Is it a bird? a 302? 350?

Discussion in 'Original Drivetrain Topic' started by ISRcamaro, Jan 9, 2017.

  1. ISRcamaro

    ISRcamaro Veteran Member

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    I own 1980 Z28 and few months ago I uploaded what seems like the casting number of my engine - 3956618
    People figure it out from the pics and I saw it can be various engine types.
    The last owner told me it's a rebuild 350 but I don't trust him since his knowledge about cars is the same as my knowledge at rocket science... well....

    Is there any outside differences between the 302 and the 350 from the outside? Is there's anyway to tell by the outside what's the engine size?
    If not. What's the easiest way I can check exactly for the engine without dissemble it too much.
    I added the pics again. No cowl tag and that's all the numbers and letters that are on the engine.

    I want to order some engine parts and I'm not sure how and what to look for. I am sure that I don't supposed to look for 80 350 sbc engine parts.

    20160901_163235.jpg 20160929_144718.jpg 20161002_111001.jpg 20161013_173455(0).jpg 20161020_155921.jpg 20161020_155937.jpg 20161020_160045.jpg 20161028_175734.jpg 20161213_164148.jpg
     
  2. Gary S

    Gary S Administrator Lifetime Gold Member

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    The 3956618 block was used for part of 1969. It was used to build 302, 327, and 350 engines. Externally, they all look the same, but internally they have different stroke lengths. The best way to know is to pull a spark plug and attempt to measure the stroke of the engine as you turn it over.
    By 1969, the 350 was very popular while the 327 was dropping fast in popularity. The 302 would be very limited production so odds say it is a 350 like the previous owner said.
     
  3. loyal guardian

    loyal guardian Veteran Member

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    i may be in left field... but maybe the carb might tell ya a little... a 600cfm on a 302 or 305 might be a little big for it,

    on the other hand im not positive off the top of my head without doin a lil research myself. i was just generalizing but if the PO did know a little about engines hopefully he sized the carb to the engine properly.
     
  4. Bandit723

    Bandit723 Veteran Member

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    You can look for the partial vin number on the engine block to try and determine what size engine you have. The last 2 characters in the vin will be the engine suffix code that will indicate the engine size. from looking at your pictures one seems to be showing the vin but not sure it is to hard to read, but looks like it ended in EE which would then mean this is a 1969 350 small block.

    Here is a link to help you locate the vin number and one more link to look up the suffix code.

    http://www.thecamaro.com/Decoding/Chevy-Engine-Code-Decoding/

    http://www.1968ss.com/sbcsuffix.asp

    Good luck!
     
    Last edited: Jan 9, 2017
  5. 70lt1z28

    70lt1z28 Veteran Member Gold Member

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    If you can drop the inspection cover from the transmission, you may be able to see the crank flange. The 302,327,350 all had a unique shape to flange. Google it to see the differences. I think the 302 was a full circle flange while the 350 has a partial round/partial rectangle flange. I don't remember about the 327 but it was different too.
     
  6. ISRcamaro

    ISRcamaro Veteran Member

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    I might change the oil pan gasket or move the headers at the future so if so I will check it better. But if I won't...

    I checked a lot of engine coding sites. There are no any numbers at all on the engine. As far as I can tell as long as the engine is inside the car.

    As far as I learned the curb is 750 CFM. Bigger then 600.

    I do believe that the engine is 350 but I just want to make sure. As far as for me. You are the expert for this car. There are not a lot of those kinds here.

    So if so - Do I need to search engine parts by fitting it to 1969 350 Camaro? Any idea what the engine type (Guess it isn't the LM1) and what the stock HP just to be approx.

    are those pics helping?

    20160919_142853.jpg 20160929_145132.jpg 20161019_130433.jpg 20161028_175711.jpg 20161028_175734.jpg
     
  7. Bandit723

    Bandit723 Veteran Member

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    The vin stampings are usually quite shallow and are most likely covered up by the paint. also there is a chance that the vin has been disturbed in the engines past history and is no longer readable.

    its hard to gauge what kind of hp the engine is putting out with out knowing all that was done to it. Stock 350 with an engine suffix code of EE was 255 hp. from the looks of things I am sure you are doing better than that.
     
  8. ISRcamaro

    ISRcamaro Veteran Member

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    :cool: ahah you do know me

    As long as thing won't go south. I'm aiming higher then that. Just trying to reliaze my starting point. I believe that sooner or later at the process I'll reavile more off the inside of the engine:cool:
     
  9. clill

    clill Veteran Member

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    A 302 crank flange will have a pie cut out of it. Do a google search.
     
  10. flowjoe

    flowjoe Moderator Staff Member Lifetime Gold Member

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    I can't see the engine pad in any of those photos. That's where the build date and suffix would be. The suffix follows the build date and the VIN derivative is stamped separately - sometimes on the same pad and sometimes on the flange by the oil filter (depending upon plant and build date).

    FWIW, I don't see EE being used in '69 but do see it in '68, '67 and '66 (all 275/327) and '65 (250/327) - maybe I'm just missing it.
     

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