Explain: Torque Converter Slip vs. Gears/MPH
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Joined: Jul 2002
Posts: 1,193
From: San Diego, CA
On the other end of the spectrum, the PT4000 in my 6800 RPM shift point car is doing the trick 
The 5700 extension keeps the car nicely in the powerband. Like you said, it's all in what the car needs!
My PT4000 still creeps at idle and can actually pull the car uphill at idle! Around town driving leisurely I wind it up to about 2800 rpm to briskly run w/ traffic.
The 5700 extension keeps the car nicely in the powerband. Like you said, it's all in what the car needs!
My PT4000 still creeps at idle and can actually pull the car uphill at idle! Around town driving leisurely I wind it up to about 2800 rpm to briskly run w/ traffic.
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Joined: Jul 2002
Posts: 1,193
From: San Diego, CA
That sucks about your tranny and converter...As you can see the same thing happen to me...The damn metal from the converter (looks like one of the berrings went out in the converter) went thru wiping out both my 5 pinion plantaries, sprag, pump, 2nd gear Red band, 3/4 Zpack, some assembly that holds the clutches (Reaction shell....The beast maybe). I believe some valves in the valve body need replacing. Replacing all those parts plus replace the B&M 28000GVW cooler...(can't trust to get all the metal out...). And can't forget the new SS3600 Converter I just had to buy... 
I'm sure glad Ellis "Twofast4lv" is hooking me up on this...
I use to lock my converter at the track years ago. I would gain about 1 mph locking at 100mph (remember, good extension) so, had to wait...I did try different mph lock points but that mph gave me the most 1/4 trap speed. However, I never could notice a ET difference Locked vs. unlocked. I figured it was so late in the run (locking it) that it just didn't give me enough time to help me before the 1/4 came by. I stopped locking to keep the stress down on my old converter clutch when I saw no difference in ET. Some guys say it helps ET, some guys say it doesn't...Seems to help less with the Yanks .....Never tried it on my VIG3200....
I'm sure glad Ellis "Twofast4lv" is hooking me up on this... I use to lock my converter at the track years ago. I would gain about 1 mph locking at 100mph (remember, good extension) so, had to wait...I did try different mph lock points but that mph gave me the most 1/4 trap speed. However, I never could notice a ET difference Locked vs. unlocked. I figured it was so late in the run (locking it) that it just didn't give me enough time to help me before the 1/4 came by. I stopped locking to keep the stress down on my old converter clutch when I saw no difference in ET. Some guys say it helps ET, some guys say it doesn't...Seems to help less with the Yanks .....Never tried it on my VIG3200....
Transmission have been the bain of my racing existance. From broken t56 output shafts to destroying 2 th400s. If I can break a drivetrain part in any way, I'll make it happen.
Locking a converter and seeing a gain seems to be a tricky subject. I have a friend that sees 4mph and 1-2 tenths when he locks is tci 4000. It seems to depend on the setup and the converter, but generally you will gain mph. If you gain mph early enough in the run, you should gain ET.
Sometimes I wish I could lock my th400 to see the difference.
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Joined: Dec 1999
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From: Jupiter (NPB), Fl
Winding to 2800 or so in traffic doesn't bother me at all
Don't get me wrong, it moves fine below that, but I like to be the lead car in traffic lol.
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