Torque Converter identification

Hi Justin,
The old school talk of the “torque converter diameter being smaller meant a higher stall speed” holds some weight, but is not always true. Can you pls.wrap a soft tape around and post the circumference?
Mfg’s usually stick to their colors, and external design sometimes differs, see attached.
A stiffened 89’-90’ GT (W/Driver) at 3,300lbs with a 350-370BHP 302/306 running a built C4 with a 1:1 top gear ratio winds roughly 2,700RPM’s at 60 MPH with 3.73’ gears. With all the above, the 286 Deg. Adv duration of an X-303 Cam, it’s 2,300-6,200 RPM range, with street/strip intent considered, I’m guessing a 2,800-3,000 RPM stall speed selection. I’d expect it to be near 500RPM’s below the advertised stall due to the car’s weight.
There is the option of sending it out and having it function tested where things like stall speed, flash rpm, lockup (where applicable) values will be given, as it’s performance testing..
Or, just replace the Trans front & rear seal, vacuum modulator and install it & see where the dust settles.
Converters range from 150$ to 1,500$+, average decent street/strip 350$.
Your C4 is a 72’-73’?...
Helpful link(s):


Best!
-John
P.S. Reference picture for ID is from TCS, Inc.