This is an interesting post,I'll stick in my two cents on carburation. While searching through many Holley model 1904 single barrels for a matched set of 3, I found one consistant thing.All the carbs identified for truck use had far larger power valve jets, like .020 larger for high load operation than the carbs used for cars.The main jets were the same, but the truck model carbs had bigger air bleeds.The larger air bleed jets will tend to lean the mixture during part throttle operation.That would mean the truck carb was designed to operate mostly at full throttle. The air bleed change is necessary cause the truck engine spins more rpm,more venturi vacuum,the bleed change prevents over richening at part throttle high rpm conditions.
The above is true on Rochester carbs, except the Roch usually has a slightly larger main jet on truck models. So this kinda backs up what Hot Rod Lincoln says.
The Holley Weber is an extremely ugly but well designed unit.At wide open throttle,the HW flows around 20-30 percent more air than the typical one barrel carb.The HW has a small primary barrel,too small for decent power on a large inline six,some guys report reduced part throttle power but more when the secondary is opened on full throttle.I think Holley Webers are not the cure all and are somewhat over rated.I do know from personal experience,2 or 3 Holley Webers on a inline can make for good power and sharp throttle response.
It obivious Carbking doesn't like Holleys
