Engine Casting # Help
11-25-2007, 05:20 PM
#1
Pro
Thread Starter
Engine Casting # Help
Folks:
I have a 350 and the rear casting number is 3970040 or 3970010 it's difficult to read. On the front pad it reads V0407CMB. Does any one know what this is? A casting date indicates it could be a 1975 motor.
I appreciate any help you can give me.
I have a 350 and the rear casting number is 3970040 or 3970010 it's difficult to read. On the front pad it reads V0407CMB. Does any one know what this is? A casting date indicates it could be a 1975 motor.
I appreciate any help you can give me.
11-25-2007, 05:48 PM
#2
Drifting
probably an 3970010 block 350 4 bolt main, CMB IN 1972 WAS FROM A 165 HPCAMARO IT WAS A 3 OR 4 SPEED . IN 1975 155HP NOVA MANUAL TRANS ACCORDING TO CHEVROLET BY THE NUMBERS
11-25-2007, 05:55 PM
#3
Drifting
Block 3970010 used on 350 CI corvette from 1970 thru 1979, also used on camaros. CMB engine suffix is from 1972 and 1975 camaro 350 CI engines. Looks like you have a 1975 camaro 350 CI block in the car manufactured in the Flint engine plant on April 7. You will need to look at the casting date for the block to figure out if it is 1975.
11-26-2007, 12:57 PM
#5
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The 3970010 block had a LONG production life - about seven million of them were cast from 1969-1979, and they were used in all applications - car, truck, Corvette, marine, industrial, etc. 27,000 of them became 302's, and all the rest were 350's. 
11-27-2007, 03:33 PM
#7
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