Quote:
Originally Posted by 601HP
Well........2x750 doesn't equal 1500 with carburetors. Frankly I don't quite understand why not. 
It's time for Brent, Barry or Keith to 'splain it to us. 
David |
The engine sees the two carbs as each carb supplying 4 cylinders each.
You'll also note that his carbs are vacuum secondary, so depending on engine displacement, engine rpm etc etc, they may never fully open.
The more carburettors you have feeding the same number of cylinders, the larger the total theoretical airflow needs to be.
Less cylinders drawing from one carb produces more pulsations in the manifold.
Have you seen 6 Stromberg 97s on a Chevy V8 before?
How about the total airflow of a set of 48-51 IDA Weber (about 3000cfm) on an IR manifold? That much carb into a single plenum would be way overkill.