To get 400 HP out of that engine will kill gas mileage to about 8mpg. With an Gen3+ engine you can still get 16+ mpg with over 400 HP.
To get 400 HP out of that engine will kill gas mileage to about 8mpg. With an Gen3+ engine you can still get 16+ mpg with over 400 HP.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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