Originally Posted by Jeff_383
All else being equal, would there be a change in 1/4 mile times going from 3.91 to 3.55?

3900lb b body, large cube stroker, same PTC 9.5 converter (built for car with 3.91's)


Can't really say without looking at the data log or some numbers. If the car is on the rev limiter going down the track then it might pick up time. If it is traction limited it might go quicker and faster with less gear. If the 3.91 gears are perfect for the engine and car then it will slow down.