Late, but its a small plenum single plane aimed at the guys who want the racy kinda **** but don't want all the negative effects of weaker signal/low speed torque loss, its a inbetween kinda intake imo.
I ran the earlier version with port matching done on my 340 combo of a solid mp.528 solid, mild port heads , 9.5 comp, headers,4 sod, 3.73's, up until about 2 1/2 yrs ago when I replaced it with an as cast ld340 dual plane.
The ld340 picked up from 9.5 inch of vacuum to 12''! And obviously pulls harder under 6200 , but the weiand would pull strong through 6200-6500 and run out of ponies around 7200...but like dual planes do..the weiand couldn't. I ran a 13.8 with the weiand on 25'' street tires just spinnin.... if I had the ld..the tires would have blown off even harder. Felt like the weiand was about 25 ft lbs of tq below the better dual planes.
