In your case as with ANY of the lexan boxes on a 2x4 deal it is NOT the right way. There is a pressure loss in the scoop as air passes the first carb. Keeping the scoop the same size front to rear ensures the rear carb will NOT see the proper amount of air/benefit. There is a reason scoops are tapered in the back, it is an attempt to equalize that pressure difference from to rear. althogh it will NEVER be the same. It is also an issue in a single 4 lexan box but the drop will not be as large since you are not pulling as much air at the front, but there is still a pressure loss to the rear. Not wishing to start an argument but you are going to have to school me on this, I have a question or two. I'm no expert by any means. My understanding is that in the example described in the article, maximum engine airflow demand (1600cfm) was achieved at 47.7 mph given the size of the forward facing opening. At any speed above that, would there be a positive pressure at the rear of the scoop as the scoop is now capturing more air than the engine demands ? I agree that there must be a difference in pressure between the front and the rear on open dual carbs but my home made makralon scoop uses a common filter (and is tapered towards the rear) will this make a difference ? Also what would be the right or best way on a 2 x 4 deal ? TIA.
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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