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Irwin Arnstein working on his
1959 Chevy 1-Ton


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#1409939 Fri May 14 2021 11:24 PM
Joined: Mar 2021
Posts: 54
C
Csims Offline OP
'Bolter
Wound this for sale and was wondering how this would be for a engine swap. Would be a up grade for hp and still somewhat original.

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Last edited by Csims; Fri May 14 2021 11:29 PM.
Csims #1409940 Fri May 14 2021 11:26 PM
Joined: Mar 2021
Posts: 54
C
Csims Offline OP
'Bolter
Sorry working on a picture

Csims #1409979 Sat May 15 2021 03:59 PM
Joined: Dec 2018
Posts: 1,709
F
'Bolter
Csims Looks like a good find,those ran fine assume it is 348 nice rod engine,kinda sick of 350,s . Good to zoom up to the gas station in !!

Csims #1409998 Sat May 15 2021 06:22 PM
Joined: Mar 2014
Posts: 2,998
J
'Bolter
That one (being from 1958) might have the rope rear main seal and if it does, you can not use the rubber seal in it. GM changed the design to a 2 piece rubber seal later in 1958. A friend had one of the early ones. He liked the engine, but it leaked seriously and as I recall you had to pull the engine to replace that rope seal. Might be worth getting the engine number and seeing if you could figure out more about it. Good luck.


Jon

1952 1/2 ton with 1959 235
T5 with 3.07 rear end
Csims #1410006 Sat May 15 2021 07:03 PM
Joined: Dec 2008
Posts: 1,707
P
'Bolter
I had that engine in my 1958 Impala convertible. It's the largest stock 1958 Chevrolet engine, called the "W", it's the ancestor of the 409 and 396/427/454 etc.
A more modern engine will be easier to rebuild and service, but those valve covers!!!
No small blocks allowed.

Csims #1410011 Sat May 15 2021 08:14 PM
Joined: Feb 2004
Posts: 24,733
H
Kettle Custodian (pot stirrer)
The 348 was intended to be a low RPM, high torque medium duty truck engine- - - -never intended to be installed in passenger cars. Above 5500 RPM, the valves start to float. Then in 1957, the supercharged Ford 312 engines started eating the 283 Chevy's lunch at the drag strips. GM cast a 3-2 BBL intake, stuffed a hot cam into the 348, and shoved it into the 58's to buy a little time while they got the 327 into production. They made good anchors for big boats back then- - - -60-something years hasn't changed that much, if any. The 348's 409's and early 427's with the W valve covers all had an oddball angle between the pistons and the heads- - - - - the "combustion chamber" is actually a part of the cylinder. The only recess in the head is a tiny depression where the valves fit. The heads are notorious for getting heat cracks due to uneven cooling.
Jerry


"Freedom's just another word for nothing left to lose"
Kris Kristofferson

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.
Ernest Hemingway

WAG MORE- - - - - -BARK LESS!
Csims #1410647 Thu May 20 2021 04:52 PM
Joined: Mar 2007
Posts: 1,745
Crusty Old Sarge
I know the 348 and 409 were a short run for Chevy. They were not really known for making power, and had a host of issues from the start. Even the great Smokey Yunick said you couldn't make power with those engines. You do have to agree that it's still one of Chevy's best looking engines.

Last edited by TUTS 59; Fri May 21 2021 03:34 PM.

Craig

Come, Bleed or Blister something has got to give!!!
59' Apache 31, 327 V8 (0.030 over), Muncie M20 4 Speed, GM 10 Bolt Rear... long term project (30 years and counting)
Csims #1410730 Fri May 21 2021 06:29 AM
Joined: Dec 2005
Posts: 554
A
'Bolter
I would love to have that motor for my Apache, if and/or when the 235 is not longer rebuildable.


58' 3200 235 3-speed/OD

Csims #1410775 Fri May 21 2021 04:32 PM
Joined: Feb 2004
Posts: 24,733
H
Kettle Custodian (pot stirrer)
I've got the 348's big cousin in my 61 American LaFrance fire truck- - - - -a 401 GMC V6. It's got the W-shaped valve covers also!
Jerry


"Freedom's just another word for nothing left to lose"
Kris Kristofferson

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.
Ernest Hemingway

WAG MORE- - - - - -BARK LESS!
Hotrod Lincoln #1410793 Fri May 21 2021 06:11 PM
Joined: Nov 2002
Posts: 2,379
C
Carburetion specialist
Originally Posted by Hotrod Lincoln
The 348 was intended to be a low RPM, high torque medium duty truck engine- - - -never intended to be installed in passenger cars. Above 5500 RPM, the valves start to float. Then in 1957, the supercharged Ford 312 engines started eating the 283 Chevy's lunch at the drag strips. GM cast a 3-2 BBL intake, stuffed a hot cam into the 348, and shoved it into the 58's to buy a little time while they got the 327 into production. They made good anchors for big boats back then- - - -60-something years hasn't changed that much, if any. The 348's 409's and early 427's with the W valve covers all had an oddball angle between the pistons and the heads- - - - - the "combustion chamber" is actually a part of the cylinder. The only recess in the head is a tiny depression where the valves fit. The heads are notorious for getting heat cracks due to uneven cooling.
Jerry

In addition to the tripower, Chevrolet offered a Carter AFB single four barrel on an engine they called "Super Turbo-Thrust".

The posers bought the tripower.

The racers bought the four-barrel.

The engines produced more power (regardless of the marketing dept.) and had less heat cracks due to better A/F distribution with the four-barrel than with the tripower.

Jon.


Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify
If you truly believe "one size fits all" try walking a mile in your spouse's shoes!
[image]http://www.thecarburetorshop.com/Avatar.jpg[/image]
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