• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Dodge, Jeep and RAM Forum dedicated to FCA owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the SRT Forum today!


MY TRANSMISSION REPAIR 8hp90

OP
hellno

hellno

3000 Posts Club
8 Second Best E/T
HFCOTM
Member ID
#1308
Messages
3,326
Reactions
5,815
Likes
302
City
memphis
State
TN
Country
United States
Vehicle
2016 challenger hellcat
Thread Starter #181
Please don’t take that as a shot at you because that was only my opinion and I do agree that what ever is comfortable is best 👍
 


Hpindy

4000 Posts Club
Founding Member
9 Second Best E/T
HFCOTM
Member ID
#974
Messages
4,875
Reactions
11,023
Likes
302
City
Jackson's Point
State
Non-US
Country
Canada
Vehicle
2018 challenger hellcat
Hellno's car is so slow that a couple of clutch packs fell asleep . That's why they started to slip !
( that was a shot at you)

Sent from my BBF100-2 using Tapatalk
 


OP
hellno

hellno

3000 Posts Club
8 Second Best E/T
HFCOTM
Member ID
#1308
Messages
3,326
Reactions
5,815
Likes
302
City
memphis
State
TN
Country
United States
Vehicle
2016 challenger hellcat
Thread Starter #183
With my trans acting up I put it in manual mode my 9.47 pass and it coasted in 5th after the traps and other then stopping distance it was very nice
 


OP
hellno

hellno

3000 Posts Club
8 Second Best E/T
HFCOTM
Member ID
#1308
Messages
3,326
Reactions
5,815
Likes
302
City
memphis
State
TN
Country
United States
Vehicle
2016 challenger hellcat
Thread Starter #184
Hellno's car is so slow that a couple of clutch packs fell asleep . That's why they started to slip !
( that was a shot at you)

Sent from my BBF100-2 using Tapatalk
Damn @ hpindy you always give me shit 😂😂
 


TNREDEYE

500 Posts Club
Founding Member
9 Second Best E/T
Member ID
#1211
Messages
988
Reactions
2,462
Likes
132
City
Shelbyville
State
TN
Country
United States
Vehicle
2021 Super Stock
Please don’t take that as a shot at you because that was only my opinion and I do agree that what ever is comfortable is best 👍
Not at all buddy. I'm just passing along info that may be considered useful to some.
 


Marc W

3000 Posts Club
Founding Member
U.S. Navy Veteran
Firefighter
8 Second Best E/T
HFCOTM
Member ID
#993
Messages
3,421
Reactions
10,964
Likes
302
City
St. George
State
UT
Country
United States
Vehicle
2016 Dodge Challenger Hellcat
HFCOTM
View Images
One thing to keep in mind is that many of our individual goals are different. What might be a good plan for one does not work for another. A good comparison would be WhipCat’s car vs mine. Both big hp motors, but that’s where the similarities end. While he will go to the drag strip on occasion and wants to run good there... his is not specifically a drag car. It needs to be a much more versatile street car so there are compromises to accomplish that. Mine..... is planned to be a drag car that can occasionally be driven on city surface streets with one passenger and all the interior amenities. But.... it is primarily a quarter mile drag car. What is important to me when planning out my build has been reliability at the track and being able to go rounds. I have invested in a truck and trailer in order to be able to get the car to events around the country. That kind of travel is expensive. If you haven’t done it... you have no idea! The cost of fuel and other travel and race related expenses are significant so when building one of these things to do that, you are confronted with the realities of breaking parts and having spent that travel related money for nothing when you do. Because of that..... I have “invested” in some costly parts that are what some would consider overkill. Perspective....... I once traveled from Calif to Gainesville, Florida to race and a part failure kept me from qualifying for the field. Instead of racing on Sunday, I drove all the way back to Calif. That kind of experience leaves an impression. And for me..... that’s where decisions concerning the trans comes in. This thread is all about the realities of using the stock trans in 1000 hp cars at the track. To me it’s incredible that they can do it at all. Damn good stock piece if you ask me. But..... it’s apparent that there is a limit. Whether it’s a limit on a certain hp number or number of times you can do it doesn’t matter...... It’s there. There is also the tuning question. It is a serious management challenge not only to get it to live but also get down the track putting all that power to use. That’s the main reason that so many high hp cars don’t produce the performance results on the track that might be expected. Rather than deal with that, I made the decision to not deal with that. I have a $10k+ T400 waiting to go in in two weeks. There is no tuning (money saved). Shift management is my right hand on the shift lever. There will be no breaking or rebuilding expenses. It may cost as much as three A8’s but I’m taking the ‘you can pay for it now, or pay for it (along with the associated headaches) later approach. Hopefully.... competition in the hp90 rebuilding industry will lower the cost of doing that. In the mean time.... if your plans include going to the track more than once in the future...... WhipCat’s plan of having a spare handy isn’t a bad idea if you can find one at a good price. Which of coarse leads me to say..... I have one for sale 😂
 


Last edited:

motorhead

1000 Posts Club
Founding Member
Member ID
#1061
Messages
1,487
Reactions
2,487
Likes
162
City
Ottawa
State
Non-US
Country
Canada
Vehicle
2019 Challenger HC Widebody
I willingly beta test. My builder and the tuners I’ve used have never lied to me and I certainly am not naive to think that everything is supposed to be perfect. Would I want a perfect trans tune and everything to be super excellent every time I fire up the car? Sure. But let’s get real. The amount of variables at play on a high level build is crazy.
Don’t you watch these build videos of some fast cars and see what these guys go through to make them work successfully? Lots of blood and sweat to make these things work.

I would love for their to be a one and done solution for 1000+ HP hemi builds, but it’s gonna take more time. Right now swapping a trans every 2 years for what I’m doing is not a problem. Not trying to blow off the cost but $4000 is nothing for keeping my car running as healthy as it now. I’ve got a shit ton of money in my car, and considering the abuse I put on it, it’s running good!

im all for what you are saying in collaborating data so we can get these things perfect. But it’s gonna take more R&D.
Again, this is where you have to decide race car or street car. Race cars get race car parts, a bunch of broken ZF8s transmissions means that there are some slow learners. The aftermarket hasn't caught up yet because the demand doesn't exist yet to infuse real resources into R&D into bullet proofing the ZF8.

I still maintain the position of taking the power back and getting the tune info compiled. Otherwise you are at the mercy of an inexperienced tuner - with or without their full disclosure.
 


Hpindy

4000 Posts Club
Founding Member
9 Second Best E/T
HFCOTM
Member ID
#974
Messages
4,875
Reactions
11,023
Likes
302
City
Jackson's Point
State
Non-US
Country
Canada
Vehicle
2018 challenger hellcat
Again, this is where you have to decide race car or street car. Race cars get race car parts, a bunch of broken ZF8s transmissions means that there are some slow learners. The aftermarket hasn't caught up yet because the demand doesn't exist yet to infuse real resources into R&D into bullet proofing the ZF8.

I still maintain the position of taking the power back and getting the tune info compiled. Otherwise you are at the mercy of an inexperienced tuner - with or without their full disclosure.
This is what I was trying to say earlier ( before I had my snickers) that we need to get the A8 up to par with parts and aftermarket goodies to make it bulletproof.

Sent from my BBF100-2 using Tapatalk
 


OP
hellno

hellno

3000 Posts Club
8 Second Best E/T
HFCOTM
Member ID
#1308
Messages
3,326
Reactions
5,815
Likes
302
City
memphis
State
TN
Country
United States
Vehicle
2016 challenger hellcat
Thread Starter #189
I checked and used units run 2500-3000 I may consider getting an extra unit and having it built and ready to exchange just for time and convenience, I’m hoping my core guy will stop in one day and I can get a bargain on one
 


OP
hellno

hellno

3000 Posts Club
8 Second Best E/T
HFCOTM
Member ID
#1308
Messages
3,326
Reactions
5,815
Likes
302
City
memphis
State
TN
Country
United States
Vehicle
2016 challenger hellcat
Thread Starter #190
What is the fastest hellcat meaning modded but no nitrous factory super charger and drivetrains pulleys and fuel can be any set up driveshaft mod is ok 3.09 or 2.62 A8 no demon supercharger all stock motor internals no cam upgrades , I’m just curious
 


Hpindy

4000 Posts Club
Founding Member
9 Second Best E/T
HFCOTM
Member ID
#974
Messages
4,875
Reactions
11,023
Likes
302
City
Jackson's Point
State
Non-US
Country
Canada
Vehicle
2018 challenger hellcat
What is the fastest hellcat meaning modded but no nitrous factory super charger and drivetrains pulleys and fuel can be any set up driveshaft mod is ok 3.09 or 2.62 A8 no demon supercharger all stock motor internals no cam upgrades , I’m just curious
Just had to throw that in there eh.. " no demon supercharger "

Sent from my BBF100-2 using Tapatalk
 


OP
hellno

hellno

3000 Posts Club
8 Second Best E/T
HFCOTM
Member ID
#1308
Messages
3,326
Reactions
5,815
Likes
302
City
memphis
State
TN
Country
United States
Vehicle
2016 challenger hellcat
Thread Starter #192
Just had to throw that in there eh.. " no demon supercharger "

Sent from my BBF100-2 using Tapatalk
Had to get back at you on that one 😂😂but seriously I am curious
 


OP
hellno

hellno

3000 Posts Club
8 Second Best E/T
HFCOTM
Member ID
#1308
Messages
3,326
Reactions
5,815
Likes
302
City
memphis
State
TN
Country
United States
Vehicle
2016 challenger hellcat
Thread Starter #193
Since no one will start a hellcat 1/4 mile time list and I’m not edumacated enough to start one lol
 


Hpindy

4000 Posts Club
Founding Member
9 Second Best E/T
HFCOTM
Member ID
#974
Messages
4,875
Reactions
11,023
Likes
302
City
Jackson's Point
State
Non-US
Country
Canada
Vehicle
2018 challenger hellcat
Had to get back at you on that one but seriously I am curious
Haha

Sent from my BBF100-2 using Tapatalk
 


Marc W

3000 Posts Club
Founding Member
U.S. Navy Veteran
Firefighter
8 Second Best E/T
HFCOTM
Member ID
#993
Messages
3,421
Reactions
10,964
Likes
302
City
St. George
State
UT
Country
United States
Vehicle
2016 Dodge Challenger Hellcat
HFCOTM
View Images
What is the fastest hellcat meaning modded but no nitrous factory super charger and drivetrains pulleys and fuel can be any set up driveshaft mod is ok 3.09 or 2.62 A8 no demon supercharger all stock motor internals no cam upgrades , I’m just curious
ZHC ran 8.90 at 157 mph with his 426 Whipple/A8 Charger just recently. He was running 2.62 gearing.
 


OP
hellno

hellno

3000 Posts Club
8 Second Best E/T
HFCOTM
Member ID
#1308
Messages
3,326
Reactions
5,815
Likes
302
City
memphis
State
TN
Country
United States
Vehicle
2016 challenger hellcat
Thread Starter #196
I would like to pick mike@ostdyno for information maybe if I see him at the track again I can pay him to sit down and discuss what he has done on his hellcat
 


OP
hellno

hellno

3000 Posts Club
8 Second Best E/T
HFCOTM
Member ID
#1308
Messages
3,326
Reactions
5,815
Likes
302
City
memphis
State
TN
Country
United States
Vehicle
2016 challenger hellcat
Thread Starter #197
ZHC ran 8.90 at 157 mph with his 426 Whipple/A8 Charger just recently. He was running 2.62 gearing.
But that’s with a different super charger
 


OP
hellno

hellno

3000 Posts Club
8 Second Best E/T
HFCOTM
Member ID
#1308
Messages
3,326
Reactions
5,815
Likes
302
City
memphis
State
TN
Country
United States
Vehicle
2016 challenger hellcat
Thread Starter #198
I saw a hellcat at beech bend with a whipple go 9.2 but I also know the motor on it was replaced as well
 


Marc W

3000 Posts Club
Founding Member
U.S. Navy Veteran
Firefighter
8 Second Best E/T
HFCOTM
Member ID
#993
Messages
3,421
Reactions
10,964
Likes
302
City
St. George
State
UT
Country
United States
Vehicle
2016 Dodge Challenger Hellcat
HFCOTM
View Images
But that’s with a different super charger
Yes. Speed reading sometimes doesn’t produce good comprehension 😂 . I thought you were just looking for blower only results. I know some 2.7 blower car are pushing 9 flat now but I don’t know what the 2.4 record is.
 


moparjim

1000 Posts Club
Founding Member
10 Second Best E/T
HFCOTM
Member ID
#1084
Messages
1,748
Reactions
4,352
Likes
212
City
Vaudreuil
State
Non-US
Country
Canada
Vehicle
2016 Challenger Hellcat
That's a good thought , shifting it to manual & down shifting at your own rate so not to be to harsh on it.
I also will sometimes just switch it to Eco mode a little bit past the traps where it will down shift easy.
I pull the shifter over to the left as I go through the traps. Then I can downshift myself at a reasonable speed or let it downshift itself.
 




Top