West TX GT
Well-Known Member
I wonder when stage 2 while finally drop and how much it will be. Will fueling upgrades be involved?
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Thanks . I am considering a kit as a replacement for the 8 rib KB kit in one of my 15’s.Yeah that 15899 looks like it's made more for swap cars where vehicle specific parts aren't needed. IDK the details on it, I myself got the 158320, which the stage 1 no tune version. So it came with everything minus injectors and a tune.
I’d volunteer for that. I’ve got a chunk of 7075 sitting around and a mill begging to be used.So they’ll be using CNC machined billet housings in future?
The Edelbrock has more boost than 16psi in that graph you shared. You know it had 16psi because the article stated it has 16psi? It flat lines significantly early in the pull, why? It's out of airflow capacity on the inlet side. Put a small TB on ours and pulley down to get it to same boost, guess what? Torque goes up and HP flat lines once the airflow stalls. Maybe we should come out with a 103mm TB so we can make extra torque and flat line that horsepower....Thought I might just add this to the conversation. Feel free to discuss/dispute any of my findings. I’m always happy to learn something new.
Whipple Gen 5 with all the gear at 16psi vs Edelbrock E Force modular inlet/103mm TB at 16psi.
The Whipple car is manual, the Edelbrock is auto. You can read into that whatever you want.
Yes, different dynos vary on different days etc. We all know this and that’s why we don’t race on dynos.
The numbers I’ve provided aren’t intended to be “perfect” but they do provide some food for thought and hopefully some discussion.
3k - *read below* Edelbrock 480hp (20-40% gain, read below)
4K - Whipple 525hp Edelbrock 625hp 19% gain
5k - Whipple 710hp. Edelbrock 810hp 14% gain
6k - Whipple 840hp Edelbrock 935 Hp 11% gain
7k - Whipple 920hp. Edelbrock 950 Hp 3% gain
7.5k - Whipple 960hp. Edelbrock 961 Hp
8k - Whipple 978hp. Edelbrock ????
* I predicted the Whipple’s output based on the shape of the torque curve which would suggest approximately 600ft/lb at 3k (342hp), giving a 40% gain to the Edelbrock.
Even if we were to assume that the Whipple was making 700ft/lb at 3k (it isn’t), this would give 400hp, a 20% gain to the Edelbrock. The truth of it is somewhere between those numbers.
Now, even if we were to assume that the dyno was favouring the Edelbrock by 10% (I cant comment on that), It’s still abundantly evident that the Edelbrock is still in front all the way to 5k and basically level at the 6k mark.
@Brent Davis I borrowed your dyno sheet, hope you don’t mind.
Shots fired! LOLThe Edelbrock has more boost than 16psi in that graph you shared. You know it had 16psi because the article stated it has 16psi? It flat lines significantly early in the pull, why? It's out of airflow capacity on the inlet side. Put a small TB on ours and pulley down to get it to same boost, guess what? Torque goes up and HP flat lines once the airflow stalls. Maybe we should come out with a 103mm TB so we can make extra torque and flat line that horsepower....
Wouldn't a 103mm just keep your same low end torque you make now and just flatline it up top, meaning, you wont see 869wtrq like the Edelbrock does by swapping your 132 for a 103, you'd see the same torque you do with just less power up top due to pressure drop across the TB? The smaller TB won't add torque or power down low, it will just change the angle of your torque curve.The Edelbrock has more boost than 16psi in that graph you shared. You know it had 16psi because the article stated it has 16psi? It flat lines significantly early in the pull, why? It's out of airflow capacity on the inlet side. Put a small TB on ours and pulley down to get it to same boost, guess what? Torque goes up and HP flat lines once the airflow stalls. Maybe we should come out with a 103mm TB so we can make extra torque and flat line that horsepower....
Join the queue!,I wonder when stage 2 while finally drop and how much it will be. Will fueling upgrades be involved?
We only have the word of those who did the testing.The Edelbrock has more boost than 16psi in that graph you shared. You know it had 16psi because the article stated it has 16psi? It flat lines significantly early in the pull, why? It's out of airflow capacity on the inlet side. Put a small TB on ours and pulley down to get it to same boost, guess what? Torque goes up and HP flat lines once the airflow stalls. Maybe we should come out with a 103mm TB so we can make extra torque and flat line that horsepower....
I’m very keen to see how it performs at high rpm with a boost level that is consistent with 93 octane fuel. Really though, even if it fell flat on its face at 7500, would it even matter?Wouldn't a 103mm just keep your same low end torque you make now and just flatline it up top, meaning, you wont see 869wtrq like the Edelbrock does by swapping your 132 for a 103, you'd see the same torque you do with just less power up top due to pressure drop across the TB? The smaller TB won't add torque or power down low, it will just change the angle of your torque curve.
The Edelbrock isn't changing the angle of the torque curve to make more torque, it actually makes more torque down low and then drops to about 720wtrq by 7500rpm due to what we are all assuming is pressure drop across the TB. How ever this just proves the r2650 rotor pack is indeed a monster, hell the torque it makes at 7500rpm is still on par with the torque the whipple is making at that same RPM even though it has a 132mm TB on it, how ever the 2650 it has the benefit of making a lot more torque down low end before leveling out with your kit up top.
I also can't speak to the boost on that car, it's not mine, how ever I do plan to do the stage 2 ugrade when it becomes available and hitting the dyno again to see how it does, will prob still rev it out to 8200rpm just to see the shape of the curve when revved out that high.
The stage 1 made 10pi on my car with the included 3.25" pulley, I do plan to go back with the same exact pulley, 93 octane, and the 103mm TB and stage 2 intake to see how much we make. After that I wont be able to do as straight forward comparison bc I will be installing a set of LTH long tubes, fuel system, and going to e85. Will prob pulley down or do their 8 rib set up with OD lower, the goal is 900+whp, ideally 950-1000 just like their local car...I doubt I'll daily it on that pulley combo, but it's what I'll use when racing.I’m very keen to see how it performs at high rpm with a boost level that is consistent with 93 octane fuel. Really though, even if it fell flat on its face at 7500, would it even matter?
Excellent!The stage 1 made 10pi on my car with the included 3.25" pulley, I do plan to go back with the same exact pulley, 93 octane, and the 103mm TB and stage 2 intake to see how much we make. After that I wont be able to do as straight forward comparison bc I will be installing a set of LTH long tubes, fuel system, and going to e85. Will prob pulley down or do their 8 rib set up with OD lower, the goal is 900+whp, ideally 950-1000 just like their local car...I doubt I'll daily it on that pulley combo, but it's what I'll use when racing.
Seems beefcake, lethal and Evolution r doing the best dealsHi just wondering who has the best prices on the Edelbrock 15899 today looking on picking one up ?