The Time Has Come - 408 Cubic Inches.
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Joined: Apr 2010
Posts: 87,466
Likes: 4,220
From: Clayton MI
Tunes control spark knock by either dialing back timing, or raising mixture ratio. (run it a tad richer.)
Get all the information together (except for pistons) for figuring your CR, then pick pistons based on that, and a zero deck. You can also use thicker headgaskets to lower CR some.
What would be really nice, is if Dodge had had the intelligence to include a knock sensor on these motors.......
Get all the information together (except for pistons) for figuring your CR, then pick pistons based on that, and a zero deck. You can also use thicker headgaskets to lower CR some.
What would be really nice, is if Dodge had had the intelligence to include a knock sensor on these motors.......
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Captain
Joined: Jan 2011
Posts: 725
Likes: 2
From: Central Missouri
Tunes control spark knock by either dialing back timing, or raising mixture ratio. (run it a tad richer.)
Get all the information together (except for pistons) for figuring your CR, then pick pistons based on that, and a zero deck. You can also use thicker headgaskets to lower CR some.
What would be really nice, is if Dodge had had the intelligence to include a knock sensor on these motors.......
Get all the information together (except for pistons) for figuring your CR, then pick pistons based on that, and a zero deck. You can also use thicker headgaskets to lower CR some.
What would be really nice, is if Dodge had had the intelligence to include a knock sensor on these motors.......
With SBC I have a good grasp of where knock and ping comes in based on SCR on various octane ratings and head material. With Dodge I have limited experience.
Basically, with iron heads and a minimum of 91 octane...what's the SCR ceiling? Where does knock and ping become an issue? I know that cam choice plays a huge role but let's dumb this down to an average ceiling for the sake of tangible numbers.