I've got the old tranny that took a dump at about 100,000 miles. It's been sitting around for quite a while collecting dust. I had the idea to just rebuild it and use it as a backup just in case the replaced one decided to do the same. That way I wouldn't be stranded for more than a couple days. Anyway I was thinking of getting all upgraded components and using it whenever the car got to the point where the current tranny wouldn't be able to handle the load. Then I could sell the one in the car and install the upgraded one. I'm just curious if this is a good idea, or if it's even worth it. I know I can get a rebuild kit pretty cheap so should I just rebuild it and sell it, or try what I was thinking?Thanks all,
Jason

 

if you can get your line psi to hold 275 under wot i should hold up pretty good. its always a good idea to have a backup, but if its built right you shouldnt have a prob.

 

My idea is to eventually have the car running real low #'s after it's paid off this November. Of course that will be throughout the next few years. I just don't want to waste time and money on this tranny if down the road I need to get a th400 or something built because the built 4L60E can't handle the hp & tq. I'm figuring if this tranny will work, I can buy all the upgraded components and save a considerable amount of money since I already have the tranny and I'd be doing the work myself. Let me know guys.

 

just realized its 2:00 wow.

my tranny guy has built 4l60's thet hold up to 10.64 1/4 mi on a full body street car. the gguy lives in dallas and said he sprays from line to line even through the shifts.

keep an eye on me i plan to push my 4l60 as far as it will go.
as long as you have the pressure it should hold. the problem with our trannies is 3rd gear piston is less then half the size of the 1st & 2nd thats why you never hear of 1st &2nd going away its almost always 3rd. you cant put bigger pistons in so you need more psi. if we could find someone to build larger pistons and drums for 3rd the a4 would be unbrakeable. until then we need the high psi to = enough force to hold high hp in 1:1.

to put it simple area x pressure=force
force=hold

gm really made a poore design on that 3rd piston. but with enough psi that prob can be overcome

 

Really? third goes first?
My second gear went on me.
I have a built 4L60E from a local tranny builder and so far its been the ****. Check around and see if you can find a tranny builder with a good rep building the overdrives.
The 60 will take alot of abuse if you find the right tranny builder, this is the key.

 

line presure between the 3-4 shift always is to low, thats where the problem is. a 700r4 can handle a 9sec pass, so it could be possible for the 4l60e to do it as well.

Vince

 

the guy viperkiller is talking about is a hydralic professor. he also has a guy in a 95 ta who has been runing 9s for 3 years on the same tranny, but get this he also plus his bass boat with it.

and the guy viper killer spoke of above spray a 300 shot out of the hole and never lets up.

 

We need one of those tranny builders to become a sponsor ! I would LOVE to know that my tranny could handle 600-700rwhp

 

he also cna build whatever kind of converter at whatever stall you want. alumin or steel doesnt matter.

 

Yeah I'd love to see a pro tranny builder become a sponser. I think it'd make things a lot easier on people. Instead of them having to do tranny conversions when they want something to handle the hp their making. I've been searching around and found a site that had 4L60E's at different stages. Like stage 1 450hp,stage 2 600hp, stage 3 700+hp. The prices ranged from $1500-2200. It would just be nice if I knew the builder was very reputable and his trannys were reliable.

 

There is no thing as a Bulletproof tranny. You may have seen someone make a 10.64 run on a 4L60,but how many runs can he make? Look at what all the people running 11s 10s ,and 9s are using. If your going to run low numbers get you a TH350 or TH400.

 

the guy i spoke of with the 9 sec TA has three years and 200+ 9 sec passes, last i heard and that was over a year ago.

so you need to know what your talking about before you speak.

 

I view bulletproof as something that stands up to several racing seasons. If a season is 100 passes and a guy gets four years out of it, then it is bulletproof. However a guy like me who makes 400 passes a year may get only one season, that is not bulletproof. Define your perspective and then interpret the options.

 

Still do not beleive that whoever is using a 4L60 in a 9 sec car that runs over 200+ passes a year, for 3 years, has not torn down his tranny. You are just telling second hand information

 

What's the avg cost to get one rebuilt and any good shops in the North Dallas area?