With the help and opinions of you guys I decieided to go Q-jet on my 454 elky project. I found this guy on ebay( [email protected] or contact us via phone at 770-235-0775.) After speaking with him he built me a carb for my 454. Now I havent got it yet, but looking at his stuff on ebay, and speaking with him for about an hour by phone I am confident Im getting a good product.At a fair price(175 plus 15 shipping no core charge) . His name is Jim Slaughter and He didnt make me feel as ignorant as I am about carbs. I learned a ton from this guy! He also promised to help with tuning once installed via phone. Of course buyer beware. but talk to him and I think he will be able to help. I will update this post as I get farther along.
Quadrajet info
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Cool! Let us know how it goes. I just started my Quadrajet learning curve as I finally began the tuning process on mine and got the primaries and idle circuit figured out. I will say it idles well and starts on the first turn of the key every time as long as the choke is closed.
http://www.florida4x4.com/tech/quadrajet/index.php
With an in-tank electric fuel pump & a well tuned electric choke 800 cfm quadrajet I feel like I have the ideal poor mans fuel injection. It does not leave much on the table for performance driveability or mileage to fuel injection. But then you don't normally have to replace your fuel injectors every 100 to 150,000 miles or ten years where as you probably will have to rebuild your carb.
Cadillac actually had fuel injection on a limited number of 1975/76 500s. If she has sat for a week I will have to pump it twice so that she will jump to life at the turn of a key. Hot or cold, but hey I can live with that relative to the expense & headaches of converting over to FI & trying to get the driveability etc right.
At 3,840 pounds she went 110mph in the 1/4 and got 17.0 mpg hwy. They are harder & more complicated to get set up right compared to a Holley but once done part throttle driveability, mileage, & staying on tune regardless of weather will leave the fuel slobering Holley at home in your garage or on your race car. From what I understand dialed in equally well it won't leave much power on the table when compared to a Holley either especially on a pump gas big block. I have seen 4 or 5 articles over the years where this has proved out. Well unless you are building a 700+ HP monster then that will probably be different. Good luck.
With an in-tank electric fuel pump & a well tuned electric choke 800 cfm quadrajet I feel like I have the ideal poor mans fuel injection. It does not leave much on the table for performance driveability or mileage to fuel injection. But then you don't normally have to replace your fuel injectors every 100 to 150,000 miles or ten years where as you probably will have to rebuild your carb.
Cadillac actually had fuel injection on a limited number of 1975/76 500s. If she has sat for a week I will have to pump it twice so that she will jump to life at the turn of a key. Hot or cold, but hey I can live with that relative to the expense & headaches of converting over to FI & trying to get the driveability etc right.
At 3,840 pounds she went 110mph in the 1/4 and got 17.0 mpg hwy. They are harder & more complicated to get set up right compared to a Holley but once done part throttle driveability, mileage, & staying on tune regardless of weather will leave the fuel slobering Holley at home in your garage or on your race car. From what I understand dialed in equally well it won't leave much power on the table when compared to a Holley either especially on a pump gas big block. I have seen 4 or 5 articles over the years where this has proved out. Well unless you are building a 700+ HP monster then that will probably be different. Good luck.
Yeah, the way I look at it, if there are people who run 10's with the Q-jet in Super Stock, there is no reason it can't be made to work very well on a street car. The small primaries own for fuel economy as they allow for a lower idle speed due to the stronger vacuum signal that makes the booster venturis able to pull more fuel with less engine speed. I need almost no throttle to get the car moving with the Q-Jet as opposed to the Holley and Edelbrock I have run on the car. My hope is that when it is set up and I have the lock up converter hooked up and operating properly, I can get 18 mpg in the city on my mild 355 powering a loaded Cutlass Supreme ( everything but the Astroroof!) with a big stereo and additional sound deadening.
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