5.4L Lightning / Harley CNC Ported Heads
Add tremendous power to your 5.4L Lightning or Harley!
• JDM's ported heads are done on a 5 axis CNC machine
• When time came to choosing a head porting design we sent four separate heads out to four of the best hand porters in the world
• We then flow tested each one on a flow bench. After the flow testing we came up with our design off of bits and pieces of our hand porters design
• We dyno tested the heads and came up with two more changes before our final design
• 60 HP & 60 ft-lbs gain
• Pre-installed Camshafts.

 

I woudn't let JDM put air in my tires, let alone my engine.

/sorry, I forgot this isn't the Lightning forum...

 

They'd probably physically bolt up since they're same basic block. Whether or not they'd work, I dunno. I don't think they would, not without some tinkering and tweaking.

 

I think they were for the 2 valve head. and they were both supercharged I believe.
forced induction and naturally aspired both have very different demands for airflow.

 

Whats the price.

 

You get the lift?