what are the stock stall speeds for the 4 and 6 cyl fieros?

im looking for oe fitting convertors with different stall speeds, maybe higher, maybe lower depending on what the stock fiero ones are.

You won't find much. The stock, for TH125C, are around 2800 RPM, if I remember correctly.

Look for 3T40 and TH125C converters.

-Dave

The big thing to remember in regards to torque converter stall speeds is that it is just an estimate. Engines with higher torque, or in a heavier vehicle will stall higher, engines with less torque in a lighter vehicle will stall lower.

From what I can see by looking at various online parts specs, the Fiero automatics had 2 different torque converters.

GM72 with a 2060 stall was the primary V6 torque converter and the one used in every 88 regardless of enging. This converter was also optional from 84-87 on the 4cylinders as well. The codes for this one are: FJAB, FJBB FJ2, FJ2B, FJ4, FJ4B, FJ9B

GM73 with a 2385 stall was only used in a portion of the 4cylinder from 84-87. The codes for this one are: FC1, FC1B, FZ1, FZ1B, FZ2, FZ2B, FZCB, FZ3, FZEB, FZPB, FZFB

Here is an incomplete list of other torque converters compatible with the 125C/4T60
GM40: 1630 stall
GM42: 2095
GM63: 1420
GM64: 1420
GM70: 1525
GM71: 1895
GM74: 2560
GM75: 2760

[This message has been edited by fieroguru (edited 01-06-2013).]

See also my Cave, Torque Converter

this is what the paper tag on the converter looks like. the converter code is just above the # 3507

quote Originally posted by FFIEROFRED: this is what the paper tag on the converter looks like. the converter code is just above the # 3507

what does the 3507 mean? I've always assumed it was the stall speed, but I'm not sure.

quote Originally posted by AL87: what does the 3507 mean? I've always assumed it was the stall speed, but I'm not sure.

No.
Zoom in more then read tag...
FY9B
Then read my cave....

quote Originally posted by AL87: what are the stock stall speeds for the 4 and 6 cyl fieros? im looking for oe fitting convertors with different stall speeds, maybe higher, maybe lower depending on what the stock fiero ones are.

I posted several sheets with stock GM torque converter speeds along with tranmission gear and chain ratios over the auto transaxles used in OBD I apps. You'll have to search for it though. There are several different options.

The highest I recall the Fiero getting is about 2070 with a 3.33 FDR and that was with the Duke, I believe all of the Fiero V6 apps received a 1500 rpm stall. If you can't find it I'll look for it when I get access to my computer.

[This message has been edited by Joseph Upson (edited 01-07-2013).]

okay, thanks for the info, I had to break my neck to look at everything sideways, but its all good, I have a brace that I just took off and my neck is fine.

I have pulled two FJ2B GM72 2060stall torque convertors from 2.8 powered fieros, and oddly enough an FDAB GM42 2095stall from a third one...

[This message has been edited by AL87 (edited 04-30-2014).]

according to the ogre's cave:
the fj2b is the standard tc for the fiero v6 as far as I'm aware.
the fdab has a 215ft/lb damper over the fj2b's 104ft/lb damper.

My new question is this:
what does the clutch damper do? and what does the rating do as far as feel/drivability?

can anyone chime into the question I have about torque convertors above?^^^