Originally Posted by
sc0r1a
5.7 vs 5.4 is in the same ball park power wise. And you have to think about the axles. Thats what is different in the trucks. a 3/4 ton has bigger axles than a 1/2 ton. Bigger axle means strong and will be able to pull better also the gearing can be different which will also help towing. The heavy duty trucks (3/4 and 1 ton) trucks are made for hauling more weight.
Thanks for your reply.
IMO their 1/2 Silverado towed their 5th wheel fine. So if an F250 5.4L would be about the same (or better?) than I think it'd be sufficient for what we'd need it for.