Here's the Jeep 4.0 exhaust port/intake port......
My jaw dropped when I saw the exhaust port size.
The new cam has more duration increase for the exhaust, than it does for the intake. Both have a little more, plus more lift. It was also ground on a wider LS angle to maintain stock-like vacuum signal, because this engine management relies on MAP sensor data for controlling everything. It's a custom designed cam to work around these limitations without having a Check Engine light come on... very happy with it.
Add more compression, BANKS power tune programming and another 2 degrees extra ignition advance throughout the rpm range, and 94 octane fuel... God I wish the Nova made this much power.
