View Full Version : Weber Carbs
I plan on getting quotes this week on a 427 motor, and I really like the looks of the Weber carbs. I also like that they were original on the 427s, but I've heard that there are some problems with getting the Webers properly tuned at low/idle speeds.
example: http://bdpmotorsports.com/291_eng.jpg
Is this a consistent problem? Any recommendations? Are there other concerns I should have?
Gordon Levy
02-10-2014, 08:46 PM
I have set up stack EFI on 427's and it work much better than Weber's. Here a pic. https://www.facebook.com/photo.php?fbid=10151290877302888&set=a.10151290877102888.492800.326420897887&type=1&theater
We went with webers on our roadster. They are challenging to get just right. Camshaft, timing, timing curve, jets, FUEL PRESSURE!, etc. I purchased from Jim Inglese and he offers good support however you still need to be able to figure a lot on your own.
I would say you are right about low RPM driving. Since day one, anything under 2500 rpm sounding like it was missing. However when you stepped on it, they scream and go into perfect harmony... BUT... I had an intake gasket problem that i just found out about. I changed it and WOW!! Low and High RPM driving is in full sync. I still can't believe how much better it runs. It also only took 10 minutes to set the linkage and tune it this time. Generally I could spend an hour or two messing with it. Now its very consistent and holds the tune very well.
So my final thoughts are this. They look awesome, everyone that sees the car loves them. That alone pays for admission. But they can be challenging, they do run on the rich side too. To me it was totally worth it and i can't imagine not having them. But that was my dream and thats what these cars are all about.
To comment on the stacks... We purchased these for julies coupe. I am excited to play with them since they are different. For her, i think they will be perfect. They look great, however, just not the same as webers.
Oh, by the way, if you go that route, i highly recommend an electric fuel pump setup so you can shut it down on hot days because these do tend to boil over when its hot out and you stop the car with the hood closed.
club cobra also has a section dedicated to webers. Some really good info there.
QSL, thanks for the vote of confidence. I'm getting excited. Where did you get your engine? Did they work with you on the webers?
I purchased the engine from AMP performance, but I just did the ford crate 427w. I then purchased the weber setup from jim himself.
CraigS
02-11-2014, 06:50 AM
Based on my Weber experience from 25 yrs or so ago I can add just one thing. In addition to taking some time to get right, they are expensive to tune. Compared to buying a couple of jets at a time for a 4 barrel, nearly every jet change on your Webers will require 8 new jets. If I wanted the look today, I'd be looking for an injection system that is tuneable w/ a laptop.
skullandbones
02-11-2014, 07:12 PM
It's like dating a Las Vegas show girl. It's sexy but ask yourself, "is it really worth all the trouble?". If you say yes then get the Webers!!!
Good luck,
WEK.
aks801
02-13-2014, 06:18 PM
Bren, I like the way you are thinking!
Bren, I like the way you are thinking!
Sorry to disappoint, but after thinking about it for a bit, I think I'm going to use a standard carb for now. My reasoning is part price, but mostly I want something that will work properly every time, without taking a bunch of time to tune. I'm also one of those guys that will constantly ask myself if it's performing to the max, and I fear I'll drive myself insane tinkering with it.
But not to worry! Eventually, I will get the Webers once I get (relatively) bored with everything else about the build. A few years down the road.