My Dakota would run 6.20's in the 8th mile and 9.70's in the 1/4. very next pass my buddy now current owner of the truck LOL Jumped in and made a pass. He's about 75 lbs lighter the truck picked up about a half a tenth overall
So its not exact, and diff combo's would vary. Im sure a high winding small block in a moderate heavy car would show diff gains than a 500 inch big block in the same car....JMO