So what year did the big bolts come out with self
adjusting brakes, hydraulic valve lifters, and beds
longer then 13' 8", and can cruise 55 MPH?

My son is looking to eventually get a second 2 ton
Chevrolet for his business. He has a 1946 2 ton
now. He cruises about 40 to 44 MPH. The truck bed
is 13' 8" long. Everyone wishes that his truck was
a little bit faster and the bed was longer.

My son drives his truck to the catering events. Most
trips are under 10 miles. Though a few events can be
80 miles one way. So he would like a truck that will
do 55 MPH on the interstate.

I think being his truck will get used a lot I think
self adjusting brakes would be good as well as
hydraulic valve lifters.

My son recently saw a 1959 2 ton Chevy with an
18' bed that has a 283 and a 5 speed transmission.

So the side question how does the 283 compare to the
261 and the 292?

Also what is the deal between the 5 speed and the
4 speed with the low 1st gear?

Thanks Jeffrey