Upgrading the NV5600 for faster shifting. - Competition Diesel.Com

bigbore050 · 09-19-2011, 03:23 PM

Well I broke my NV5600 again last week and I have been searching for ways to improve this transmisions shifting. I belive I broke the blockers again but wont know untill we get the tansmision apart.

I am teaming up with my rebuilder to redesign the 2-3, 3-4, and 5-6 blockers. We are hoping to greatly reduce the time between shifts and inprove the life of the blockers. I hope to start the machine work later this week and hope to have a transmision togeather for testing in a couple of weeks.

Would there still be interest in this transmision upgrade or is everyone giving in and switching to the G56s?

oldestof11 · 09-19-2011, 04:28 PM

Quote:

Originally Posted by bigbore050

Would there still be interest in this transmision upgrade or is everyone giving in and switching to the 48RE's?

Fixed that for you.

Subscribing...

OrangeNV · 09-19-2011, 04:33 PM

my opinion......

thats one huge waste of time and money

with these big HD trannies, its just never going to be as fast as an auto

JasonCzerak · 09-19-2011, 05:23 PM

Half the problem is having enough clutch to hold the big power and still shift.

Maybe the 500hp and less single disk trucks might see an advantage, not the 700+ double disk.

97rada · 09-19-2011, 05:27 PM

It might not be faster than an auto in the long run but i do think they can go faster then has been done in the past. I think if you get someone to build the right clutch and 5 speed combo, high tens would be possible.
Mind you that will be in a very light 4wd single cab with a 4 link. It would have to be all out to get there. Not sayin it will be cheap either.

97rada · 09-19-2011, 05:29 PM

Quote:

Originally Posted by JasonCzerak

Half the problem is having enough clutch to hold the big power and still shift.

Maybe the 500hp and less single disk trucks might see an advantage, not the 700+ double disk.

I see the clutch as one of the biggest issues also.

bigbore050 · 09-19-2011, 08:56 PM

Yes I know there will never be as fast as a auto but this is more for the die hards who dont want a auto. The cost will be small I hope. Mostly just moding whats there but 1 part will need to be built form scratch. I see the cost of tearing down the transmision for the new blockers to cost more than the blockers themselfs.

I agree that the clutch is a big factor also. I belive its just the extra mass that the blockers have to make up for. Agree or is there more to it than I see?

Im not a Trans guy. Im just the guy who can make all the new parts and always looking to make something better.

gmcz71502 · 09-19-2011, 10:04 PM

I would be interested depending on price...

OrangeNV · 09-20-2011, 06:07 AM

Quote:

Originally Posted by 97rada

It might not be faster than an auto in the long run but i do think they can go faster then has been done in the past. I think if you get someone to build the right clutch and 5 speed combo, high tens would be possible.
Mind you that will be in a very light 4wd single cab with a 4 link. It would have to be all out to get there. Not sayin it will be cheap either.

the power it takes to run 10's is gonna shatter a 5 or 6 speed......

JasonCzerak · 09-20-2011, 07:18 AM

Quote:

Originally Posted by OrangeNV

the power it takes to run 10's is gonna shatter a 5 or 6 speed......

If you catch it in a shift just right, yeah. But to just make 1200whp in a gear with no shock load, it'll be fine, it's been done before.

OrangeNV · 09-20-2011, 07:21 AM

And trying to drag race a 5 or 6 speed launching in 3rd gear and shifting twice isnt going to have any shockload?

1200hp boosted launch in 3rd gear 4wd = little pieces everywhere

JasonCzerak · 09-20-2011, 08:24 AM

Quote:

Originally Posted by OrangeNV

And trying to drag race a 5 or 6 speed launching in 3rd gear and shifting twice isnt going to have any shockload?

1200hp boosted launch in 3rd gear 4wd = little pieces everywhere

I'm in 6th with only 600hp years ago.

and that was starting in 2nd with a single disk.

I'm not saying there's no shock durning a drag race.. I'm saying the trans will live in 5th or 6th for a while with a crap load of power. It's been done.

4x4dually · 09-20-2011, 08:57 AM

I'd be interested in what you find, OP. I run a 5600 at around 450 hp. I tow really heavy when I do and would love to save a few RPM on the shifts. I'm hoping a new Hamilton cam soon will help, but at some point this tranny is going to need new synchros for 3rd. I've been double clutchin' it for almost three years now.

I think everyone realizes this big #600 POS will never shift like a race car......no news there...but if you find an improvement, be sure to post it up.

displacedtexan · 09-20-2011, 09:10 AM

Double clutching ain't bad. I'm used to it.

I have no need, but I'd think if you kept the cost down you'd sell a lot of em to guys like Jory.

4x4dually · 09-20-2011, 09:24 AM

Quote:

Originally Posted by displacedtexan

.....guys like Jory.

WTF is that supposed to mean?

displacedtexan · 09-20-2011, 09:45 AM

Quote:

Originally Posted by 4x4dually

WTF is that supposed to mean?

Ummm.....

Uhhhh.....

Welllllllll....

More than stock work trucks. If you want to race a truck tranny isn't the ideal tool. If you want something fun to drive that will get you through pastures and tow HEAVY a manual tranny Cummins is a great option.

4x4dually · 09-20-2011, 09:53 AM

Ok. Just looking for subliminal messages...

displacedtexan · 09-20-2011, 10:10 AM

Quote:

Originally Posted by 4x4dually

Ok. Just looking for subliminal messages...

Put your tinfoil hat back on rodent face!

4x4dually · 09-20-2011, 10:14 AM

Got any de-icer?

roachie · 09-20-2011, 10:16 AM

Are you talking about machining the dog rings to accept a large 4 lug type pattern like the things liberty does to older 4speeds or what?

09-19-2011, 03:23 PM	#1
bigbore050 Name: bigbore050 Title: The Original Rookie Status: Not Here Join Date: Jun 2010 Location: Washington, MO Member`s Gallery Posts: 147	Upgrading the NV5600 for faster shifting. Well I broke my NV5600 again last week and I have been searching for ways to improve this transmisions shifting. I belive I broke the blockers again but wont know untill we get the tansmision apart. I am teaming up with my rebuilder to redesign the 2-3, 3-4, and 5-6 blockers. We are hoping to greatly reduce the time between shifts and inprove the life of the blockers. I hope to start the machine work later this week and hope to have a transmision togeather for testing in a couple of weeks. Would there still be interest in this transmision upgrade or is everyone giving in and switching to the G56s? __________________ .

09-19-2011, 05:23 PM	#4
JasonCzerak Name: JasonCzerak Title: Too Much Time Status: Not Here Join Date: Aug 2006 Location: Bella Vista, AR Member`s Gallery Posts: 14,822	Half the problem is having enough clutch to hold the big power and still shift. Maybe the 500hp and less single disk trucks might see an advantage, not the 700+ double disk. __________________ 2014 Mercedes Benz E63s - 620awhp 2006 Corvette - 1000whp-ish

09-19-2011, 05:27 PM	#5
97rada Name: 97rada Title: Too Much Time Status: Not Here Join Date: Feb 2008 Member`s Gallery Posts: 5,410	It might not be faster than an auto in the long run but i do think they can go faster then has been done in the past. I think if you get someone to build the right clutch and 5 speed combo, high tens would be possible. Mind you that will be in a very light 4wd single cab with a 4 link. It would have to be all out to get there. Not sayin it will be cheap either. __________________ Austin tow truck- 14-3500 with tuning toy truck -94 rclb auto- 5.2x with a lot left. Shooting for 4s Any intelligent fool can make things bigger and more complex...it takes a touch of genius- and alot of courage to move in the opposite direction.

09-19-2011, 08:56 PM	#7
bigbore050 Name: bigbore050 Title: The Original Rookie Status: Not Here Join Date: Jun 2010 Location: Washington, MO Member`s Gallery Posts: 147	Yes I know there will never be as fast as a auto but this is more for the die hards who dont want a auto. The cost will be small I hope. Mostly just moding whats there but 1 part will need to be built form scratch. I see the cost of tearing down the transmision for the new blockers to cost more than the blockers themselfs. I agree that the clutch is a big factor also. I belive its just the extra mass that the blockers have to make up for. Agree or is there more to it than I see? Im not a Trans guy. Im just the guy who can make all the new parts and always looking to make something better. __________________ .

09-20-2011, 08:57 AM	#13
4x4dually Name: 4x4dually Title: Moderator Status: Not Here Join Date: Jan 2007 Location: Stillwater, OK Member`s Gallery Posts: 31,811	I'd be interested in what you find, OP. I run a 5600 at around 450 hp. I tow really heavy when I do and would love to save a few RPM on the shifts. I'm hoping a new Hamilton cam soon will help, but at some point this tranny is going to need new synchros for 3rd. I've been double clutchin' it for almost three years now. I think everyone realizes this big #600 POS will never shift like a race car......no news there...but if you find an improvement, be sure to post it up. __________________ Jory 2009 4x4 3500 MCLB "There are people far less intelligent than you making a living doing this stuff." - Jeff Mumau Last edited by 4x4dually; 09-20-2011 at 08:58 AM.

09-19-2011, 10:04 PM	#8
gmcz71502 Name: gmcz71502 Title: Too Much Time Status: Not Here Join Date: Sep 2008 Location: Ocala,Fl Member`s Gallery Posts: 363	I would be interested depending on price...

09-20-2011, 09:10 AM	#14
displacedtexan Name: displacedtexan Title: $500 PREMIUM MEMBER Status: Not Here Join Date: Feb 2008 Location: Mobilehoma Member`s Gallery Posts: 13,876	Double clutching ain't bad. I'm used to it. I have no need, but I'd think if you kept the cost down you'd sell a lot of em to guys like Jory. __________________ I talk loud.

09-20-2011, 09:53 AM	#17
4x4dually Name: 4x4dually Title: Moderator Status: Not Here Join Date: Jan 2007 Location: Stillwater, OK Member`s Gallery Posts: 31,811	Ok. Just looking for subliminal messages...

09-20-2011, 10:14 AM	#19
4x4dually Name: 4x4dually Title: Moderator Status: Not Here Join Date: Jan 2007 Location: Stillwater, OK Member`s Gallery Posts: 31,811	Got any de-icer?

09-20-2011, 10:16 AM	#20
roachie Name: roachie Title: Taco Master Status: Not Here Join Date: Nov 2007 Location: East TN Member`s Gallery Posts: 11,133	Are you talking about machining the dog rings to accept a large 4 lug type pattern like the things liberty does to older 4speeds or what? __________________ 99 F250____sold (to a ninja) 01 F250____Mexican F150 04 F350____Fat boy