yank's 4l80e conversion
Melting Slicks
Joined: Sep 2002
Posts: 3,064
Likes: 95
From: MI
Originally Posted by STEALTH 99 C5
Alan , No disrespect to your ride but I'm not impressed by the t-400 yet , out of those 40 runs the majority are between 9.5 to 10.1 , my RPM 4L60E held up to over 35 runs between 9.8 and 9.6 and after approximately 10 runs below 9.5 it still didn't fail , I sent it back to him over the winter for a refresh for insurance .
I know you've been pacing yourself and getting comfortable with the speed and you've come a long way
but as I've said in the past , I want to see a C5 with a T-400 make 40 passes in the solid low nine/high eight zone . It's really a matter of personal preference , and of course money , your happy with yours , good for you . Now throw that 10 rib belt on it and crank up the boost and test that trans . 
I know you've been pacing yourself and getting comfortable with the speed and you've come a long way
but as I've said in the past , I want to see a C5 with a T-400 make 40 passes in the solid low nine/high eight zone . It's really a matter of personal preference , and of course money , your happy with yours , good for you . Now throw that 10 rib belt on it and crank up the boost and test that trans . 
Intermediate
Joined: Jul 2005
Posts: 30
Likes: 0
What about a 3 or 4 person group buy to bring the cost down
around 3,000 less per tranny. Yank would you be willing to do that?
Although now it seems that this tread has started to turn on you
a little.
Would any of you guys be interested in something like this.
around 3,000 less per tranny. Yank would you be willing to do that?
Although now it seems that this tread has started to turn on you
a little.
Would any of you guys be interested in something like this.
Thread Starter
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
Originally Posted by Earl H
If the RPM tranny has held up to that much abuse (35 or so runs in the mid to high 9's) and only had to do an annual rebuild, is there a reall advantage to this option (assuming that there are no issues and it does work problem-free as "assumed"), considering you will probably have to rebuild just as frequently. Sounds like there is no real upside considering the $15K insalled price and cutting up the car. I am running an RPM tranny as well and am especially interested to hear.
i dont care who builds these 4l60e the problem lies in the 3 4 clutch pack/band design and the long passage way for the 3 4 selniod. if my trans only needed to be rebuilt over the winter then i'd be ok w/that but....
my first one didnt last long as i ran wrong edit then the second one went with a WOT top end run...186mph. the third one didnt last long either...3 4 pack and band. maybe i need to send it to rpm instead...
does rpm run 9 plates and what are the tolerences? we tried to run nine plates but that means that you gotta run thin metals...that then can cause coning.
Thread Starter
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
Originally Posted by Z06GMAN
I don't know...."Hacking and Car" in the same sentence does not sound good to me
who says its gotta be hacked?
the earlier version needed more work to fit
Safety Car
Joined: Sep 2002
Posts: 3,948
Likes: 0
From: Aurora IL
St. Jude Donor '06
Originally Posted by Earl H
Read: I have the means and the need for your product, but would not risk $15K and cutting up my car for an "unproven" (on my car application and for my intended use) system. Hopefully you will take this constructively from a current and potential customer. Put the system on the road for some long-term durability testing (maybe even Stealth's car for a racing season) and prove your design and the materials and find out what COULD go wrong. Just my .02 and its probably worth just that.
Safety Car
Joined: Apr 2004
Posts: 4,097
Likes: 10
From: East Coast
Originally Posted by Earl H
If the RPM tranny has held up to that much abuse (35 or so runs in the mid to high 9's) and only had to do an annual rebuild, is there a reall advantage to this option (assuming that there are no issues and it does work problem-free as "assumed"), considering you will probably have to rebuild just as frequently. Sounds like there is no real upside considering the $15K insalled price and cutting up the car. I am running an RPM tranny as well and am especially interested to hear.
that depends on your power level and driving style . I sent mine back over the winter months to be freshened because the car was going to be down for awhile getting a roll cage and other safety equipment installed , sometimes I'll make 35-40 runs within one month , so the amount of times it has to be freshened during the year varies , if you make 25 runs per year , then you should only need an annual freshening , or maybe you won't need it freshened at all , everyone's driving style is different , I could go out and ruin a trans in one day at the power level I'm at if I constantly beat on it over and over , it wouldn't matter who built it , it's hard , but to help make driveline parts last in a street driven big HP C5 , you have to have a lot of self control , and know how to treat the car responsibly .
Le Mans Master
Joined: Aug 2003
Posts: 7,188
Likes: 1
From: New Blue 9.80 @ 142MPH stock motor
St. Jude Donor '03-'06-'07-'08
Originally Posted by STEALTH 99 C5
I never said it only has to be freshened annually , that depends on your power level and driving style . I sent mine back over the winter months to be freshened because the car was going to be down for awhile getting a roll cage and other safety equipment installed , sometimes I'll make 35-40 runs within one month , so the amount of times it has to be freshened during the year varies , if you make 25 runs per year , then you should only need an annual freshening , or maybe you won't need it freshened at all , everyone's driving style is different , I could go out and ruin a trans in one day at the power level I'm at if I constantly beat on it over and over , it wouldn't matter who built it , it's hard , but to help make driveline parts last in a street driven big HP C5 , you have to have a lot of self control , and know how to treat the car responsibly .
that depends on your power level and driving style . I sent mine back over the winter months to be freshened because the car was going to be down for awhile getting a roll cage and other safety equipment installed , sometimes I'll make 35-40 runs within one month , so the amount of times it has to be freshened during the year varies , if you make 25 runs per year , then you should only need an annual freshening , or maybe you won't need it freshened at all , everyone's driving style is different , I could go out and ruin a trans in one day at the power level I'm at if I constantly beat on it over and over , it wouldn't matter who built it , it's hard , but to help make driveline parts last in a street driven big HP C5 , you have to have a lot of self control , and know how to treat the car responsibly . Mike - are you going to put a removable chute on the back? Mine is going on after the pro-10.0.
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Safety Car
Joined: Apr 2004
Posts: 4,097
Likes: 10
From: East Coast
Originally Posted by asmokegars
Mike - are you going to put a removable chute on the back?
Seriously though , if/when I break 150 trap speeds , the removable chute will go on .
Pro
Joined: Aug 2001
Posts: 724
Likes: 0
From: West Palm Beach FL
I would jump on one of these units if it were 3000.00 off......Would you be interested in selling the parts minus the transmission. This would be for the do it yourself people....
6000.00 ...Ill take one now!!
Tom
6000.00 ...Ill take one now!!
Tom
Former Vendor
Joined: Nov 2004
Posts: 218
Likes: 0
From: Reno NV
Originally Posted by Tomulrich
I would jump on one of these units if it were 3000.00 off......Would you be interested in selling the parts minus the transmission. This would be for the do it yourself people....
6000.00 ...Ill take one now!!
Tom
6000.00 ...Ill take one now!!
Tom
This is why we can not sell just a parts kit
If a good late model 4l80-e core (1998-2006) is sent in this will save about $900.00
and if you send a built race trans the savings to swap it over would be an added savings to you
Safety Car
Joined: Sep 2002
Posts: 3,948
Likes: 0
From: Aurora IL
St. Jude Donor '06
Originally Posted by yankman
You can send your Transmission (4l80-e) to us, but the Mods to the case, front pump assy, and new shafting that is needed plus machine time to fit up all of the custom adapters and hand alignment of all centerlines takes special tooling.
This is why we can not sell just a parts kit
If a good late model 4l80-e core (1998-2006) is sent in this will save about $900.00
and if you send a built race trans the savings to swap it over would be an added savings to you
This is why we can not sell just a parts kit
If a good late model 4l80-e core (1998-2006) is sent in this will save about $900.00
and if you send a built race trans the savings to swap it over would be an added savings to you
Former Vendor
Joined: Nov 2004
Posts: 218
Likes: 0
From: Reno NV
Originally Posted by Z06GMAN
So I guess I will ask first. What would be the cost if you sent in a Built race trans to you for the labor, machine time ect??? I am saying out the door.
If the transmission is in a useable state (new GM, aftermarket rebuild or low time unit) build the package will be in a $8000.00 to $8700.00 window
Thank's for the ?'s
