alsfarms Posted August 19, 2018 Share Posted August 19, 2018 I am looking to purchase a late 60's early 70's Chevrolet straight 6 engine. My problem is I know what I want but do not know how to identify the engine by the numbers. I have the block casting number and stamped in number from the machined boss. Can someone help me to determine just what the engine is that I am looking at? The block casting number is: 3883057 and the stamped number is: T0504H. I am guessing that the "T" in the stamped number calls for the engine to be built in the Tonowanda Plant? Any help is appreciated. Thanks in advance... Alan Link to comment Share on other sites More sharing options...
Frank DuVal Posted August 20, 2018 Share Posted August 20, 2018 Re-read the casting number. I can not find any listing of this number in several on-line database. The single letter suffix makes it before 1970, according to what I read. Link to comment Share on other sites More sharing options...
Frank DuVal Posted August 20, 2018 Share Posted August 20, 2018 https://www.novaresource.org/codes.htm I found a list of suffix codes. The H is a 194 cu in mated to a 3 speed transmission fro 1962, 3 and 4. 1 Link to comment Share on other sites More sharing options...
alsfarms Posted August 20, 2018 Author Share Posted August 20, 2018 Frank, Thanks for your postings and information. I was hoping the straight 6 was going to be a 250, but no such luck this time. Also, I did get one digit wrong in the casting number, it should have been 3833057. It may be easier to look up if the number is totally correct! Thanks again for your taking the time to respond. Alan Link to comment Share on other sites More sharing options...
Rusty_OToole Posted August 20, 2018 Share Posted August 20, 2018 Unless you are a stickler for originality you will likely be happier with a 230 or 250 engine. They are alike and interchangeable. In fact almost impossible to tell apart. If you want to go big the 292 truck six will fit, although it it 1" taller. 1 Link to comment Share on other sites More sharing options...
alsfarms Posted August 20, 2018 Author Share Posted August 20, 2018 Hello Rusty, You are correct. I will not be purchasing the 194. I am waiting for a decent 250 or even a 292. They are around and with patience I know I will find exactly what I prefer. Alan Link to comment Share on other sites More sharing options...
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