Originally Posted by fast68plymouth
Originally Posted by BIGSTROKER
The mopar 383 6 pack intake does not have enough runner volume
The 440 is just right
The mod man has no velocity


Uumm....what happens to the runner volume when you cut an inch in length off the head?

The head volume and runner volume cannot(well, “should not”) be looked at separately.
It is the total runner volume from the manifold plenum to the intake valve as a unit that should be considered.


And THIS ^^^^^^

1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5