Dean, I have the 700-R4/3.73 combination in my '82, and the ratio between the speedo & the tachometer is almost dead-on @ 3:1:
75 MPH = 25 (hundred) RPM in 4th Gear with lock-up, so simple math says 47 (hundred) RPM would be approx 141 MPH, but I doubt the converter would lock-up, nor the...
I believe the First Gear ratio of the 200-4R to be 2.75:1, and combined with 3.73 rear-gears, it would 'feel-like' you retained your THM350, but had 4.11s in the rear while in First Gear
2.75 x 3.73 = 10.2575 div/by 2.52 (1st Gear in THM350) = 4.07, or almost 4.11 gears
I have a 700R4 with a...
I don't know Joe Perzan.
I have used a Trans Specialties 8" spragless converter when the car was strip-only with good results, but a friend suggested ATI when the car went back on the street:
ATI converter is almost as-quick as the TS piece, with a higher MPH, but not as consistent in my...