I just priced a pair of Holley 750 supercharger carbs and the fuel lines and linkage to run side saddle. $1700 !!! : 0

I will not pay that to gain one or two 10ths in the 1/4 mile on a street car.

Carbs have gotten so expensive ..often $500 to $1000 for a serious 4-barrel for racing, but they look like the same old technology from 20 or 30 years ago.

I have seen NA street/strip cars with a 750 edlebrock reach 11's and high 10's, so they cant be giving up so much to a Holley.

Lets suppose we compare a Holley 750cfm vacuum secondary carb to an Edelbrock performer 750cfm. Has any one done a back to back dyno test or a 1/4 mile strip test to compare?

You can't compare a 750 Holley to a 750 Edelbrock. They are flow tested in two different manners. The Holley is wet tested and the edelbrock is dry tested. The Edelbrock would have to be bigger to flow the same amount of air.

For performance, the Edelbrock can perform just as good as a Holley and in some instances better. The biggest problem with them for years was single feed fuel bowls, but they have fixed that issue finally.

Well I disagree that the Edelbrock will hang with a Holley if both are in their best condition and tuned properly, I will take the DP everytime for a race application. For a street rod the Edelbrock is "adequate" and simple to tune.

Mike,
Don't pay $1700 I can point you in the right direction for about $1000 two 750 blower carbs and linkage. I will send you a PM on where to get the good deals. If you weren't so far away I would let you test drive my holleys on your car. We've talked about the carb deal before and you know where I stand on it. Your gas mileage will suffer somebut, I am 100% positive your performance will be better.

Well I disagree that the Edelbrock will hang with a Holley if both are in their best condition and tuned properly, I will take the DP everytime for a race application.


Royce,
I don't think you could convince Mr. Sonny of that. He is running deep 9's with two 800cfm Edelbrock carbs on a '69 Camaro with a 502. The biggest problem with VS carbs is people don't set them up right. Carb size is so controversal that I usually stay away from them. Most people would rather run a 650 dp on there street machine instead of a 750 vs. To properly size a double pumper on the street requires you to choke it down on top end to keep low speed torque. If you don't have opitmal gear and stall to match hp and weight, a dp kills your performance. If ever you pick up just by switching from a vs to a dp, some more than the style of the carb is wrong. THIS IS ALL REFERRING TO STREET DRIVEN COMPROMISES, NOT 5500 STALL/TRANS BRAKED "RACE ONLY" CARS.

Fever,
No doubt VS carbs can work. The part we are leaving is I said "if both are tuned and in their best condition" This would mean on the correct application. A heavy street car, with an auto and a small engine would not be a good choice for a DP. I have been running DP's on the street for a long time and none of my cars are 5500 stall cars. usually around 3000. Once again it depends on the application. In this case I know Mikes (tokyo's) car it is a blown small block with two Edlebrocks, with my blower experience I have had a hard timing getting the Edlebrocks to run correctly on a blower. All the research and people I have talked to agree for "PERFORMNCE" (which was the subject of this post) the Holley style carbs run away from the Edlebrocks.

I too stay away from carb posts because much of it is based on opinion and tuning ability. I think we may just be talking two different situations.

Edit: His car is also not an automatic it's a 5 speed and it's a Camaro so it's not all that heavy. Both of these things make a DP even more inviting.

I just priced a pair of Holley 750 supercharger carbs and the fuel lines and linkage to run side saddle. $1700 !!! : 0

I will not pay that to gain one or two 10ths in the 1/4 mile on a street car.

Carbs have gotten so expensive ..often $500 to $1000 for a serious 4-barrel for racing, but they look like the same old technology from 20 or 30 years ago.

I have seen NA street/strip cars with a 750 edlebrock reach 11's and high 10's, so they cant be giving up so much to a Holley.

Lets suppose we compare a Holley 750cfm vacuum secondary carb to an Edelbrock performer 750cfm. Has any one done a back to back dyno test or a 1/4 mile strip test to compare?I prefer the Holley/Demon carb.To me it is easier to work on.

Fever,
No doubt VS carbs can work. The part we are leaving is I said "if both are tuned and in their best condition" This would mean on the correct application. A heavy street car, with an auto and a small engine would not be a good choice for a DP. I have been running DP's on the street for a long time and none of my cars are 5500 stall cars. usually around 3000. Once again it depends on the application. In this case I know Mikes (tokyo's) car it is a blown small block with two Edlebrocks, with my blower experience I have had a hard timing getting the Edlebrocks to run correctly on a blower. All the research and people I have talked to agree for "PERFORMNCE" (which was the subject of this post) the Holley style carbs run away from the Edlebrocks.

I too stay away from carb posts because much of it is based on opinion and tuning ability. I think we may just be talking two different situations.

Edit: His car is also not an automatic it's a 5 speed and it's a Camaro so it's not all that heavy. Both of these things make a DP even more inviting.

Can't argue with that. The DP's do fit well with the app. he's got. Sorry Royce for doubting the first go round.

Everything is application specific.........you cant generalize from manufacturer to manufacturer other than will the carb give you the features you require. Ease of tunability. Idle quality, drivability , transition to power circuit , fuel curve etc. etc. If you are talking about the Edelbrock AFB based carbs they were used in dual 4 barrel applications, obviously the Quads were not.

Fever,
No sweat I don't get my feelings hurt or offended easily. There is room for everyone here, I was only stating my opinion and experiences. That doesn't make me right or wrong. It proved two things, I had a bunch of typos and I can't spell Edelbrock, LOL.