Thread: 350 Engine code

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I went to the past posts and I didn't see an answer to my question so here goes:

Pulled a 350 out of a 83 Chevy pick up yesterday.

Looking at the casting codes, this is what I found and what I know.
3970014- 70-73
Low power 200
High Power 300
Main caps 2/4
LA Built Camaro
Cast in Tonawanda, eigth hour of a ten hour shift

Now is the hard part, this is cast on the passenger side rear

T7CON/2
What does this mean??

i believe its the actual date code check www.mortec.com their very helpful with casting #s

hey i also just found out i have the same motor and i did find if you check the code by the alternator and the last three letters are cmj its a ca. only motor it had very low compression like 8:2 or 8:5 i think the type of 350 is lm-1 they did use this motor in 1974 and 1975 for police cars and produced 160 rwhp and a trap speed of 85mph which breaks down to about 15.9-16.1 in a 1/4 the head cc's are 76 im switching to 67cc to jump compression a touch hope that helps figure some stuff out

We dis assembled the block tonight.

Two bolt mains

On the passenger side of the block, forward of the head we have two sets of numbers
To the top we have T0529CEX

Lower on the same area we have stamped
15N615684


Any help is much appreciated

Cam stamp is 497170

To the top we have T0529CEX

Lower on the same area we have stamped
15N615684

Built at Tonawanda N.Y. engine plant 5th month 29th day.
CE is a service replacement engine I don't know what the X designates. Could be dealer installed, or sent to dealer stock.
15N615684 could be the vin number check it against your VIN plate. Hope this helps