edelbrock vs. holley carb - Hot Rod Forum : Hotrodders Bulletin Board
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Old 12-29-2003, 03:21 AM
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edelbrock vs. holley carb

what do you think would be the best carb for my 305 in the 600 to 700cfm range. best meaning out of the box performance with little tuning. i am using an edelbrock in take so should i keep everything edelbrock? if not equipped with and electric choke i would probly get the conversion kit.

these are the 2 i am am interested in:

-Edelbrock 600CFM, vac secondaries, electric choke #1406

-Holley 670CFM street avenger, vac secondaries, electric choke# 0-80670


these are others i have looked in to:

-Holley 600CFM double pumper, mech secondaries # 0-4776C

-Holley 650CFM vac secondaries, electric choke # 0-80783C

-Holley 650CFM double pumper, mech secondaries # 0-4777C

-Holley 700CFM double pumper, mech secondaries # 0-4778C



any others that you would suggest that would give me the best bang for my buck?

thanks

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Last edited by Super Chevy; 12-29-2003 at 04:14 AM.
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Old 12-29-2003, 03:30 AM
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Personally, I like Edelbrocks, but that is mainly because that is all I have ever owned. They work well for me. Everyone will have their opinion, bit I think it comes down to personal preference. Just my .02.
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Old 12-29-2003, 08:02 AM
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i saw that you said that you were looking at double pumpers, i dont think you need even look there. lil bit to big for the 305. my buddy has a built 400 sb and he has a 750 double pumper and it is to much for it, and this motor is pretty stout.
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Old 12-29-2003, 08:11 AM
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I used Holley 570 Street Avengers on 2 305s I built. worked great.
the last one ran 13.70s in my 3.08 geared 86 ElCamino
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Old 12-29-2003, 08:18 AM
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Stick with a vacuum secondary carb for the street. The Edelbrock should work well for your engine.
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Old 12-29-2003, 08:30 AM
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I have used both and like both. Main thing you need to do is LEARN about the carb you get. Don't do the usual 'shot int he dark' modification then complain about how crappy the carb is. Buy some books, there are several good ones on both carbs, and make rational tuning steps.

Once the carb is set properly, either one will serve you for many years, problem free. I lean toward Holley just because I think they look better and, for me, they are a little easier to set up with their modular construction.

Don't succumb to bigger is better thinking. Stick with a 600cfm max and you will be much happier. Don't even consider anything but a vacuum secondary model.
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Old 12-29-2003, 09:12 AM
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Stick with vacuum secondaries. The engine will take only what it needs. With a 305, I'd go no bigger then 600 CFM. I've owned Hollies and Edelbrocks. Currently I have a Edelbrock 600 on my 66 Mustang. Boy, what a smooth carb! I highly recomend them. Also a Carter is basically the same. Don't rule out a Quadrajet either. They're excellent carbs too.

My $.02, I'd go with the 500 CFM Edelbrock. BTW, I'm not knocking Hollies, just pointing out the fact that there are other great and capable carbs out there!
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Old 12-29-2003, 12:41 PM
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I agree with Wilys, learn about the carb you choose to use. I prefer Holley, but that is just because I have a world of experience with them. I have no experience with the Edelebrock carbs, but through the years I have had quite a few Carter AFB's and I like them also. The Holley looks so much better sitting on top though

Vince
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Old 12-29-2003, 04:15 PM
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that for all you input guys. i have started to learn about the general principals of carbs. its a hard decision. but its narrowed down to the 600cfm elelbrock or the 570cfm holley. since my 305 isn't going to be in my car forever, eventually i plan on doing my 350 or 283, can i detune a 670cfm carb so it will work on my 305 and then change it back for the 350 or 283 so i wont need to buy another carb in the future?
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Old 12-30-2003, 11:18 PM
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is it possible?
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Old 12-30-2003, 11:37 PM
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You can use the holley 650 vacum secondary spreadbore q-jet replacement carb HLY-0-80555C,it will work fine on the 305 and better on a 350
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Old 12-31-2003, 12:10 AM
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thanks, but ill just go with the edelbrock 600cfm.

thanks for the help everyone
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Old 12-31-2003, 11:44 AM
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stepside454, what kind of combo you have in the 305?
as far as Holley v/s Edelbrock, I like Edelbrocks for a daily driver, cause you bolt them down, adjust them & go. The Holley's are better suited for racing, mainly because if a cloud floats over you have to re-tune them. All I ever have was very touchy to the weather, all but the one I have now. if you get a Holley, buy a brand new one or a factory rebuilt (by Holley) carb. I've seen a lot of people have trouble out of rebuilt Holleys (mainly due to age & wear). If the Edelbrock works good, I would leave it alone.
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Old 12-31-2003, 03:04 PM
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I would take Edelbrock any day of the week, they run great right out of the box.
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Old 12-31-2003, 04:44 PM
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I`m sorry but anyone that says a carter/edel carbs are better than holleys just doesnt know how to set up a carb for their engine.
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