70 dart swinger slant turbo build and mild restoration
But people have also thrown 28 pounds of boost to a slant and just barely breached 300hp.
I guess my project falls somewhere in the middle of all this. My turbo'd 225 made a run on 15 pounds of boost with a total weight of 3,000-pounds. The track was slick and my driver had to lift three times to avoid hitting the guardrail. The timeslip said 91.5 mph. This is an eighth-mile facility. I entered that info in the Wallace online automotive calculator and it came back that it requires 357 horsepower to turn that speed in an eighth-mile. Made me wonder what the result would have been if the driver had not had to lift three times... There was no time for a re-run.
The cars that I am aware of that run 225's with 28 pounds of boost make about 500 horsepower, according to the Wallace online calculator. They are the slant sixes that I copied as closely as I could when I built my motor. Both have flat tappet cams, a 5,500-rpm redline and use a Holley double-pumper, four barrel 4150-design, carburetor.
As I have said before, ~I~ didn't think this stuff up on my own; I'm just NOT that smart! Tom Wolfe in Michigan had already done this turbo 225 thing (as had Ryan Peterson) and I just copied what they had done. So far, I think it is an unqualified success. Next spring, I will return to the strip, hopefully with some bigger tires, and try to run an additional 5 pounds of boost for a better e.t. Pray for me...:prayer::prayer::prayer:
