Weber or Holley?
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Elder User
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From: Colorado
Weber or Holley?
Other posts indicate a preference for the Holley 390 4 bbl while the Cliffordperformance site recommends the Weber 40idf (430 2bbl) as the "optimum" carb for the 300-6. 'Anybody tried both? comments?
Stock engine, .060 over, 3.50 gears, 31' tires, high flow exhaust, 4spd/granny Bronco.
Also, why won't a Clifford intake work with stock (or EFI) exhaust? Other posts indicate the EFI's will help retain torque better than headers which is what i would like... unless someone knows where to get a "shorty" header (similar to EFI exhaust ???)
Stock engine, .060 over, 3.50 gears, 31' tires, high flow exhaust, 4spd/granny Bronco.
Also, why won't a Clifford intake work with stock (or EFI) exhaust? Other posts indicate the EFI's will help retain torque better than headers which is what i would like... unless someone knows where to get a "shorty" header (similar to EFI exhaust ???)
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From: Broken Arrow, OK
Weber or Holley?
As a general rule, anytime you have the choice of a 2 barrel of 4 barrel of the same flwo rating, the 4 barrel will be the better all around carb. In this case, this is even more true because the 2 barrel is roughly 25% larger than the 4 barrel. What this means is that the venturis are larger, which results in a reduced signal to the boosters. The 4 barrel will have a much better signal do to higher airspeed through the venturis, producing better air metering. There are also several different styles of Weber carb, some of which are very complex. The simpler ones are pretty much identical to a Carter/Edelbrock. That's what Mercruiser used on their inboard engines when I worked there.
Clifford probably recommends the Weber because that is what they sell. They don't care about anything but getting your money.
Clifford probably recommends the Weber because that is what they sell. They don't care about anything but getting your money.
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From: Colorado
Weber or Holley?
That message came through loud and clear when they finally responded to my request for carb & header info with 2 header part #'s (good & best) and nothing about webers. I got the Clifford manifold for fifty bucks so I guess I'll go ahead and give it a run... Please send Demon 525 info (or smaller - if they have it and you think it would apply - Thanks, broncr
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From: Broken Arrow, OK
Weber or Holley?
525 is the smallest the Demons currently go, but a 525 4 barrel would be better on the street than a 430 2 barrel. When you aren't on the gas the 525 will act like a 260 2 barrel, which wouldn't be too bad. The Demons come standard with powervalve blow out protection and clear sight glasses on the bowls. Summit sells it for $260, manual choke kit is $35 and electric is $50.
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Weber or Holley?
https://www.ford-trucks.com/articles/carb.php
A 525cfm 4bbl won't act like a ~260cfm 2bbl when you're not in the secondaries, it'll act like a 371cfm 2bbl. Regardless, a well tuned 2bbl or 4bbl will net you better driveability, power and economy than the 1bbl. The problem being that making it 'well tuned' typically takes a loooong time.....
-=Whittey=-
A 525cfm 4bbl won't act like a ~260cfm 2bbl when you're not in the secondaries, it'll act like a 371cfm 2bbl. Regardless, a well tuned 2bbl or 4bbl will net you better driveability, power and economy than the 1bbl. The problem being that making it 'well tuned' typically takes a loooong time.....
-=Whittey=-
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Joined: May 2002
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From: Broken Arrow, OK
Weber or Holley?
I was kinda hoping to avoid the flow rating game because it isn't necessarily as straight forward as it seems in that thread. Don't get me wrong, everything mentioned is true. It's just that it doesn't necessarily work the same on the vehicle as it does on the calculator. Regardless, the 525 will work better just tooling around than the 430 2 barrel will.
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