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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
 
Last edited:

T_Trahan44

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

REDEYE

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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.
 
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Z

zhc

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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?
 

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

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

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

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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.
 

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

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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
 

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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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