i have a 65 malibu ss with 327 that was not original, orig was 6 cyl. i want to determine HP of motor and other info like age, etc. i was told i can go to a GM website and input the numbers and the history will be there. anyone know what that website is? also, there are three numbers on the front of the motor , which is the engine no.? the only one i can read is 14N214377, partial on another is __521CMA. what are these no.s if they aren't for the block? thanks!!!

www.mortec.com will give you the engine info. There is some good transmission decoding info over at www.nastyz28.com

i have a 65 malibu ss with 327 that was not original, orig was 6 cyl. i want to determine HP of motor and other info like age, etc. i was told i can go to a GM website and input the numbers and the history will be there. anyone know what that website is? also, there are three numbers on the front of the motor , which is the engine no.? the only one i can read is 14N214377, partial on another is __521CMA. what are these no.s if they aren't for the block? thanks!!!
14N214377 is the VIN derivative of the original car. 1 (Chevrolet) 4 (1974), N (Norwood assembly plant) 214377 sequential number for that vehicle.
For 74 V8s, CMA looks like the suffix code for 350/145hp w/TH350 Nova and the '521' looks like the date of March 21.

I don't believe GM has a site for decoding information. Not to sound too blunt, but they could care less about a car over a couple of years old. http://www.mortec.com has a lot of casting numbers for blocks and heads and both my site and http://www.nastyz28.com/decode.html has come good information.

See your other post, I decoded all the engine date there. It a 1974 Camaro 350/145hp 2-bbl carb engine. Not an SS or Z28 engine (those had 4-bbl).

You got a run of the mill small block 350.

No GM Site. Even with current models, only dealers have access to that info..