OEM Dyno Comparo

Hi guys

I ran across a couple of oem head based combo files earlier today while looking for something else

One of them is among the best set of curves I've seen

The other is more in the middle of the range you usually see

I've noticed a lot of oem combo Q's lately
so ..........
I thought those peeps might like to see the data



Grady

SeventyMach1 said:

Thanks a bunch man. Been looking for something like that.


However, the "P dyno" seemed to have a few more advantages. I wonder if there is an "identical" comparison out there?

Click to expand...

I'm sure there are Justin.

The thing is when doing these comparisons is ............

If you got the values from both combos .........
its not too much trouble to load each set in the file
however
if you don't have the values

It can be a real hassle to arrive at the values from a pic someone posted up on the forum.

Some of the time, the pics do not give enough detail to get those numbers.

Some of the time, the pull was done on some off brand dyno.

Bottom Line Is ... You just can't use all the dyno results you see on these Stang sites as something prevents things from being fair or close to fair for a comparison.

The two combos really do show pretty typical results however.

The ability to see results side by side can be so revealing.

Notice how the GT40 combo is kinda soft on the low end
He should'a went with lt's

Notice how the GT40p combo is done at 5400
and
then falls off the chart like a rock
That is where more efficient Aluminum heads could help

anyway ... the curves are up for you guys to take a look at

Grady