Originally posted by Viss1:
Originally posted by Kane:
Too bad they didn't have that 4 speed in 1990.
That's nice. Substitute "TH700R4" in your next Google search and you'll get the equivalent. Might want to research the similarities between the two while you're at it. Sorry my immediate recall of GM's auto trans designations isn't as clear as it used to be. But the point remains the same.
You confuzed me! The TH700R4 is a hydraulic light duty overdrive unit (like you will find in an 80s Camaro)... the 1990 454SS did not come with it. It came with the hydraulic TH400 3 speed, heavy duty, no overdrive unit.
In 1991 they swapped it out for the 4L80E, which is pretty much an electronic TH400 with overdrive.
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