Carb Help!
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On The Tree
iTrader: (1)
Joined: Feb 2009
Posts: 147
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From: Bowling Green, KY
Carb Help! So as most of you know I have an 81 corvette that sits too much lol. I'd like to get it running as my DD so that I can use my camaro as more of a weekend car. I've been told one of the things it needs is a decent carb because the one on it is junk apparently. I, however, know very little about carbs so I don't really know what to buy.
Here is what "I" am looking for in a carb:
-Fairly Reliable
-Will bolt on and run out of the box w/o much adjustment
I know I'll have to buy a new intake as well, so I'm prepared to throw down some cash. I just don't know what to buy!!! Help
Here is what "I" am looking for in a carb:
-Fairly Reliable
-Will bolt on and run out of the box w/o much adjustment
I know I'll have to buy a new intake as well, so I'm prepared to throw down some cash. I just don't know what to buy!!! Help
Teching In
Joined: Feb 2011
Posts: 5
Likes: 0
as a daily I would put a vacume secondary carb on it. Give us some more info on what your working with. If you don't know anything about carbs and dont plan on racing this at all, an edelbrock is cheap and very easy to tune.
Teching In
Joined: Dec 2007
Posts: 17
Likes: 0
From: ATL, GA
carb choice I would recommend a 650 and it can be just about any one of the many Holleys. As long as it is built right and run on a dyno to set the fuel curve for your engine. I have been running my chassis dyno 12 hours a day for the last 20+ years and send out 20-30 carbs a month.
I have one Vette customer that I put one of my old Busch 390 carbs on his car and it gets 21mpg and makes over 500rwhp. 406" SBC. People alway run way to big of a carb on engines because they really don't understand that increasing the air velocity increases the size of the carb that the engine is seeing...how else did the old Busch engine make 725HP at 9:1CR and 358".
The carb needs to be calibrated to the fuel you will be running as the fuel density of every pump gas differs greatly, yea you can run whatever you want but Chevron is by far the most consistent and makes the most power of any pump gas I have tested to date. Sure you can swap but if you go to Quick-Trip it can kill 20-30hp that quick on a 400RWHP car, I know because I did the testing with my 94 Z-28.
What carb does it have on it? You might just have a bad one. If you want it tested or want another one custom built for your application let me know. You also have to understand that carburetors operate of vacuum and that is why some work better than others. No O2 sensors or mass air flow to adjust so you have to get them dialed in pretty close to start with.
Just hit me back on my e-mail if you have any additional???
Buying a store bought carburetor is a waste of time and money unless you cut your own hair with a flow-bee and are satisfied with it...
I have one Vette customer that I put one of my old Busch 390 carbs on his car and it gets 21mpg and makes over 500rwhp. 406" SBC. People alway run way to big of a carb on engines because they really don't understand that increasing the air velocity increases the size of the carb that the engine is seeing...how else did the old Busch engine make 725HP at 9:1CR and 358".
The carb needs to be calibrated to the fuel you will be running as the fuel density of every pump gas differs greatly, yea you can run whatever you want but Chevron is by far the most consistent and makes the most power of any pump gas I have tested to date. Sure you can swap but if you go to Quick-Trip it can kill 20-30hp that quick on a 400RWHP car, I know because I did the testing with my 94 Z-28.
What carb does it have on it? You might just have a bad one. If you want it tested or want another one custom built for your application let me know. You also have to understand that carburetors operate of vacuum and that is why some work better than others. No O2 sensors or mass air flow to adjust so you have to get them dialed in pretty close to start with.
Just hit me back on my e-mail if you have any additional???
Buying a store bought carburetor is a waste of time and money unless you cut your own hair with a flow-bee and are satisfied with it...
Teching In
Joined: Jan 2011
Posts: 10
Likes: 0
From: DODGE CITY, KS
just a dd-edelbrock carb or holley vac. secondary. edelbrocks dont give as much hp but are a little more easily tuned. as long as the motor isn't to wild. holleys have more adjustability. and rpm air gap intake if clearance isn't an issue.
performance- Holley dp all the way and high rise single plane.
performance- Holley dp all the way and high rise single plane.
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On The Tree
Joined: Oct 2010
Posts: 127
Likes: 0
i agree with the edelbrock, most i have come across bolt on and drive very well right out of the box on your average small block, definately dont go too big tho, a 600 is lots for most people, i have a 600 cfm eddy on a vic jr intake with rpm heads makes about 425hp and gets 18-20 mpg, love the edelbrocks for reliability, holley always seem to need some messing with.
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