6.4L 392 head porting.
NA 392 Apache — CNC ports, big valves, the works. Real top-end on a built 392.
CNC ported in-house in Nashville
Flow sheet with every set
Ship them in or drop them off
$1,200per pair · both heads
Peak flow gain
+31 CFMat 0.700″ lift
Ported peak
363 CFM332 cfm stock
Price
$1,200per pair, CNC ported
Flow data
What this head actually flows.
StockCarma CNC port
Intake flow at 28″ — stock and ported, both measured on our own SF-1020 flow bench.
+31 CFM at 0.700″ lift — 332 cfm stock to 363 cfm ported, the biggest single gain on this head.
The port work
What we do to it.
NA 392 Apache heads — CNC ports, big valves, the works. Real top-end on a built 392.
The spec
Fitment and pricing.
Engine
HEMI 6.4L 392
Configuration
Pair (both heads)
Fits
Scat Pack / 392 — Charger · Challenger · Durango · Grand Cherokee SRT · Ram 2500
Best paired with
Cam, intake, long-tube headers.
Price
$1,200 per pair
Add-ons
Valve upgrades for this head.
Offered with the port work on this platform, fitted while the heads are apart.
Stainless Intake Valves (set of 8)Stainless · swirl-polish · chrome stem · hard tip
+$99.92
Stainless Exhaust Valves (set of 8)Stainless · swirl-polish · chrome stem · hard tip
+$91.92
Inconel Exhaust Valves (set of 8)Race-grade Inconel exhaust
+$263.12
Related
The rest of the combination.
Ship them in or drop them off.
Heads can come to us on a pallet or still on the car. Tell us the combination you are building and we will tell you honestly whether porting is the right next step for it.