Wanted: search 261 ci chevy/pontiac engine

[Didier Huybrechts]

to replace my 216ci
delivery in Belgium if possible

[Dave Newcomb]

Mfg'd 54-62 Early eng's do not have full flow oil filters, later ones Must use that feature. ID by "captain's bars" just above starter location. One for sale on the HAMB $500 core. Dealer for them In Oregon...James Larrowe JJ Inlines www.jjinlines.com

[Jim Burrill]

Look for a 1954 or '55 235CU engine. Same block as the wartime 216 but with decent oil pressure.

The 54/55 block mounts the waterpump the same height as the wartime 216 so the fan blade clears the bonnet. If you use a later engine, you will have to use a water pump adapter to drop the fan blades.

I did this when the original 216 in my C-15A blew.

I went looking for a "235" based on recommendations from friends, and only by blind luck did the only 235 block in the local junkyard turn out to be a 1955 model. I only learned later about the waterpump issue.

Good luck!

[Didier Huybrechts]

Hello,

to Dave, I registered on "HAMB" and I applied for a 261
thank you for the info

to Jim, the 235 or the 261 have the same block, there are only a few small modifications to make, it remains only to find the good engine and to make it repatriate towards belgium

thx
didier

[Jim Burrill]

Hi Folks,

Have a look at this webpage about 235 water pumps. You will see the 1956 and later blocks won't fit a CMP without using an adapter.

http://chev235guy.blogspot.com/2013/...n-adapter.html

In the tech specs he has the 261 listed as well.

[chris vickery]

What you want is the 261 GM truck engine and not the Pontiac car engine.

[Dave Newcomb]

HI; about the 261 blocks... they have siamesed cylinders to accommodate the larger bore 1+2, 3+4, and 5+6 also 6 extra steam holes in the head and block. I have 5 of these engines, use them in old Chevs and g-506 military trks. They are around in the US and Canada, don't know about Europe. Dave

[Didier Huybrechts]

to jim, thank you I will start to read and translate your site (long work) for a French speaker

to Chris, the 261 chevrolet engines were used in canada in pontiac cars
otherwise the 261 was used in trucks and pick up

to Dave, if you ever sell one make me a sign
* in fact if I find a 235 it is also ok for me, in Belgium these engines 216/235/261 are not easy to find

thank you all
Didier

[chris vickery]

Yes Didier but there was a difference between the Pontiac engine and the GM truck engine.

[Lang]

Didier

Just a point on these GM engines.

I was rebuilding a 1942 Chevrolet ute (pick up) and had five 1938-47 GM engines collected from around the area.

It was a nightmare as GM seemed to change specifications every 5 minutes. They look, at first glance to be identical but once you try to use parts to build up one good motor you find flywheels have different numbers of holes and spacing for both crank and clutch mount, water pumps are different, heads have different water holes (can be blocked by putting on the wrong head gasket), different length valves, different sump shapes etc etc.

It took parts from all 5 engines to get a good working engine and a lot of pulling off things that did not fit properly.

Lang

[Mike Kelly]

Originally Posted by Lang

Didier

Just a point on these GM engines.

I was rebuilding a 1942 Chevrolet ute (pick up) and had five 1938-47 GM engines collected from around the area.

It was a nightmare as GM seemed to change specifications every 5 minutes. They look, at first glance to be identical but once you try to use parts to build up one good motor you find flywheels have different numbers of holes and spacing for both crank and clutch mount, water pumps are different, heads have different water holes (can be blocked by putting on the wrong head gasket), different length valves, different sump shapes etc etc.

It took parts from all 5 engines to get a good working engine and a lot of pulling off things that did not fit properly.

Lang

You are not wrong re: the different 216 configurations. The first version was 1937.

They changed the push rod length in 1940 as well as the valve lifters. They also changed the valve length to make allowance for the fitting of valve caps . I think the post war version was different again.

[Didier Huybrechts]

Hello Lang,

you're right, and that's why I want to find a complete 235/261

thank you