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Dynoing My 8 Sec Built 428 Whipple Hellcat Charger

zhc

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#1
It may be a surprise to some folks, but I never had a chance to dyno the new build before I ran the 8.9's last week. After making several 8 second passes, I decided to change that fact and see how much power she's making.

The 8.90 tune as-is made an SAE corrected 1137 WHP and 1015 torque. After a couple tweaks, I ended the day with 1155 WHP and 1029 torque.

Dyno Vid:

Here are my dyno results comparing power made on my previous stock motor setup with a 2.50 + lower versus the built 427 Whipple I'm running now. ZHT Pullied Hellcat Blower vs 427 Whipple.png
 


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T_Trahan44

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#2
That's amazing, man. Congrats on the 8 second pass last night!
 


REDEYE

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#3
That’s insane, what fuel are you running?
 


motorhead

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#4
OP
Z

zhc

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Thread Starter #5
That’s insane, what fuel are you running?
E90 Ignite 114 Red for recent events, otherwise I run pump E85 for more casual activities with a larger upper pulley.
 


OP
Z

zhc

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Thread Starter #6
Lol, indeed. I have to get a couple baps on my triple pump return system as the pumps themselves are maxed.
 


SilverBillet

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#7
That is impressive. How many 8 second runs do you make before you have to tear it down and check things out?
 


cole3986

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#8
Congratulations, is this the race motor whipple build? As I recall 428, right?
 


cole3986

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Sorry, just looked at the bottom of the dyno graph, 427
 


Jack_Toepfer

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#10
Was the stock blower on the same 427 longblock?
Great work!
 


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Z

zhc

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Thread Starter #11
Was the stock blower on the same 427 longblock?
Great work!
No, my old build was a full bolt on stock sealed long block with stock unported IHI supercharger.
 


Marc W

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#12
Lol, indeed. I have to get a couple baps on my triple pump return system as the pumps themselves are maxed.
What size pumps on your Fore?. I have the 525s and we put a dual BAP on to “help” and it blew the pump fuses. Talked to Fore and they said don’t do that because that triple pump system is good for 1700 hp.
 


Marc W

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If you don’t mind..... 🤫. What pulley combination? Thanks....
 


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Z

zhc

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Thread Starter #14
What size pumps on your Fore?. I have the 525s and we put a dual BAP on to “help” and it blew the pump fuses. Talked to Fore and they said don’t do that because that triple pump system is good for 1700 hp.
i have 274 / 450’s and I’ve had a bit of luck boosting those in a returnless setup. I’m going to try the JMS P2020 FuelMax Voltage Booster which is fully adjustable.

If you don’t mind..... 🤫. What pulley combination? Thanks....
4.00 upper with a 10% lower
 


Hunter

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#15
It may be a surprise to some folks, but I never had a chance to dyno the new build before I ran the 8.9's last week. After making several 8 second passes, I decided to change that fact and see how much power she's making.

The 8.90 tune as-is made an SAE corrected 1137 WHP and 1015 torque. After a couple tweaks, I ended the day with 1155 WHP and 1029 torque.

Dyno Vid:

Here are my dyno results comparing power made on my previous stock motor setup with a 2.50 + lower versus the built 427 Whipple I'm running now. View attachment 4518
Loved it!
Amazing!
Never get tired of the sound!
 


tkracing1

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Your car is a monster... Congrats!
 


Linda's Hell Cat

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FlyByU

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Congrats again buddy, all the hard work paid off!!!
 


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Really awesome man. Gonna have to figure out how to be at an event your at so I can see that beast. And race it!

8’s is really fast. Just really fast. Must feel awesome
 


Primetime Hellcat 17

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#20
It may be a surprise to some folks, but I never had a chance to dyno the new build before I ran the 8.9's last week. After making several 8 second passes, I decided to change that fact and see how much power she's making.

The 8.90 tune as-is made an SAE corrected 1137 WHP and 1015 torque. After a couple tweaks, I ended the day with 1155 WHP and 1029 torque.

Dyno Vid:

Here are my dyno results comparing power made on my previous stock motor setup with a 2.50 + lower versus the built 427 Whipple I'm running now. View attachment 4518
ZHC did you upgrade your heads? If so who did the heads for you?
 




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