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  #1 (permalink)  
Old 03-19-2003, 07:24 PM
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Question Edlebrock or Holley?

I have `75 351W and want to change my intake to a 4V.
I want to change the cast iron manifold to aluminum.
I'm not sure to go with the Weiand Stealth or the Edlebrock Performer, what's better for me?
I'm also thinking about the carb.
Edlebrock seems to be less expensive than Holley.
I'm thinking about a 600-700 cfm.
What's the better way to go? <img src="graemlins/spank.gif" border="0" alt="[spank]" />
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Old 03-19-2003, 07:35 PM
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I have to edlebrock preformer carbs, they are great, one is 600cfm and the other is a 750. I would go with edlebrock any day, I've heard some bad things about holly, athough it was about all their older carbs. David I expect to hear from you on this one. :p
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Old 03-19-2003, 10:24 PM
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For a basic day to day car that you don't wanna have to tune get an edelbrock.

For something for high power get a newer holly, this is just my opinion.

I konw that holleys need to be adjusted more often and that the older holleys had power valve blowouts, although a guy I know has never had a problem with any of his holleys. Holleys are very simple to tune especially the floats, we had probs with the carb while in the city cuz of dirt and stuff, we checked it out and adjusted the floats in about 5 minutes. Also I have heard that with a holley you can expect a little more power although I'm not too sure about this.

Either way it is which one you like better, I won't go with edelbrock or anything else with internal floats cuz that is my personal prefrence. You gotta try em both out and decide which one you like better.
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Old 03-20-2003, 04:24 AM
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On small block engines i do not think you can beat a 600 cfm elec choke Edlbrock. It is a dream for street rigs.
2 penny`s worth.
Slider in Wa.
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Old 03-20-2003, 05:09 AM
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I have to agree with slider, that's what I got...

It bolted straight on, no hassel, adjusted idle and everything else is damn near perfect,

I wish there was an easier way of manually opening the choke as I run an engine pre-heater that heats the block to 175F before I go anywhere in it, but when I don't have time to wait for that the elecy choke works great
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Old 03-20-2003, 06:31 AM
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From what I understand, (new) Holley intakes are the same product as the former Weiand product. The Edelbrock performer intake seems to be the most popular street/strip intake. I have the old Rochester QJ that I am going to replace with a Holley after I rebuild it. I had a Holley 4bbl on my last ford with a 351W HO, and that was the hot set up...I loved it even though it was in a Club Wagon. I have heard nothing but solid praise about the BG "Street Demon", but you're gonna pay for that.

If you are going from a 2bbl set-up to a 4bbl set-up with no other HP enhancing mods in place, I'd recommend using an aluminum dual plenum intake instead of a single plenum regardless of who makes it. If you don't, you might find a stall or "flat spot" on the git-go because you'll be feeding the stock motor a bit too much gas all at once. Also, find a good CFM/RPM/HP formula (math)and don't go too high on CFM (600 as mentioned sounds great to start). Also, I guess I prefer the electric choke.

One last thing, when you do this upgrade, be sure you give it a fresh tune-up, and add whatever mods you have one at a time. I would tune up with the 2bbl first to be sure there was no hesitation issues, because when you put the mod in place, you don't need a half-dozen potential problems in scattered places to drive you insane, or have you taking things on and off to troubleshoot.

(my 2 cents)
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Old 03-20-2003, 06:46 AM
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I agree with the others I am running a 750 CFM on my 355 and it has been tuned once and no problems whats so ever but if you ever want to get more than an occasional light to light burst or put it on the track than you might want to go Holley!!!

[ March 20, 2003: Message edited by: rehjr0219 ]</p>
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Old 03-20-2003, 08:40 AM
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I've heard Holley's have an additional gasket that Edelbrock's don't so there is an additional chance for leaks. Maybe a little clarification on that?
I personally would go with the Edelbrock.
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Old 03-20-2003, 09:28 AM
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holley's have a gasket below the fuel level and edelbrocks don't

so if the gasket goes on the holley, you potentially end up with fuel leaking all over your engine

I'd imagine that that is fairly rare though
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Old 03-20-2003, 09:32 AM
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Sounds pretty rare, but I abide by the KISS principle (Keep It Simple Stupid). One less thing to go ever worry about! :p
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Old 03-21-2003, 03:48 AM
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the intake, performer , would be a good choice there are lots of them on e bay for the 351 if you don't have any other mods ,i would rec a600 cfm, either one would be a good choice. lol
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Old 03-21-2003, 10:46 AM
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I have had both Edelbrock and Holley, and I prefer Edelbrock because of its street manners and simplicity in tuning. A Holley will make more hp, and the Demon carbs even more. But there are more tuning variables to deal with. There are those who will disagree with me, but unless you have a really hot street engine, go with the Edelbrock. My two cents worth . . .
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Old 02-23-2004, 09:35 AM
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Edelbrock vs Holley Heat dissipation

I have Edelbrock 750cfms on both my 69 Camaro and 66 GTO. I found that the casting metal used on the Edelbrocks allows more heat to conduct to the fuel bowls thus "boiling the gas" when the engine sits idle between runs. I solved this problem by installing a spacer heat gasket between the carb and the intake. I also used an aluminum plate between the carb and the spacer to help dissipate heat and help keep hot air from rising off the intake and heating up the carb.
Of course, hood clearence is a consideration when using any kind of spacer. The 400 in my GTO allows for a spacer and plate. My 69 Camaro has a 454 big block, and I'm having the same problem with it. I can install a plate, but I don't have enough room for a heat spacer. I might have to go with a Holley on the Camaro because that carb conducts a bit less heat than the Edelbrock.
I like the Edelbrock's ease of tuning, even though you have to take the carb off and apart to get to the jets. I don't have a problem with that. Living here in Denver, every hotrodder I know can take a carb apart blindfolded...just from all of the altitude adjustments that need to be made to the jets.
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Old 02-23-2004, 10:03 AM
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MeligN-

The advice you have been getting has been very good. These guys know their stuff. The tech guys at Edelbrock and Holley also know the best of applications. Give them a call and they'll ask you a buch of questions. what is your compression ratio? Lift and duration of the cam? Will you be racing vs. hard street driving? I just went through these issues for my application(built 383). Good luck. Mike
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Old 02-26-2004, 12:17 PM
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what is in this motor. are we talking stock or built, for a truck or a car, or what kind of use.high rpms or low end. i would for torque run a performer. dual plane good for torque. good truck intake. now if higher rpms are needed and the motor is set up run a victor jr or a torker. now when it comes to a carb dont even waste your time on a edelbrock. they suck. run a holley you will be happy. if tuning isnt for you run a street avenger holley. most cases they dont need to be tuned. go for a 600 or 650 that will be perfect.
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