need help figuring out what this motor is. block casting 3970010. engine id 11n520375 / v01140cjd date code 8 a 51 head casting number 8873487/ a 121 can use some help

 

https://nastyz28.com/chevy-engine-code-stampings.php

 

The Chevrolet Lime Book list the block identification usages as follows:
CJD 71 350 270 4B,TH350 CA,CH,EC,NO
The CJD designation breaks down like this:

• 71 = the year the engine was produced
• 350 = for the cubic inch displacement
• 270 = the horsepower rating
• 4B = equipped with a 4 barrel carburetor
• TH350 = TH350 automatic transmission
• CA = available in the Camaro model
• CH = available in the Chevelle model
• EC = available in the El Camino model
• NO = available in the Nova model

The partial VIN given shows the engine was installed at the Norwood Assembly Plant so I think that would limit it was installed in either a Camaro or Nova.