Diff Splines.

[MyM8V8]

Being lazy here. Anyone know how many splines there are in our diffs?
And also the diameter of the ring gear.

I'm buying a True Trac and assume we have the same as the GTO's at 28 splines.

Anyone else interested in a true trac, let me know as we might be able to reduce/share shipping costs. These diffs are far superior to what we are using and don't have the oil/modifier problems the Holden diffs have, and are good up to about 5-550 HP

Currently priced in the states at around $375-$534. That would be plus shipping, plus duty and plus Vat.

Edited by MyM8V8 on Thursday 2nd October 00:09

Edited by MyM8V8 on Thursday 2nd October 00:31

[MyM8V8]

http://www.hinsonsupercars.com/Pics/DetriotTrueTra...

[MyM8V8]

MyM8V8 said:

http://www.hinsonsupercars.com/Pics/DetriotTrueTra...

Harrop do a version under license with Eaton internals, which is a billet unit and they claim it is stronger and will take more HP (600). The Detroit is a forging which should be good enough for us IMHO. Harrop one will come in at around £600 ish, and I'm not prepared to pay extra for a badge and someone elses royalty fees.

Edited by MyM8V8 on Thursday 2nd October 10:56

[crisisjez]

MyM8V8 said:

MyM8V8 said:

www.hinsonsupercars.com/Pics/DetriotTrueTracExploded.jpg

Harrop do a version under license with Eaton internals, which is a billet unit and they claim it is stronger and will take more HP (600). The Detroit is a forging which should be good enough for us IMHO. Harrop one will come in at around £600 ish, and I'm not prepared to pay extra for a badge and someone elses royalty fees.

Edited by MyM8V8 on Thursday 2nd October 10:56

All look like a good alternative, but what about a high horsepower alternative? (Circa 700FW)

[S600VXR]

crisisjez said:

MyM8V8 said:

MyM8V8 said:

http://www.hinsonsupercars.com/Pics/DetriotTrueTra...

Harrop do a version under license with Eaton internals, which is a billet unit and they claim it is stronger and will take more HP (600). The Detroit is a forging which should be good enough for us IMHO. Harrop one will come in at around £600 ish, and I'm not prepared to pay extra for a badge and someone elses royalty fees.

Edited by MyM8V8 on Thursday 2nd October 10:56

All look like a good alternative, but what about a high horsepower alternative? (Circa 700FW)

Yr future expectations have dropped a little aint they..!

[MyM8V8]

S600VXR said:

crisisjez said:

MyM8V8 said:

MyM8V8 said:

http://www.hinsonsupercars.com/Pics/DetriotTrueTra...

Harrop do a version under license with Eaton internals, which is a billet unit and they claim it is stronger and will take more HP (600). The Detroit is a forging which should be good enough for us IMHO. Harrop one will come in at around £600 ish, and I'm not prepared to pay extra for a badge and someone elses royalty fees.

Edited by MyM8V8 on Thursday 2nd October 10:56

All look like a good alternative, but what about a high horsepower alternative? (Circa 700FW)

Yr future expectations have dropped a little aint they..!

I think you will have much more than a diff to worry about. For the strip anyway.

Edited by MyM8V8 on Thursday 2nd October 13:00

[crisisjez]

MyM8V8 said:

crisisjez said:

MyM8V8 said:

MyM8V8 said:

www.hinsonsupercars.com/Pics/DetriotTrueTracExploded.jpg

Harrop do a version under license with Eaton internals, which is a billet unit and they claim it is stronger and will take more HP (600). The Detroit is a forging which should be good enough for us IMHO. Harrop one will come in at around £600 ish, and I'm not prepared to pay extra for a badge and someone elses royalty fees.

Edited by MyM8V8 on Thursday 2nd October 10:56

All look like a good alternative, but what about a high horsepower alternative? (Circa 700FW)

I think you will have much more than a diff to worry about. For the strip anyway.

Edited by MyM8V8 on Thursday 2nd October 13:00

Starting at the back Gareth....

Drag racing is for fun like I said, its Vmax I`m interested in.

I am however looking at Tubbing and flaring for a larger contact patch, however that only causes more problems as strength is even more an issue.

Not going to decide on a package till I`m happy I can use it.

This may take some time.

[crisisjez]

S600VXR said:

Yr future expectations have dropped a little aint they..!

Penny`s

[S600VXR]

Yes we know you have to many and enjoy your job to much for it!!

[ringram]

700fw Thats 454 NA territory

Check out Harrop's 9" and 12 bolt diff's for the commodore. That should handle things no problem.
Throw in a built trans with the Viper splines and twin disk clutch and you should have a setup to handle that no problem.

http://www.harrop.com.au/root_folder/driveline_com...

[S600VXR]

ringram said:

700fw Thats 454 NA territory

Check out Harrop's 9" and 12 bolt diff's for the commodore. That should handle things no problem.
Throw in a built trans with the Viper splines and twin disk clutch and you should have a setup to handle that no problem.

http://www.harrop.com.au/root_folder/driveline_com...

Do you ever work or do you spend your life absorbing information about Holden cars and american engines for regurgitation here!!!

[ringram]

Its a question of priority mate. In life certain information is of primary importance.

Why arnt you at work yourself!

My mobile phone has internet so I sadly use it to keep in touch. Plus Im in IT and need to make sure various corporates' internet access is working properly to ensure productivity levels are maintained

[MyM8V8]

crisisjez said:

MyM8V8 said:

crisisjez said:

MyM8V8 said:

MyM8V8 said:

http://www.hinsonsupercars.com/Pics/DetriotTrueTra...

Harrop do a version under license with Eaton internals, which is a billet unit and they claim it is stronger and will take more HP (600). The Detroit is a forging which should be good enough for us IMHO. Harrop one will come in at around £600 ish, and I'm not prepared to pay extra for a badge and someone elses royalty fees.

Edited by MyM8V8 on Thursday 2nd October 10:56

All look like a good alternative, but what about a high horsepower alternative? (Circa 700FW)

I think you will have much more than a diff to worry about. For the strip anyway.

Edited by MyM8V8 on Thursday 2nd October 13:00

Starting at the back Gareth....

Drag racing is for fun like I said, its Vmax I`m interested in.

I am however looking at Tubbing and flaring for a larger contact patch, however that only causes more problems as strength is even more an issue.

Not going to decide on a package till I`m happy I can use it.

This may take some time.

I agree. Wise words. But spend it quick, it's no good in a bank at the mo'!!!

Edited by MyM8V8 on Friday 3rd October 11:12

[MyM8V8]

Anyone have a ring gear they can measure diameter for me???

[crisisjez]

ringram said:

700fw Thats 454 NA territory

Check out Harrop's 9" and 12 bolt diff's for the commodore. That should handle things no problem.
Throw in a built trans with the Viper splines and twin disk clutch and you should have a setup to handle that no problem.

www.harrop.com.au/root_folder/driveline_components/12_bolt_irs_diff.html

Hmmm interesting...they use Eaton True Track internals....Gareth!!!!!!!

[MyM8V8]

crisisjez said:

ringram said:

700fw Thats 454 NA territory

Check out Harrop's 9" and 12 bolt diff's for the commodore. That should handle things no problem.
Throw in a built trans with the Viper splines and twin disk clutch and you should have a setup to handle that no problem.

http://www.harrop.com.au/root_folder/driveline_com...

Hmmm interesting...they use Eaton True Track internals....Gareth!!!!!!!

Jez, The diff is basically a Detroit True Trac. Eaton own the design. Harrop have some sort of agreement with Eaton and build theirs under license as far as I know. They do claim theirs is a much stronger unit because they have a billet body (Eaton gears as you said)as opposed to the Detroit which is a forging (same gears). Harrop also claim that theirs is superior because it is hand made, although I can't see the Detroit one being built by robots?

[MyM8V8]

Forget it. The True Tracs apparenly have a manufacturing problem and have withdrawn stock.

Sounds highly suspicious to me and could be something to do with the Harrop boys.

[crisisjez]

So its not only brakes but diff`s that have been `cornered` market wise.