Carb question

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Carb question

Post by JGL on Mon Feb 02, 2015 9:35 am

Between Holley 600 CFM and Eddie Thunder series 650 CFM AVS carb which gives the best street performance?

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Re: Carb question

Post by Keith Mopar on Mon Feb 02, 2015 11:37 am

I find it easier to tune the Holley carbs over the AVS carb.
Second reason I don't care to much for the AVS carbs is try to read the part no. on a metering rod, dam near impossible even with a magnifying glass.

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Re: Carb question

Post by Grumpy427 on Tue Feb 03, 2015 8:30 am

In general, the Holley has always been a performance based carburetor, The tunning ability is great and can fine tune some of the smallest holes you can have due to other miss matched parts.

I had a 1406 EDDY carb on my vette, 350 hp 390 tq 350. It was a nightmare to try to get a stumble out of? i removed it put on a holley 670 avenger, re jetted and played with secondary oppening spring and i am very close. I need to get ris of the 3.08 gears, i have a new set of 3.55 gears for it so i will have to change that spring again, but at least it will be doable.

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Re: Carb question

Post by Mrmopartech on Tue Feb 03, 2015 2:41 pm

First off,we are going in the wrong direction on the topic.Fist we need to know what you are doing with the car,motor,rpm,cam,gears,driving habits,etc to pick a proper carb and CFM rating to best suit your needs.Holley,s can be a pain in the ass to tune if you never done one before,and so can a carter,or Thermoquad,or a Rodchester.If you spend time reading about them,working on them,it becomes second nature.Lets say you have a 360 and like to bring it up to 6000rpm on a open road to just clean it out,every so often,well we are looking at 750 vacuum secondary if it,s a auto car,if it,s a stick,you will go to a 750/800manual secondarys.So if you want the right carb,make and post a list of all the needs and parts you have in the car,and I can tell you the best choise,mrmopartech

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Re: Carb question

Post by 440w2r/t on Sat Feb 07, 2015 5:48 am

years ago with I had a stock 360 in my aspen, I switched to a 750 holley from a 750 eddie. picked up big time with the holley. ET was 14.8 with eddie, 14.3 with holley. I did no other changes then the carb switch.

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Re: Carb question

Post by anlauto on Sat Feb 07, 2015 6:00 am

Holley

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Re: Carb question

Post by Grumpy427 on Sat Feb 07, 2015 6:44 am

If your combination is stock, then a factory style carb works great. Once you change the cam intake headers and change timing, the signal to the carb changes, and in most cases a factory style carb wont cut it. This is where the holley takes over. Its all in what your doing with the car.

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Re: Carb question

Post by Brads70 on Sat Feb 07, 2015 8:42 am

I've have various carbs over the years but currently have this one on my 451.
99% street motor
http://www.quickfueltechnology.com/carburetors-q-series/q-series-carburetor-850cfm-drag-an.html

This hands down the best carb I've ever owned. Infinitely adjustable, every orifice that flows air or fuel is adjustable.   Proform is another good choice.

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Re: Carb question

Post by JGL on Sat Feb 07, 2015 9:43 am

Expensive buggers aren't they?...but they look good.

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Re: Carb question

Post by Grumpy427 on Sat Feb 07, 2015 9:47 am

My buddy just bought a QF 750 for his Fairlane, he gave me his old holley 4779 dbl pumper. I put a kit into it and turned it into a 4 corner idle carb. so its nice to have an old school spare sitting in the cupboard.

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Re: Carb question

Post by Coronet 500 on Sun Apr 05, 2015 6:01 am

We use a Street Demon on the modified 318 truck and like it very much.

http://www.demoncarbs.com/1900.asp

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Re: Carb question

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