408/ 904 trans

I think you'll find on tracks with poor prep the car will have start line issues. On a good track it will work fine. My car has a 530ish HP motor, 5800K converter, low first gear 904, 4.56 gear, and 28x10.5 tire. It will 60 in the 1.39-1.4 range on a good track, but on a crap track it will 60 in the 1.5+ range. The high and rear location of the instant center of the A body rear suspension leads to a violent hit at launch which is compounded by a high start line gear ratio.