Transmissions and Drivetrain Need help with your trans? Problems with your axle?

I want to firm up my 700R4 shifts >>?

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Old Feb 16, 2001 | 11:39 AM
  #1  
doc's Avatar
doc
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Joined: Jul 1999
Posts: 2,149
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From: Mims, Florida
Car: '87 IROCZ
Engine: 395 ZZ4
Transmission: ProBuilt 700R4
Axle/Gears: 9 bolt 3.70s
I want to firm up my 700R4 shifts >>?

Recently, I had a garage install an 2200rpm Art Carr torque converter. With the stock TC, I use to get rubber with the 1-2 shift. But now I have a softer shift probably due to the higher stall speed of the Art Carr TC.

What can I do to firm up these shifts?

I think that I'd get loer Ets if I had harder shifts. What do you guys think?


------------------
'87 L98 TPI IROCZ, AFR190 heads, 3.70 gears, ZZ9 cam, 2400 Art Carr TC, SLP 1 3/4" headers, SLP cat-back, no cat, no AC, no MAF screens, Accel manifold base & SuperRam, Edelbrock double roller timing chain, MSD ext coil & distributor, trans cooler, 52mm TB with airfoil, TB coolant bypass, AFPR(58psi), K&N filters, Hotchkis lowering springs, Car-Pro custom chip, Lay Ind. ram air kit, 265/45R16 Kumho V700 tires.
ET 13.39sec @ 107.21mph
'90 Eagle Talon AWD, no rust thru 9 winters
'99 Camaro SS, red, 6-spd, T-tops, Mcleod clutch, Pro 5.0 shifter, MAF processor, Direct Flow airlid, K&N filter.
313.7Hp & 320.6ft-lbf, ET 13.55sec @ 105.1mph
next mod: 4.10 rear gears
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Old Feb 16, 2001 | 11:42 AM
  #2  
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Can't do much because the harder shifting won't be felt through the "mush" of the sloppy high-stall converter, which you are seeing now. (EDIT: basically, the shift cannot be hard due to the fact that the tires are not directly linked to the engine output, at least lesser so thatn with an OEM low-stall converter) To shift hard again, you must shift at higher rpms under more pedal effort.

I find this a nice tradeoff because most of thie time, the softer/mushy feel witha high-stall is ok in daily/city driving but when you get the rev's up and the TV cable out, BANG!!!

[This message has been edited by FastBroker (edited February 16, 2001).]
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