ws6sol

iTrader: (2)

Ok, i just got my tranny rebuilt to hold heads, cam,and nitrous. but i have noticed that when i race i get more power if i manully shift, and the shop that i got rebulit said that i should keep it in drive,and that manually shifting is very bad for it. SO what i am wanting to know is there a way to shift my car without burning up the tranny? or is keeping it in drive the best way?

flewbyyou04r1

iTrader: (34)

its not good to manually shift a trans w/o a manual valvebody in it... if you get a manualy valve body it will be ok but finding one for a 4l60 is not gonna be cheap

2001NBMZ28

Let the PCM shift the car.

brad8266

iTrader: (23)

You cant shift faster than the trans can shift itself.

Gilbert@Ace Racing

We have built our share of Manual Only 4L60E's. In fact, those have been in the highest h/p applications.

It is not at all detrimental to the unit if it is converted properly. Typically though it takes a quick hand to get it into 2nd gear if it has any gear in it with a power adder.

g

ws6sol

iTrader: (2)

thanks for the help,what kinda of money would i be looking at to get the manual valve body?

jow02327

iTrader: (21)

iam also very interested in this

Rowdy94

iTrader: (13)

I would like answers to this as well. This would be a great thing to have at a road course or autocross. You're still letting the PCM shift the car, you just get to tell it when.

Gilbert@Ace Racing

If you would like to know more about the conversion, give me a call tomorrow!

g

performabuilt

iTrader: (25)

No going full manual will not still allow the PCM to do the shift. The auto functions are gone it will shift whenever you like but will also start in any gear position you ahve it in. For instance of you have it in the overdrive position it will star in 4th gear. You can use shift kits such as the transgo HD2 whic will allow you to hold the gear down as long as you like or downshift at any speed. However on up shifts by moving the selector up you are only allowing the PCM to comand the next gear when its ready to it still will not go till the PCM commands it.
Now in the case of manually shifting the auto I dont realy see it as detrimental , In fact there are some additional clutch packs that come on in MANUAL LOW and In D3 that can help support the low roller and input sprag assemblys.

heymoej

iTrader: (67)

there is a manual valve body in the for sale section!!!!!!!!!!!

1_quick_ls1

and its mine!!! hah

Thanks!

Rowdy94

iTrader: (13)

I may need some clarification on this. I may have misspoke. What I meant was, the actual act of the shift is still controlled by something (not the driver). It's still an automatic; once you tell it to shift, there is no clutch to mess with. The actual shift itself will be the same exact shift every time.

Now my questions are, with the full manual valve bodied 4L60E, are the line pressures, shift times, etc. no longer computer controlled? If they are, then the shift is still PCM controlled. If they are not, then you are effectively making the trans into a 700R4.

performabuilt

iTrader: (25)

With a full manaul set up such as the transgo comonly used there are no electronic controls you dont even have to hook up the plug but unlike the 700r4 the presure is controlled by a vaccume modulator instead of the PCS , The 700r4 works similar but ends up with fixed presure, When you convert the 4L60E to full manual you become the PCM

Rowdy94

iTrader: (13)

Gotcha. Thanks for clarifying!


On another note...You guys have got to get rid of that flyby every time a new page loads. I had to turn the volume off on my comp! lol Maybe just once on the main page would work hahah.

performabuilt

iTrader: (25)

Hey lol thats the coolest part of the site and I made the site , I like my roaring flyby lol just turn the volume down lol

1_quick_ls1

So what are the benefits of going with a manual valve body?

Rowdy94

iTrader: (13)

The way I see it, it would be great for a road race or auto-x application.

jow02327

iTrader: (21)

and by my understanding you could drop one into a m6 car without doing many mods to the wireing harness

1_quick_ls1

Well I figure if you just erase the tranny stuff. It wont matter right?