What year is this engine? and ci
From this chart - I think you may be misreading the number - 3970010 is possibly the actual number: Which makes the engine pretty old 68-72 350 V8 - 4 bolt main. I included past this number so that you can see that the number you posted doesn't actually exist. And thus my conclusion that the 9 is most likely a 0. Hope this helps.
3970010
350
69
Corvette
late 69,4 bolt main
3970010
302
69
Camaro
Z/28,Late 69, 4 bolt main
3970010
350
69-79
Truck
2&4 bolt main
3970010
350
69-79
Pass,Chevelle,Camaro,Nova,MonteCarlo
2&4 bolt main
3970010
350
70
Corvette
300,350,370 HP 4 bolt main
3970010
350
71
Corvette
270,330 HP 4 bolt main
3970010
350
72
Corvette
200,255 HP 4 bolt main
3970014
350
69-77
Pass,Chevelle,Camaro, Nova,MonteCarlo
2 or 4 bolt main
3970014
350
69-79
Truck
2 or 4 bolt main
3970014
350
72
Corvette
late &undefined;72,200 HP,255HP 4 bolt main
3970020
307
68-73
Pass,Chevelle,Camro, Nova
3970020
307
69-73
Truck
3970024
307
69-73
Pass,Chevelle,Camro, Nova,Truck
3992386
327
68-69
Pass,Chevelle,Camro, Nova,Truck
Large Jounal
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