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Old 06-17-2012, 11:19 PM   #1
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Best carb for SBC 350?

Hey guys I just got done putting in a SBC 350 into my YJ. I was wondering what a Good out of the Box carb is? I don't know how to tune a Carb But can learn. I have a i think.. Qjet on my engine now And I'm pretty sure it's missing parts. The throttle cable hooks into linkage on the driver side And thats all there is for linkage. I see conections on the passenger side of the Carb but nothing is hooked up and I dont have linkage, The engine will still start up nd drive But it seams to like.. load up If i hit the gas hard. It will bog down. I'm not sure What it means.. (I am a Idiot when it comes to carb) But A guy from a shop that helped me wire the engine says only the primary is hooked up. He said the 4 barrel doesnt have the linkage. So what I'm wondering is.. Should I just use the Qjet? Or holley truck advenger? I am not sure.. It stalls out when I go up a incline.. But Im not sure If it's not tuned properly? Or just cuz it's a junk carb? I am not concerned about milage. Just want a carb that can handel some angles. Also.. If I should keep the Qjet.. Were can I get some linkage? Online somewhere? Can some one give me a pic of what it is suppose to look like?

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Old 06-17-2012, 11:23 PM   #2
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Avenger Carb

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Old 06-17-2012, 11:28 PM   #3
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Holley? I red on another website that there hard to keep tuned? What (size?) should I get? My engine is pretty tame but will upgrade in the future. I want to leave room for inprovment
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Old 06-17-2012, 11:41 PM   #4
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Holley's aren't any more difficult to tune, or keep in tune than any other carb available. In fact, it's easier than most. All the documentation you would need to tune it is on Holley's website to download.

Truck avenger as mentioned, with an electric choke for ease of use.
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Old 06-17-2012, 11:47 PM   #5
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So.. any recommendations on what CFM? I want to order a carb tonight So I can get it in mid week to Put in and start butchering the tuning Like I said.. I have a old Chevy 350.. Pretty much stock. But I got this engine for cheep and i know it is going to die in a year or two. So eventually I will put in a crate engine. but thats way way in the future
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Old 06-17-2012, 11:58 PM   #6
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600-650 will be more than enough. U figure your displacement, Max rpm and volumetric efficiency of your motor. For example, a 350 with 6000 rpm Max at 100% vol eff calls for 580cfm. You will never see 100% unless you go forced induction. So 600 would give u plenty with OK MPG
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Old 06-18-2012, 12:02 AM   #7
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Does it mess it up to over Carb a engine? Because my compression is good.. but not perfect
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Old 06-18-2012, 07:48 AM   #8
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If you are way over carbed yes. Worst case idly wont run right cause it'll be too rich.
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Old 06-18-2012, 08:49 AM   #9
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Ok so I guess I'll order a 650CFM truck advenger today.. Scense my Qjet is junk.
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Old 06-20-2012, 05:17 PM   #10
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Quote:
Originally Posted by yjJEEPyj View Post
Hey guys I just got done putting in a SBC 350 into my YJ. I was wondering what a Good out of the Box carb is? I don't know how to tune a Carb But can learn. I have a i think.. Qjet on my engine now And I'm pretty sure it's missing parts. The throttle cable hooks into linkage on the driver side And thats all there is for linkage. I see conections on the passenger side of the Carb but nothing is hooked up and I dont have linkage, The engine will still start up nd drive But it seams to like.. load up If i hit the gas hard. It will bog down. I'm not sure What it means.. (I am a Idiot when it comes to carb) But A guy from a shop that helped me wire the engine says only the primary is hooked up. He said the 4 barrel doesnt have the linkage. So what I'm wondering is.. Should I just use the Qjet? Or holley truck advenger? I am not sure.. It stalls out when I go up a incline.. But Im not sure If it's not tuned properly? Or just cuz it's a junk carb? I am not concerned about milage. Just want a carb that can handel some angles. Also.. If I should keep the Qjet.. Were can I get some linkage? Online somewhere? Can some one give me a pic of what it is suppose to look like?
I believe quadrajet secondaries are all vacuum operated. My sbc came original with a 750.
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Old 06-20-2012, 05:28 PM   #11
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Quadrajet secondaries are all vacuum. There is no linkage to hook them up.

As far as Holley carburetors are concerned... they have been the best carburetor for most applications for almost 40 years. They are super dependable and easy to adjust. (For example: most of the OEM carburetors have to have the carburetor broken down to adjust the float. Holley's carbs have most of their adjustments outside the carburetors so you only have to "break it open" when you intend to rebuild them.) These carburetors perform and you will notice a very smooth running engine. If you have any problems with your "application" go to their website. They "walk you through" choosing the right carb for your application... all you have to do is answer some simple questions honestly. Then, they give you their recommendations.

The truck avenger is a great carburetor for off road use... I read a man's article on another forum who races off road with it since it first came out. He has never had a problem with any incline whatsoever. He swears by it. I can tell you first hand that Holley's service is fantastic and their availability of parts is second to none.

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Old 06-20-2012, 10:56 PM   #12
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I am working on installing in now.. Been having some troubles with adaptor plates to make it fit onto my intake manifold..

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