Xoutpost.com - 2004+ 4.4 slower than previous?

Quote:

Originally Posted by NMWX5

Absolutely correct and thanks for pointing that out.
There are many different factors involved that can cause differences: weather, tire tread, driver weight and response/error, altitiude, gasoline, untuned engine.

Now I recall, about 10yrs ago when I was in the compact car racing scene, I used a website that I would plug in my dyno charts before and after tuning or modding and compare 1/4 times (you can also plug in another car's figures to compare). You can be able to plug in your hp output for each rpm up to its own redline(torque can be calculated so you wont need to plug in torque) and you can plug in the weight of your vehicle, when you click on Start, you will see two cars race side by side for the whole 1/4 mile and get your estimated timeslips and it was quite accurate to my actual times, actually the times from the website is more useful than actual since it factored out the errors. I wish I can find that website. It would help us determine which 4.4 is faster.

Great info.
I admit that I havent driven either 4.4 but another determining factor is the power delivery of the car.Maybe the "valvetronic" has a softer power delivery.

Some cars "feel" faster than others but when you check the stopwatch this is not the case.

A car with more torque (like a Turbo)but with similar top end horse power will always feel faster accelerating because with the less torquey car you have to rev the "balls" off it to make it go as fast as the other.