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I am looking at a Chevelle for sale and just wondering what are SEVERAL easy ways to just "look" at the engine and tell if it is a 307 or a 350? Are the valve covers different sizes, etc... To tell the truth, the 350 Chevrolet looks kinda small compared to an International 345. Any thoughts on this matter, or comments? THanks...
 

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We need the casting number. On the block behind the drivers side head. Starts with
39***** something.

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Harley
69 461 El Camino Nitrous Model
69 Chevelle coupe
71 SS Camaro
75 L-82 Corvette
71 Gremlin X
Kerrville,Tx.
 

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The three letter code behind the alternator on the block also helps ID the motor. this pad sticks out just in front of the passanger head. Will have the last 6 digits of the VIN of the original car, some other codes indicating where the motor was made, then a 3 letter code ie 123456 K10 CRA We can look up those codes for you if you post em. The block casting numbers harley mentioned can be hard to see if the motor is in the car.

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Frank W
Melrose MA
Gen X Member#22 (MA)
73 Malibu Coupe
hometown.aol.com/folingo/folingo.html
Mighty 305 Power
 

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Such a real possiblity that the engine has been changed or parts have been swapped, you do need to look at the numbers. A four barrel carb, and 8 inch front balancer would indicate a 350, but you still can't be sure a 307 or even a 305 hasn't been transplanted in there at some time. The early 350s were - and are pretty much in demand.
 
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