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Holley SD intake will take all the low end torque away, I tried it several different ways on my 383. In the great intake dyno test it was down something like 30ft lbs @3000rpm to a dp4b, imagine how bad it was way down low.
when it was still NA and carb'ed, my car had a lot more grunt from an idle with the stock intake and 3.23's then it did with the SD and 3.91's.
did you have the open or dual plane SD? i was talking about the low profile dual plane
I didn't know there was a DP SD!!!!
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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