600 CFM good for a stock 460?
#1
600 CFM good for a stock 460?
I am having carb issues and I need to just replace it. It is old and worn out. I have found a new in the box Edelbrock 600 for a good price (square bore). Would this be enough carb for a bone stock 460 that is used maybe 1000 miles a year mostly to tow and haul crap?
#3
#5
I don't recommend a 600 CFM carb or an Edelbrock. Edelbrock leaves power on the table and (in my opinion) are more complex and difficult to tune than a Holley. 600 CFM is just too small and will leave power on the table. You should be looking about 750 CFM for a stock to mild 460.
For comparison sake, I've run a 600 CFM and a 750 CFM on the mild 460 in my truck and the difference was night and day. At the end of a day for a carb you're talking peanuts and little price different between 600-850 CFM so just size it properly.
For comparison sake, I've run a 600 CFM and a 750 CFM on the mild 460 in my truck and the difference was night and day. At the end of a day for a carb you're talking peanuts and little price different between 600-850 CFM so just size it properly.
#7
Unless you plan to visit the 4500+ RPM range often, the 600 will give better throttle response, and works rather well in the low-mid range RPM that is used most of the time, especially on a stock or near stock engine.
It's true that the 460 likes a bigger carb for higher RPM, particularly one that has been built for more power. But for an everyday driver, the 600 is fine. A stock/near stock 460 doesn't exceed 600 CFM until somewhere around 5000 RPM. With the current trend in gas prices, most people aren't going to running that high RPM on a daily driver.....
It's true that the 460 likes a bigger carb for higher RPM, particularly one that has been built for more power. But for an everyday driver, the 600 is fine. A stock/near stock 460 doesn't exceed 600 CFM until somewhere around 5000 RPM. With the current trend in gas prices, most people aren't going to running that high RPM on a daily driver.....
Trending Topics
#8
Unless you plan to visit the 4500+ RPM range often, the 600 will give better throttle response, and works rather well in the low-mid range RPM that is used most of the time, especially on a stock or near stock engine.
It's true that the 460 likes a bigger carb for higher RPM, particularly one that has been built for more power. But for an everyday driver, the 600 is fine. A stock/near stock 460 doesn't exceed 600 CFM until somewhere around 5000 RPM. With the current trend in gas prices, most people aren't going to running that high RPM on a daily driver.....
It's true that the 460 likes a bigger carb for higher RPM, particularly one that has been built for more power. But for an everyday driver, the 600 is fine. A stock/near stock 460 doesn't exceed 600 CFM until somewhere around 5000 RPM. With the current trend in gas prices, most people aren't going to running that high RPM on a daily driver.....
#9
I had a Edelbrock 600 CFM on my motorhome's 460, it was woefully under fueled with it on there to the point of backfiring through the carb and not wanting to go up hills.
I even went so far as to change the metering rods and springs to what an Edelbrock support tech suggested. Did not help at all. Might have worked had I changed the jets, but I didn't try. I just went back to the holley after I found a replacement primary bowl (original fuel inlet had been stripped enough to leak all the time.)
Comparing CFM between Eddies' and Holley's isn't going to cut it. The characteristics of each carbs venturii are different.
I even went so far as to change the metering rods and springs to what an Edelbrock support tech suggested. Did not help at all. Might have worked had I changed the jets, but I didn't try. I just went back to the holley after I found a replacement primary bowl (original fuel inlet had been stripped enough to leak all the time.)
Comparing CFM between Eddies' and Holley's isn't going to cut it. The characteristics of each carbs venturii are different.
Thread
Thread Starter
Forum
Replies
Last Post
blk450er
1973 - 1979 F-100 & Larger F-Series Trucks
23
05-29-2016 02:12 PM
uniequipment
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
8
08-31-2009 06:25 PM