i dont have much experience with silvy's but as for towing... ive towed many cars.. tow dolly, open trailers and 24' enclosed even. With my denali, (99 OBS) even towing a empty open car trailer was noticeable of the truck, in regards to acceleration handling and braking. I would never have attempted anything more than an open loaded aluminum car hauler. I would not have felt safe. However, any larger towing, i did with my dodge ram, 2500 cummins diesel, even going up hills you could barely feel the strain and even handling was almost normal. we used antisway bars with the 24' and it felt like an empty open trailer. i towed a blown sbc 1940 Willys to nj from CT with no worries. Even at higher speeds, a trailer behind the ram felt MUCH better. Ive towed some stuff at 95mph(yea not safe, i know but i did). Id never do that with my Denali either.
Now granted, this doesnt have much to do with the silvys, bt i just wanted to share that in some cases, TQ and chassis/suspension does make a big difference. For the ocasional towing of you car on an open trailer, a 4.8 should be good. I plan on getting a 20' enclosed someday for my SS so hence why i'll always keep my dodge ram.
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