**HARDER SHIFTS PLEASE**

[pontiacgp]

Did you go back and ask the guy? I'm sure he can firm it up from inside the pan. As stated those kits come in all stages . Stage 2 was all I needed in my Firebird.

I was wondering that myself...could be it didn't turn out the way he expected it to as well...

 

[khan0165]

I am running a big stall like yours, 3000rpm stall, with "stage 2" shift kit. I find with such a high stall, the hard shift gets gushy, and instead of a chirp, the tires just break loose and keep spinning.
Essentially, I don't feel a jerk because the stall makes its slightly gushy, but the shift kit does shift pretty hard and breaks the tires loose spinning...
The trans is set up for 4000rpm shift points, and so in normal driving in D, it'll shift smoothly from 2-3-4, but still hard from 1-2. At WOT, it'll shift farely hard, but too soon at only 4000rpm. So, when racing, I do the shifting myself at 5500 to 5900 rpm.
I am basically experiencing what Phoenyx said about his trans

 

[nawlins-tim]

LATELY I HAVE BEEN RESEARCHING THE EFFECTS THE VACUUM MODULATOR HAS ON SHIFT FIRMNESS. Right now The modulator line is going to a port coming out of the plate between bowl and carb (metering block I think). I need to try a different configuration of my vacuum lines I think.
But anyone who know transmissions could help shed some light on the modulator's role on shift firmness and if a trans rookie could adjust it if needed. WHAT DO YA THINK?

 

[pontiacgp]

LATELY I HAVE BEEN RESEARCHING THE EFFECTS THE VACUUM MODULATOR HAS ON SHIFT FIRMNESS. Right now The modulator line is going to a port coming out of the plate between bowl and carb (metering block I think). I need to try a different configuration of my vacuum lines I think.
But anyone who know transmissions could help shed some light on the modulator's role on shift firmness and if a trans rookie could adjust it if needed. WHAT DO YA THINK?

why havn't you gone back to the guy who built your transmission and ask him what he thinks?

 

[billyjack]

Many modulators have a small adjustment screw recessed in the vacuum port. It preloads the spring against the modulator valve in the valve body to counteract the force of vacuum. Low vacuum(heavy throttle)=hard shifts, high vacuum (light throttle)=soft shifts. Disconnect your vacuum line to the modulator, and take it for a test drive. If it still isn't firm enough, the problem is somewhere else. If it's firm enough, then it may be time to try and adjust the modulator.
Bill

 

[nycutlass]

just go back to the guy that built it and say you think i can get a harder shift from it, it's to soft for me !!!
they used to qestions like that and no one will know it better than the guy that built it .