Well, after driving my car for the last couple of years, I finally had a professional dyno tune done this week. Ever since I moved to Salt Lake City from the SF Bay area, my car has been running poorly, and I'm sure living at over 4500' of elevation hasn't helped. I found a shop recommended through a local Mustang group called Premiere Performance.
Specs:
351w roller engine
Comp Cams 236 / 240 duration @.050 ..555 / 576 Lift
Edelbrock 800cfm carb on a Edelbrock RPM Air Gap manifold
The car's first dyno run only produced 314hp / 324 ft.lbs @ 5400 rpm.
During the day the tuner mechanic sorted through all the variables. He jetted down the carb a lot and changed metering rods, advanced the timing and checked the distributor springs, replace a coil wire, and adjusted the fuel pressure.
After taking a few more dyno runs and fine tuning all the variables...
The best dyno run was 370 hp / 375 ft.lbs @ 5300 rpm.
Not too shabby in my book, and just about what the engine builder estimated (400hp+ @ the flywheel). Most importantly, the engine is running better than it ever has. Throttle response is extra crisp and it pulls strong and smooth from 2200 rpm to 5500 rpm. I should of had it professionally tuned a long time ago.
The only draw back was the expense (<$400; it was on the dyno almost a full day), but I think it was worth it. I never came close to having the engine run so well by own efforts, even when I thought it was running well while living at sea level.
Car on the dyno
Pic of dyno sheet (crappy cell phone pic)
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