could the intake be holding my low end down?

Torker II is good

Original Torker 340, smelter material.
Years back I was looking to build my '67 Dart on the CHEAP. I got the car with no engine or trans so I got a reringed 360 short block and found a pair of '308 heads for it. A guy in the local car club had an "Aluminum 4 barrel" intake cheap...I went over and saw it was an S.P.2 P. I went ahead and used it.
The car was a pig. Power was weak at all points even with a 3.55 diff. I found a Weiand 4 barrel mid rise intake and pulled the SP2P. Looking at the ports, the SP2P had smaller ports than a stock 2 barrel intake. What a piece of ****!
The Weiand allowed the 360 to breathe and the car hauled *** with it.
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