engine casting - 3970010 (the most common block Chevy has ever produced)

Casting date - 293

ON the matin surface of the head and block there are two numbers:
1. 13k501768
2. f0202ckl

My heads have a casting # of 3998993 and a date of A103

And finally my intake is 346249

Thanks in advance for any help.
Jeff

ps before anyone suggests that I try contacting GM, they couldn't help, nor could GM Goodwrench and they both suggested that I try GM's Hobby Shop. I tried and they have shut that division down.

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Ground up restification of a '70/'73 hybrid with an unidentifiable 350.

CODE CKL Decodes as 1973 passeger and chevelle 350 L-65 .

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70RS 327 PHASE 2 BOWTIES 11.1 3.73 POSI UNDERGOING TOTAL RESTORATION
JIMMY

Thanks 70RS327,
Your the first person that could ever decode that CKL. I even sat at Barns & Noble for an hour and a half reading through their engine numbers books. Do you have any specs on that engine?

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Ground up restification of a '70/'73 hybrid with an unidentifiable 350.

CKL 145hp with turbo 350 or turbo 400

3998993 head 350/145hp or 175hp or 307/115hp
casting date A103=January 10 1973

346249 Intake Rochester 4bbl 1975 350 or 400

I have been researching the 1st number on the head deck.

1 = Chevy
3 = year (73)
K = plant where made (can't find what city K is the abbreviation for)
501768 is the last 6 digits of the original cars vin


Does anybody have any idea how to find how to match up that vin with a car?

The K stands for the Kansas City, Missouri Plant. They made Chevelles and El Caminos.

i didnt know that there was ever a plant in kansas city, mo.

I double checked and for 1973 the K plant code is for the Kansas City, Missouri Assembly Plant.