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Wayne,

When you dyno a freshly built motor, you can:

Break it in in a controlled environment,
Check for leaks very easily,
Tune it (with verification) for the most power your combo will allow,
Get the exact HP and TQ figures for your motor,
If you chassis dyno it later, you can figure drivetrain loss.

It's not entirely necessary for the street, but after spending $X,000 on a new motor, what's another $500 bucks to get the most out of it?

Michael
It's money well spent.

Initial ignition advance at idle can be determined with the motor unloaded, but the total advance can only be determined under load, on a dyno.

This is the easiest way to dial in a carburetor too.

An engine that is dialed in runs smoothly from idle to red line. Achieving that is always a good feeling.

your friend on the PIBB, George
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