Which kit really makes more HP ??

[S592R]

well Ripper,

you are obviously more competent than I am on this. My previous biturbo cars were not really smooth trackable. Haven't driven a GT TT yet, but from what i know so far, also there physics apply.. lag.. equilibrium, pressure...more pressure..take some gas back or fly off.. would be interesting on a twisty track to see the big charger vs the TT run against the clock !

There is a difference driving a turbo car.... that is true but with any Forced Induction engine .. you have to keep the revs up to have the forced part of that. Depending on the tune ... a turbo engine would probably be faster for a longer period of time due to the turbo's ability to keep cool longer. or rather the charge air cool longer. When you add the reduction of parasitic drag then you have a few other points.

Now with that all said it comes down to the guy in the drivers seat and how to adequately apply the power to the wheels and then in turn put it appropriately down at the right time on the track. Anyone can drift a car .. however, clean is fast. Having too much power at the wrong time is a very bad thing .... having too much power at the right time is never too much power.

The best way to improve the GT's time around a twisty track is to improve its handling capabilities with an adjustable suspension. Once you get north of 600 hp on the ground it comes down to handling it and properly using it.

My humble two cents worth.

Steve

 

[Ripper 02]

Once you get north of 600 hp on the ground it comes down to handling it and properly using it.



Steve

Steve,

That pretty much sums it up......

Great Post !!

 

[barondw]

One of the problems is that some post SAE adjusted smoothed dyno numbers and others post unrealistic unadjusted numbers just to show a big number. Thus it is not a comparison of golden delicious apples to golden delicious apples.

I agree with most who responded that the number with a pulley, tune., etc. is about 610-620 max SAE adjusted/smoothed rwhp. At the end of the day 600 rwhp is very difficult to get to the ground in street driving.

Dave

 

[Heffner Performance]

Dave,

That is a very good point. I just examined a few runs from one of our pulley / tune cars which made 622 rwhp SAE corrected in 70 degree weather. The same run uncorrected goes to 656 rwhp. Obviously in colder weather there will be a more significant difference between corrected and uncorrected. I have always posted the SAE corrected numbers because they are the most comparable from one dyno to another. That and I don't want to mislead anyone.

 

[GFORCE]

Well i have a whipple.

Done by the best bob ida,plus everything else.its north of 700 rwh.I have to run lucus booster.Bob has my other gt now,and doing some diffrent tricks.
Mine was the first whipple hes done on a gt.him and dustin worked to get right he said he is really proud of the way it worked out.So am i.There's know
doubt hes been doing ford racing motors for a long time.

 

[B O N Y]

1. The Heffner Tune and Pulley out of the box proved to be a turn key pacage, car ran perfect from day one, no issues, I was happy.

.2 The Whipple installed by Dustin and crew with their tune is almost as good as sex with your wife for the first time, car runs perfect, I am happy.


That being said, we don't drive or race dynos. It is a great benchmark that
shows a before and after picture. I know of two great FE engine builders, one has the most optimistic dyno in the world, everyone laughs at his numbers, but bottom line, either one builds a strong motor, thats what matters to me.

I would recommend Heffner is a NY second, same deal for Whipple.



Now about your old lady:lol :rofl :lol

 

[kosupply]

my dyno sheets...

Ok, I have been told and also read that most hp kits that include (exhaust/pulley/tune/ect) make about 600-620 rwhp. Today I was told buy Ford racing department that if you use Fords kit >
(headers/exhaust/15lb pulley/tune/ect) from Ford it will make 650-670 rwhp
is there any truth to this , does anyone have this setup and why that much differance, also I think the cost is about 40% more, if so, is it worth it ?

Thanks

IDA Exhaust, Hennessey 16psi pulley and tune

 

[TEXAS GT]

IDA Exhaust, Hennessey 16psi pulley and tune

Who actually manufactures these pulleys? If I remember right Hennessey told me he gets his pulleys from Heffner who gets them from...?

No offense intended to these professionals but I just wondered if there was one source or everybody was machining their own.