Calculating gains before track?

[Na5.0HO]

Ok, here's my theory to give an idea of how much of a gain all of those goodies us snow-burdened guys have made since we can't go to the track yet.
This is JUST a theory and I haven't been able to try it myself yet.
EXAMPLE: I ran a 14.7 @ 95mph last year.. since then I have done lots of mods (intake, exhaust etc.) So I want an idea of how much this will improve my times. I find an abandoned road get a buddy with a stop watch and have him keep track of what mph I get to when the stop watch reaches 14.7. My theory is that the mph gain would offer insight on the E.T. difference.

I personally am unfamiliar with what mph and E.T.s coincide... so if anyone would like to comment or offer some more knowledge it would be appreciated.

Michigander,
Jason

 

[Timmey9]

I think it would be better to measure out a 1/4 mile and time that. i know there are ways to take a quarter mile speed and convert it to an approx horsepower. So do that with the old speed and compare it to the new one and you will get a estimate of your gains.