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Joined: Apr 2014
Posts: 72
J
Wrench Fetcher
Wrench Fetcher
J Offline
Joined: Apr 2014
Posts: 72
So I am about to rebuild my first car engine. I have done many old Harleys and am fairly mechanically inclined. I am having the engine done at the machine shop and I will do the assembly. The engine is a 1955 235. Are there any good articles on how to set up the main and rod bearings? Any other things to watch out for when assembling a 235? I've looked online and there are many different opinions. I've ordered a 1955 manual. Any help appreciated!

Joined: Sep 2001
Posts: 29,270
Bubba - Curmudgeon
Bubba - Curmudgeon
Joined: Sep 2001
Posts: 29,270
Jimmy,

Post the engine serial number (pressed into the block to the rear of where the distributor goes into the block).

That code will tell you if it a car engine (with hydraulic or mechanical lifters) or a truck engine. The code will also indicate if a truck engine is first series or second series. The 1955-1st and 1955-2nd series truck engine have different water pumps and blocks.

There is a 1955 Car Shop Manual. There is also a 1955-1st series Truck Shop Manual Supplement for use with the 1954 truck engine; and, there is a 1955 (2nd series) Truck Shop Manual. Which manual did you order (vendor and part number)?

The set up for the main/rod bearings are described in the Shop Manual.

Joined: Aug 2012
Posts: 566
T
Shop Shark
Shop Shark
T Offline
Joined: Aug 2012
Posts: 566
I just got done reading a book called The Classic Chevy Truck Handbook by HP Books written by Jim Richardson. It mostly deals with the task force trucks. It has a great section on the 235. I have rebuilt my 56 235 and it brought back memories and I learned a few things that I should have done but did not do. Its a fairy small read but deals of stuff that will help the first time builder.


"As I lay rubber down the street, I pray for traction I can keep, but if I spin and begin to slide, please dear God protect my sweet ride." -Amen

56 Chevy 3100
Joined: Apr 2011
Posts: 181
1
Wrench Fetcher
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Joined: Apr 2011
Posts: 181
Something else to give some thought to is adding an HEI setup to the engine.. I did. Faster starts, Increased fuel mileage and also better low speed throttle response. But use 8 mm wire and gap the plugs at .045 or a little more and use a plug with a Platinum electrode. Just what it did for me on my stove bolt.
Normbc9

Joined: Jan 2000
Posts: 2,074
J
'Bolter
'Bolter
J Offline
Joined: Jan 2000
Posts: 2,074
If it's going in an earlier vehicle than a '55 you will need to modify the water pump to fit the car. Also possibly motor mounts could need attention.
Best of luck


It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed
Joined: Mar 2002
Posts: 9,115
'Bolter
'Bolter
Joined: Mar 2002
Posts: 9,115
I hope that you disassembled it yourself. If there were shims involved, you need to know about that. Also, make sure you have the rods checked to make sure they are not bent.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


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R
'Bolter
'Bolter
R Offline
Joined: Sep 2007
Posts: 393
Check this out.Engine Rebuild Article


It's a small world, but I wouldn't want to paint it.
Joined: Jan 2013
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A
'Bolter
'Bolter
A Offline
Joined: Jan 2013
Posts: 1,084
An excellent reference Rusty.


Allen
Yeah, well, that's just like, you know , your opinion, man - The Dude

1948 Chevy 3600 - goal Original restoration, Current Stage 1 - Disassembly and getting body in primer
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Joined: Mar 2002
Posts: 9,115
'Bolter
'Bolter
Joined: Mar 2002
Posts: 9,115
That was an interesting article but very short on some details. I enjoy his writing but that article is no text book. For instance, I don't think he dealt with how to remove the pistons when a ridge is present. Also, the numbers for piston clearance seem incorrect.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!
Joined: Dec 2008
Posts: 1,922
P
'Bolter
'Bolter
P Offline
Joined: Dec 2008
Posts: 1,922
Re: Richardson article.
Before removing the engine perform both a compression test (air gauge in the plug hole) and a leak-down test (air pressure into the plug hole) on each cylinder. Once the rockers are off it's impossible.
Never apply pressure to the outer ring of a damper. Hammering the inner hub should be done with the crank flange on the floor, or firmly against a substantial back-stop such as a steel door. Otherwise, you're hammering against the thrust bearing.
I'd replace any bearings with more than .003" clearance.

Joined: Sep 2007
Posts: 393
R
'Bolter
'Bolter
R Offline
Joined: Sep 2007
Posts: 393
From the article: "If the pistons hang up on a ridge at the top of the cylinders you will need to obtain a ridge cutter or reamer, available from an automotive tool store. Adjust the cutter so it will only cut a little at a time, then squirt light oil onto its blades. Now turn the cutter in each bore until the cylinder ridge is removed. Wipe up any residue or shavings with a rag.


It's a small world, but I wouldn't want to paint it.

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