More Power
Fleet Mechanic
Joined: Oct 2025
Posts: 1,706
Likes: 371
Depending on your mechanic skills, but you can get a spare head from a junkyard. Take your time, watch videos and read forums. Port the head to help it flow better. When you install, put higher ratio rocker arms, you’ll notice the difference. If you do the work yourself, the price/hp gain is worth it.
Lead Driver
Joined: Sep 2002
Posts: 9,497
Likes: 2,020
From: North Texas
Yep, port the head. 1.72:1 Scorpions. 3.55:1 gears. Regrind your cam for a bit more ***, cam cores are very hard to find for the L6. High flow muffler of some sort.
That is about it that will pass smog and still allow use of the stock fuel injectors.
That is about it that will pass smog and still allow use of the stock fuel injectors.
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