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8hp90 Trans #2987447
11/21/21 11:34 AM
11/21/21 11:34 AM
Joined: May 2008
Posts: 976
San Diego CA
6
65 Hemi Offline OP
super stock
65 Hemi  Offline OP
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Joined: May 2008
Posts: 976
San Diego CA
Anybody running a 8 speed trans in an older car? How much trimming of the tunnel/firewall did you do and what body car do you have? I am getting ready to to put one in a 65 Coronet behind 6.1 hemi with magnuson blower.


Doug

MOPAR or NO CAR!!!
1965 Dodge Coronet soon a 6.1 Hemi with a Magnson blower 810 hp on pump gas
1964 Dodge Polara 582" Indy alum Block 426-1RA heads,
1933 Plymouth PE all Steel, LT1 4L60E
1959 Plymouth Savoy 33,000 mile survivor
Old cars are never done. They are ongoing projects!
Re: 8hp90 Trans [Re: 65 Hemi] #2989811
11/28/21 11:44 AM
11/28/21 11:44 AM
Joined: Jan 2004
Posts: 4,864
North of Detroit
HemiDart68 Offline
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HemiDart68  Offline
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North of Detroit
I don't know the answer to your question. Was curious what you are going to use for a trans controller on that setup.


In God we trust, all others pay cash. www.lightnens.com (Home of the world's fastest Paint Job)
Re: 8hp90 Trans [Re: HemiDart68] #2989820
11/28/21 12:39 PM
11/28/21 12:39 PM
Joined: Feb 2003
Posts: 4,874
Houston, Texas
TheOtherDodge Offline
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TheOtherDodge  Offline
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Houston, Texas
I am researching this to run in place of the 4 speed in my 2000 Dakota. My understanding is there shouldn't have to be any trimming because it is about the same size as a 727.

Sound German makes a proven stand alone trans controller: https://www.soundgermanautomotive.com/

Re: 8hp90 Trans [Re: HemiDart68] #2989833
11/28/21 01:15 PM
11/28/21 01:15 PM
Joined: May 2008
Posts: 976
San Diego CA
6
65 Hemi Offline OP
super stock
65 Hemi  Offline OP
super stock
6

Joined: May 2008
Posts: 976
San Diego CA
German sound engineering has a great controller! A lot of great success. 8Hp trans used in a lot German cars The 8 speed technology came from when Chrysler merged with Mercedes.[b][/b]


Doug

MOPAR or NO CAR!!!
1965 Dodge Coronet soon a 6.1 Hemi with a Magnson blower 810 hp on pump gas
1964 Dodge Polara 582" Indy alum Block 426-1RA heads,
1933 Plymouth PE all Steel, LT1 4L60E
1959 Plymouth Savoy 33,000 mile survivor
Old cars are never done. They are ongoing projects!
Re: 8hp90 Trans [Re: 65 Hemi] #2990163
11/29/21 01:34 PM
11/29/21 01:34 PM
Joined: Apr 2003
Posts: 3,219
Tulsa, Oklahoma
340Cuda Offline
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340Cuda  Offline
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Tulsa, Oklahoma
Originally Posted by 65 Hemi
German sound engineering has a great controller! A lot of great success. 8Hp trans used in a lot German cars The 8 speed technology came from when Chrysler merged with Mercedes.[b][/b]
I have always thought the five speed automatic was the German transmission and the eight speed was developed by Chrysler. I thought the eight speed came out quite awhile after Chrysler split with Mercedes.

Am I wrong?

Re: 8hp90 Trans [Re: 340Cuda] #2990164
11/29/21 01:38 PM
11/29/21 01:38 PM
Joined: Nov 2006
Posts: 2,157
IL
furious70 Offline
top fuel
furious70  Offline
top fuel

Joined: Nov 2006
Posts: 2,157
IL
nag1 was benz
hp70/90 is ZF

Both are different sized than a 727. They do not fit without cutting/trimming, using the Holley mount kit, etc.

Russell at Sound German knows what's what. I talked for an hour with him once.


70 Sport Fury
68 Charger
69 Coronet
72 RR
Re: 8hp90 Trans [Re: 340Cuda] #2990193
11/29/21 03:11 PM
11/29/21 03:11 PM
Joined: Mar 2011
Posts: 2,461
Michigan
T
Transman Offline
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Transman  Offline
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T

Joined: Mar 2011
Posts: 2,461
Michigan
Originally Posted by 340Cuda
Originally Posted by 65 Hemi
German sound engineering has a great controller! A lot of great success. 8Hp trans used in a lot German cars The 8 speed technology came from when Chrysler merged with Mercedes.[b][/b]
I have always thought the five speed automatic was the German transmission and the eight speed was developed by Chrysler. I thought the eight speed came out quite awhile after Chrysler split with Mercedes.

Am I wrong?


The NAG was the MB unit.
ZF developed the 8 speed and Chrysler builds them under license in the Kokomo South Transmission Plant.
The 9 speed FWD trans was co-developed between FCA and ZF.

Re: 8hp90 Trans [Re: Transman] #2990410
11/30/21 10:04 AM
11/30/21 10:04 AM
Joined: Nov 2006
Posts: 2,157
IL
furious70 Offline
top fuel
furious70  Offline
top fuel

Joined: Nov 2006
Posts: 2,157
IL
also can be confusing - Russell's company

https://www.soundgermanautomotive.com/

does not mean 'German made'

up


70 Sport Fury
68 Charger
69 Coronet
72 RR






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