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Jul 21st, 2025 | | | | Joined: Apr 2005 Posts: 122 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 122 | Looking at 1958 235 out of Delray. Considering putting it into my 1959 3100 Napco. The current engine in my Napco is a 1960 235 out of a car and I wanted to get an engine that was closer to original dates. From what I understand it was not unheard of to have a 58 stamped engine in a 59 truck? On my 1960 235 the carb linkage needed altered. My question is, are there similar differences between a 1958 235 out of car versus out of truck?
Not sure it's worth all the trouble.
Thanks again for your advice/help.
BrianM | | | | | Joined: Jan 2001 Posts: 5,320 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,320 | 1960 was the first year to drop the front throttle pivot option, resulting in the need to do throttle linkage work. Here is a link to my blog post that addresses that. Blog post
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Mar 2010 Posts: 1,659 Curmudgeon | | Curmudgeon Joined: Mar 2010 Posts: 1,659 | The obvious things:
Cars have an electrical solenoid starter and trucks a mechanical activated starter (except truck Hydramatic transmission).
Cars have an automatic choke. Trucks manual.
Cars with automatic transmission had engines with hydraulic lifters. All trucks solid lifters.
On-and-on.....other stuff....but nothing that can't be swapped out.
The same 1958 car casting number for head and block could be used by GM in the following year 1959 truck.
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I'm guessing, but the stamped engine serial number is usually correct for the year the engine was fully assembled.
On the other hand, I've personally seen a 1953 truck that was titled by GM as a 1954.
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1959-62 engines had a change in the rocker arm oiling system.
You would not want to install the 1958 head and rocker arm assembly on the 1959 or later block. Some homework required.
I only mention this in case you want to mix and parts in the future.
"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."
| | | | | Joined: Sep 2001 Posts: 29,262 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,262 | "Cars have an automatic choke. Trucks manual."
(except truck with Hydra-Matic transmission - they had automatic chokes) | | | | | Joined: Dec 2017 Posts: 1,609 'Bolter | | 'Bolter Joined: Dec 2017 Posts: 1,609 | Other things to consider. In 59, Chevrolet made the last of the upgrades to the 235, Including improved oiling to the rockers. So your 60 has all,of the last upgrades GM mad to that platform.
Mike
| | | | | Joined: Mar 2004 Posts: 6,189 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,189 | I've personally seen a 1953 truck that was titled by GM as a 1954. GM never created a "title" for any of their vehicles, that was and still is done by the State the vehicle was first sold in. Many States back in the day titled vehicles by the year in which they were sold, not by the model year. Mike B  | | | | | Joined: Jan 2020 Posts: 620 'Bolter | | 'Bolter Joined: Jan 2020 Posts: 620 | You guys are a wealth of knowledge, ALWAYS learning something new, and thanks buoymaker. Ed
Currently making 1954 3100 better than new and Genetics
| | | | | Joined: Apr 2005 Posts: 122 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 122 | Thank you. It is always amazing to find out how much I don't know. I think I may stick with the good running 60 engine until a good 59, from a truck comes around.
I'm probably over thinking the whole matching numbers thing and should just enjoy my truck. I'll let my daughter worry about resale value!
Once again, thanks for your help.
Brian M | | |
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