Holley's science vs Edelbrock simplicity?

318willrun said
In all fairness, this notion "eddies work out of the box and hollies don't" just isn't right. I've bought new holley carbs and never had a single one that didn't bolt on and run real good right out of the box. The only difference is, with the holley you can fine tune good in to great (that last tenth at the strip you were talk'n about). Just because you have more tuning options with a Holley doesn't mean they don't run good out of the box. However, I've had eddies that couldn't get rid of a bog out of the hole, and not enough tuning features so I had to ditch the carb... for a holley and tuned the bog out.

This is absolutely 99% dead on balls accurate the truth.
And this is also where the above line of “Tuning overload “ comes in. The amount of tuning points in a Holley can fry the brain. When your used to dealing with a Holley, there’s no sweat involved. When your new or not so experienced, your brain melts with options.

512Stroker said
I had no idea
Great info, keep it coming

What do you want to know?

66fs said
Later AFB's had a velocity valve but was a weight driven opening. The universal models were heavy where OEM carbs were tailored closer. A 273 had a very light opening where a larger engine might have a heavier opening rate. The only way to modify the opening rate on these carbs was to drill the weights or add weight to the valve. The purpose of these valves and the better spring adjustable valves is the size of the carb can easily adapted to a large range of engine sizes and performance levels. No power valves, no sensitivity to cfm for a specific engine.

This reminds me of something;

The early AFB carbs were a little different than later years. One model that comes to mind was on a friends ‘67 - 440 in his land yacht. The small neck AFB had no secondary air door at all. It was also a small 600.

When I was a younger man. I had my ups and downs with the AFB. I always considered the Carter/Edelbrock carb a street and high performance carb. Not a race carb. Regular less of what other people have done with them, I found that a smaller carb, no matter the make, works a fair bit better on the street for an actual driver. (As most of know) This I have found very true of the AFB. Since the counter weighted door isn’t so easy to modify for its opening rate & timing. This is where I like the AVS (& the TQ) much better for that tunable secondary air door.