Cascade Crew

Xophertony

ok. so i have an automatic. i am thus unable to choose my shift points. the only way i can "fool" the tranny into shifting when i want it to is by letting off the gas for a second. the only problem with this is when i stomp it again the tranny will downshift. the generaly accepted way to ramove this feature is to do a bunch of tranny mods i do not fully understand (yet). but what if...

if i remove that cable on my throttle body that tells the tranny to down shift when i floor it will it not downshift when i go WOT?

i know this would not be good for street use, but what an easy mod to do and undo at the track.

somone tell me if this will work.

aaron_sK · Posted: Mon May 08, 2006 9:07 pm Post subject:

Uhh... isn't the problem with no shift at WOT only in OD, or is it both? I never use OD when racing before I hit 75ish.

chevymad · Posted: Mon May 08, 2006 9:42 pm Post subject:

That cable on a 700r4 is NOT a downshift cable.. its a TV cable. TV means throttle valve. It controls the actual line pressure in the transmission. If you leave this disconnected you'll quickly burn up your trans. Even if you should change the radius of its mounting point you'll burn up the trans. I think what you are actually wanting is the vette servo.

Xophertony · Posted: Mon May 08, 2006 10:52 pm Post subject:

the vette servo involves tranny modification, i was trying to find a way to achieve a similar outcome without turning a wrench. so if the TV cable is the Throttle Valve cable, what do you call the cable from the shifter to the tranny? i always thought THAT was the "TV" cable. i had always assumed the Throtle valve cable was just to tell the tranny when do downshift....

well it was a good theory. Very Happy

glad i did not just try it to see what happens Shocked

as for the vette servo.. i do not plan on doing ANYTHING to "build up" my TH700R4. i am going to drive it untill
a: it explodes
b: i swap in a 6 or 5 speed. Very Happy

Twilightoptics · Posted: Tue May 09, 2006 7:58 am Post subject:

Vette servo is just a bolt in piece. Real easy to do.

Even then sometimes it will hang on the shift, you prolly need a good shift kit. That's a little more involved, but the trans does not have to come out to do these mods.

This is the second main reason I don't like 700R4.... 3rd would be that you can't got WOT in OD unless you put a different part in aswell.

Xophertony · Posted: Tue May 09, 2006 10:14 am Post subject:

so you mean when i was doing 95MPH down the track with my foor to the floor i was in third?

Dewey316 · Posted: Tue May 09, 2006 10:15 am Post subject:

Yes, you were in third. Count the number of times it shifts.

Xophertony · Posted: Tue May 09, 2006 2:43 pm Post subject:

weak....

Twilightoptics · Posted: Tue May 09, 2006 8:15 pm Post subject:

Why? If you aren't out of RPM in 3rd, why be in forth? You'll just lose ET and power being in the higher gear. With the 6spd I JUST shift into 4th (your third) before the line.

Schultzy89GTA · Posted: Tue May 09, 2006 8:27 pm Post subject:

time for that 4.56 gear set eh Paully?

-Schultzy

Twilightoptics · Posted: Tue May 09, 2006 8:29 pm Post subject:

Xophertony · Posted: Tue May 09, 2006 9:51 pm Post subject:

my engine stops making power at 4300 doesn't it? my tranny shifts at 5100 when i am WOT.

aaron_sK · Posted: Tue May 09, 2006 10:19 pm Post subject:

Actually, for that Bird, you're peaking out at 4400. Shift a little past that. Do you run a stall converter at all, or is it just a stock TH-700?

Xophertony · Posted: Wed May 10, 2006 12:41 am Post subject:

bone stock TH700R4

rjmcgee · The Hammer Joined: 08 Jan 2004 Posts: 2328

Twilightoptics · Posted: Wed May 10, 2006 8:09 am Post subject:

Shifting at 6300

The Drag Radials are 1 inch taller so my rpms dropped a bit. Plus the time to wind out 3rd makes to 4th gear rpms when I trap like 5000 or so

rjmcgee · The Hammer Joined: 08 Jan 2004 Posts: 2328

Twilightoptics · Posted: Wed May 10, 2006 11:51 am Post subject: