The Stovebolt Site Forums The Shop Area Engine Shop numbers help

I have seen an engine with the looks of a 1953-55 first series engine, like this one, but cast much later. That engine had the passenger side pan rail bulged out like the 1955 second series-63 engines(1953-55 first would be straight down both sides). I would check the pan rails to confirm.
I just re-looked at the pictures of this engine and see a raised circle above the starter. I have seen this marking on another engine which was reported to be a 261(maybe Canadian).

dave the pan rails do buldge out about half an inch. Yes there is a circle above the starter. my buddy says on the other side below filter, there are 2 looks like bolt holes but are solid. this makes him think its a 235 full pressure. keep the help coming and i will keep answering. I had 4 friends help me take truck apart and now it is just me putting it back together. I don't really know alot but with u guys help and me being persistent, i will try my best.

54-55
261
3703414
3733950 my #
3703570
3836850 my#
this is what i seen on 261 sight

can u have a 261 motor without the captain's bars

I have not seen a 261 without Captains bars or the circle your has.

so now what

Its a 54/55 261 according to your numbers. Does this answer your question?

yes it does. thanks so much

without captains bars

Yeah, all I can say is, the numbers, if read perfectly, is a 54/55 261. Since dirt and debris can change a 3 to an 8 or whatever, if its clean, and these numbers are good, its a 261.

I have seen so many anomalies with these trucks in parts, if seems that every now and then, maybe its Friday, the GM employee does the wrong thing and all comes together anyway. Maybe those captains bars are there.. you just cant see them. Let us know when you have taken the engine to an engine shop, had it shot peened and magnifluxed, and cleaned. Maybe it will all become apparent. Good luck! If its a 261 its a nice engine!

thanks dave shot peened and magnifluxed what does that mean

Shot peening
Magnetic inspection

thanks brad

Jimbo, got caught up in your thread and one of the pictures triggered me to send you one more bit of info you may need. On the 261's it is crucial to have the oil passages on the block either run direct to each other, or through an oil filter, before you run it. Google chevrolet 261 engine, and you will find this mentioned in several places. Jim Carter has a great article called "The forgotten 261" Good luck with your truck!!

thank u. thats what i am trying to figure out now. have oil filter and oil bath. would like to know what goes to that brass line in block. when i opened it, antifreeze came out so i closed it. have no idea what goes to it.

jimbo,

Please post again the link to the photo of the brass line in the block.

" . . . would like to know what goes to that brass line in block. when i opened it, antifreeze came out so i closed it. have no idea what goes to it."

jimbo,

There are two oil filter lines. Those lines should not be to a port that has water inside.

There is a post on the block between the two oil ports. That post is the pivot for the throttle rod bell-crank. If you remove that post/bolt, coolant will come out. Some blocks have holes for two different pivot-post locations - one hole gets used for the post and the other hole gets a pipe-plug.

so how do i hook it up

jimbo, look close at the end of that stud, the bell crank center hole slips onto the stud, probably with a washer on each side, the spring clip on the end holds it in place, the rest of the linkage hooks to either end of the bell crank to change the direction of motion between the pedal and the carb .... if you had that stud out [to find water behind it] best to insure you put some type of sealer on the threads

Bill

thanks bill, but i'm sorry, i am lost do u have a pic

...Picture of belcrank ...

...picture...

...picture...


...video...


Note. Above picture is off a 54 car 235 with a 216 manifold
It may or may not apply to you.


Just showing my set up. Use only as reference.

thank's dad. now i see. Have to find where i put the parts

that video is so cool