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Post by twisted66 on Apr 10, 2013 18:37:23 GMT -5
I'm looking into buying a new Holley 4412. I've talked with both Baldwin and quick fuel. Quick fuel has Baldwin beat on price by a significant amount of money and seems to be a little more in my price range. Does anybody here have any experience with quick fuel? I talked with the builder for about 30 minutes on the phone and he seemed to know his stuff. And I was under the impression that building and setting up carbs for derby use is not something new to him. Does anybody have any input? Also what's the best adapter to bolt this carb to a 4bbl manifold? Thanks for any help.
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Post by blackmopar21 on Apr 10, 2013 19:34:51 GMT -5
I wouldn't run any Holley based carb but quick fuel. I run their 750 4brrl and the response is unreal. Same goes with their 2brrl's.
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Post by hotrod316 on Jul 21, 2013 20:21:58 GMT -5
Baldwin did mine and it was worth every penny..... just trying to find someone that can build a good carb to run in the derby
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Post by bigblocker17x on Nov 22, 2013 0:38:04 GMT -5
I have 2 holley 4 barrels 600 cfm off of old ford trucks from the research ive done, they are the holley/motorcraft 4 barrels and ive taken the electric choke etc. off and I was going to rebuild them, my question is are these suitable for use on chevy 350's or slightly modified 350's or 355's ive ran 2 barrels and 4 barrels and I prefer the 4 barrel but ive ran edelbrock 650's and never tried these so what do you guys think and have anyone ran them, if so howd they do? one was from a 302 and the other from a 460 going by the list numbers off of the choke horn
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dm440c
Feature Winner
derby drivers against drama- there's no crying in demo derby!
Posts: 2,824
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Post by dm440c on Nov 22, 2013 13:15:59 GMT -5
hey guys quick question, would I be better off with a 2 barrel or 4 barrel on my 383? .... there is a thread in the General Build Tips section from a week or so ago dealing with the issue of 2 bbl vs. 4 bbl and if you find it you may find some interesting info. My answer is that it does not matter whether it is a 2 bbl or 4 bbl, it only matters whether it is tuned correctly. A well tuned Quadrajet vs. a well tuned Edelbrock vs. a well tuned Holley Double Pumper vs. a well tuned Holley 4412 vs. a well tuned whatever is a nowhere conversation, but a carb of any description that is not well tuned is worth a lot of discussion. P.S. this is a very viable discussion when it comes to drag or circle track racing but for demo derby purposes it really doesn't matter what carb you use as long as it is well tuned. I think I repeated that enough. Maybe one more: It just needs to be well tuned. I borrowed some discussion from the Mopar carburetor thread to use here... referring to the questions above regarding carb type and size, I think people get way too clogged up worrying about whether 500 CFM or 600 CFM is the perfect amount for their engine when a derby engine typically sees a lot of different operating conditions and cannot be realistically optimized for just one airflow rating using the same strategies that would be applied to a race engine. I submit for your consideration the notion that a wide range of advertised CFM can be made to work quite well on any derby engine just by tweaking the basics (jetting/metering, idle air bleed, etc.), so it's not a productive discussion to debate 500 CFM vs. 600 CFM vs. whatever. Likewise, 2 bbl vs. 4 bbl is not a productive discussion either... people throw around terms like "throttle response" as if it is purely a function of carburetor model rather than specific tuning and application demands. Brand and model is not a productive discussion in the general sense because there is no consensus to be had; for every guy who swears by carburetor X there is another guy who says it isn't worth using as a wheel chock. It comes down to this- the d@mn thing has to be in good working condition and tuned relatively close to the particular engine it is bolted to and then you will get what you wanted. I don't care if it is a 350 CFM Rochester or an 850 CFM Holley double pumper, both can be tweaked to run great on 98% of the v8 engines typically found in a derby car. If you pull a carb out of a pile of parts and the inside of it looks like it was stored in the ocean you probably won't be happy with it. If you buy a carb off the shelf and don't know how to tune it you may... or may not... be happy with it. If you buy one and do know how to tune it you will probably be happy with it. If you pay someone to tune it for you and they know what they are doing you will probably be happy with it. What the carb actually is in terms of model and size almost doesn't matter at all, and certainly doesn't matter near as much as the previous four statements. That's the bottom line- either learn how to tune or pay someone who is competent to do the tuning for you, the rest doesn't really matter.
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Post by rudi158 on Nov 25, 2013 11:05:51 GMT -5
We run 2 barrel motor crafts and holleys as far as jets check your plugs after running it awhile if they still look white put bigger jets in if there black looking and it runs good I'd leave it alone I also run 2 fuel filters on mine it lowers the fuel pressure because my needle seat is wore out
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Post by redneckracing12 on Nov 25, 2013 13:35:30 GMT -5
We run 2 barrel motor crafts and holleys as far as jets check your plugs after running it awhile if they still look white put bigger jets in if there black looking and it runs good I'd leave it alone I also run 2 fuel filters on mine it lowers the fuel pressure because my needle seat is wore out I dont even know what to say about you last sentence. That may be the most ridiculous statement I have heard in a long time. Why not just replace the needle and seat?
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Post by rudi158 on Nov 25, 2013 14:25:01 GMT -5
I'm cheap and just haven't got around to it but if I take one off my carb floods I've ran it like that for at least 5 yrs
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Post by allen24 on Nov 25, 2013 16:30:52 GMT -5
I like Holley 500 2 barrels. We use them on a lot of different motors. They love the dirt and abuse.
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Post by redneckracing12 on Nov 25, 2013 17:38:09 GMT -5
I'm cheap and just haven't got around to it but if I take one off my carb floods I've ran it like that for at least 5 yrs the price of a decent fuel filter is the same cost as a needle and seat assembly. How many psi of fuel pressure are you running?
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Post by 46below0 on Mar 3, 2014 20:06:03 GMT -5
Can anyone tell me about a holley 3310-2 my buddy gave it to me I don't know shite about carbs at all always have ran quadrajets at the mercy of it being tuned good enough already or turning screws til it seemed good haha I'm putting it on a stock 350 gotta get an adapter plate I know and that's about all I know
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61j
Heat Winner
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Post by 61j on Mar 3, 2014 20:13:38 GMT -5
Can anyone tell me about a holley 3310-2 my buddy gave it to me I don't know shite about carbs at all always have ran quadrajets at the mercy of it being tuned good enough already or turning screws til it seemed good haha I'm putting it on a stock 350 gotta get an adapter plate I know and that's about all I know It's A 750 Cfm Double Pumper I Believe. Way Too Big For A Stock 350.
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Post by redneckracing12 on Mar 3, 2014 20:19:20 GMT -5
Can anyone tell me about a holley 3310-2 my buddy gave it to me I don't know shite about carbs at all always have ran quadrajets at the mercy of it being tuned good enough already or turning screws til it seemed good haha I'm putting it on a stock 350 gotta get an adapter plate I know and that's about all I know 4160 series 750 cfm vac secondary carb. As for the tuning of it holley has a forum that will help educate you in the tuning of carbs heres the link....it has a lot of good information on it forums.holley.com/forum.php
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Post by 46below0 on Mar 3, 2014 20:44:19 GMT -5
Thanks guys why would it be too much
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61j
Heat Winner
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Post by 61j on Mar 3, 2014 21:57:21 GMT -5
It's Just A Lot Of Fuel And Air That You Can't Get In And Out Of A Stock Engine. You Would Need More Compression And Little Bit Bigger Cam To Make It Work Good For You.
If You Jet It Down To Work With What You Have Then You Will Have Too Much Air And It Not Perform The Way You Want.
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