I need desperate help of finding the cubic inch size of my GM v8 motor!! Please

  • Thread starter Thread starter Donnie L
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Donnie L

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an thank you!! :)? Hello all! I have a 1970 Pontiac GTO..... and I have a GM v8 motor in it......

The only problem is i dont know what size cubic inch that motor is!!

A friend told me its a 455......
I have no idea, but I really thinks its a 350..

Please help!
:)


Numbers on the engine from a viewable note are:

Top left header of the motor itself.
LO35 N D
O 6H GM4

and on the right side of the left header on the motor itself is
X 6H K145 M



Thats all I could find for now...Thanks!
 
a 350 and a 455 are visibly different, the 455 has a extremely wide intake manifold 350 smaller
 
look down buy the freeze out plugs pontiac cast motor size on the side of the blocks .
 
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