry

Anybody running dual carbs?

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Author Topic: Anybody running dual carbs? (Read 4862 times)