MFL wrote:
IMO, the weight may not be as much of a problem, as the GCWR of the 454/4.10. It may be asking a lot for an older low HP engine, 3-speed auto, to carry that much wt, and pull a high walled RV as well.
I'm sure JIMNLIN, could chime in here, since he has the same truck, and likely towed heavy with it.
Jerry
The one thing this post is wrong about, the tranny! This year and from about 94 or 95 on is it has a 4 sp auto. Yeah same first three gears when the TH400 was the norm behind a 454, but with an overdrive. Still a POS trans in my book...then what do I know! I've only had one of these two units go over 100K miles, and that is the one in my 2000 C2500 with a small block. All the BB/diesel autos have blown up these model trans like clock work in the 30-35K miles range. If I spent more time on the hwy, I might be better off, but doing a lot of local stop and go driving, the trans is geared too tall for heavy stop and go with 4.10 axel gears, 5.13's might work.......
Also as noted, that year was a votec 454, so it had 295hp, vs the tbi/4bbl before it at 235, and if you go older than 1980, it was a whopping 195hp!
Marty