someotherguy
Truly Awesome
You may have misunderstood what I wrote, or maybe I could have worded it better: what I mean is they did not combine the 454 with the light duty transmissions. The TH400 and 4L80E that were used in the 454SS of course are heavy duty transmissions; the 2500"LD" comes with a 700R4/4L60E and they would not put a 454 in front of that in a factory combo.But on the subject of 454s ,you may well be right, however the outlier would be the 454SS which came with the TH400 at first and 4L80E later (MT1 RPO) so there is precedent for putting heavy duty power line into lighter trucks with 5600 GVWR.
Richard