intake manifolds

60 series what?....245,255,275
The dual planes generally pull up the low rpm torque, often at the expense of high rpm power.
Single planes generally flush out the top end power,often at the expense of idle quality, off-idle response, tip-in,as well as low speed torque.
Both generally work well in the midrange.
There are lots of exceptions.
Squealing your tires almost for a block, says almost nothing about the intake.
I sense an under-lying question