I'm pushing 496 safely with my tune from Jon @ Z1. 5k miles boosted n she sees full boost EVERY time. I drive pretty hard, lot of street fun. As I said the DE motors were good to 429 before rods went. These motors r stronger so not sure why people seem to stop at the safe point of the old DE block. Christian also is running good torque. I think I even seen superchargers with the same amount of torque... I guess the crowd here is different.
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