Initially we went the easy route for a 16 second car: the 383 in our 70 RR was so worn out it used a quart of oil every tank of gas. When I went to the track I would put "Cropduster" in the spot for the car's name.

Then I sent the engine to DRAM and now it goes 12.7's, hopefully with the new 1.6 rockers and putting a shaft stop on the distributor it will pick up a bit more. It took a little while to get from the 14's to 13's to 12's between tires (switching from 225-70/14's to 28 11.5-15 ET Streets made a BIG difference), exhaust and most importantly practice but the importance of good machine work cannot be overemphasized