it really comes down to diff ratio and how you drive the car..if you dawdle then there is really no difference..if you are a bit heavy on the throttle from the lights there would be a difference if you were driving a 253 auto with a 3.55 diff and your mate was driving a 308 auto with a 2.78 diff...you with 253 would be gone....way way too many variants to answer his question without personally seeing his driving style...:knockout::knockout::knockout: