Cheap 383 dyno numbers

[Babyblue66]

That’s the intake for you.

The 750 4779 was a little leaner on the opposite side lower in the pull but evened out.

 

[Paul Secoy]

Dang that's moving. What gears did you have?

I ran it both with 3.91's. and 4.88's. The car got maybe 9 passes total, and it was quickest with the 4.88's, (29" tire). I had a bunch of people tell me I was over geared, so I tried the 3.91's. It slowed the car down about 2 tenths, but it picked up a bunch of Mph, as it was out of wind early with the lower gears. It ran 1.7 60' times, not great, but ok. I didn't get to do any tuning to it, and never figured out why it ran best shifting so low.

I shifted at 6,000 first pass, it ran a low 13, and felt like it was flattening off, second pass I tried 5,500 and it went 12.7 something, 3rd pass I shifted at 5,000 and it went 12.38. Still a mystery how I built a tow truck 383 lol.