Thread: newbie with a 402

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Well, like Pat says Hardly any real difference between those 2 but if he said u have a straight 402, I am willing to bet he meant a 1974-72 block, best way is to look at the engine stamped code that is on the end of the block. on the pad just under the alternator, assuming that is the passenger side of the truck. My guess you will find a CLB code motor

Originally Posted by sleeve396

Well, like Pat says Hardly any real difference between those 2 but if he said u have a straight 402, I am willing to bet he meant a 1974-72 block, best way is to look at the engine stamped code that is on the end of the block. on the pad just under the alternator, assuming that is the passenger side of the truck. My guess you will find a CLB code motor

.. i put both my hands on the valve covers and can tell you how much power them BBC can make

Originally Posted by pat mccarthy

.. i put both my hands on the valve covers and can tell you how much power them BBC can make

HMMMMMM, the laying on of hands by Minister McCarthy!!

ok so my uncle whos been a mechanic for years looked at the stamped code just under the alternator and it said T1012CTB... now can anyone tell me anything about this number?

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Big Block Chevy Engine Suffix Stamping Codes
The T is Tonawanda factory and the numbers are the date code when it was built.

he just meant it came from the factory as a 402, which is the same engine as the 396 but with .030 bigger bores. He must have just meant it wasn't torn down and bored later on. I have the same motor.