318 poly vs la 318

[infernocloud]

whats the easiest way to visualy tell the difference in a polly 318 and la 318.

[Cooter]

The 318 Poly is commonly and incorectly, called a "Big Block 318" due to it's enormous size. The valve covers are a sure fire way to tell...Most of the internals are the same save for the camshaft (Different valve arrangment).
Nothing wrong with the poly cept the weight.

[elacruze]

Simply, the LA valve covers have straight edges and the Poly covers are scalloped on the exhaust side, and much wider.

[John_Kunkel]

And the poly valve covers attach with bolts down through the top...LA has bolts around the outside.

[Nacho-RT74]

whats the easiest way to visualy tell the difference in a polly 318 and la 318.

the "zig-zag" shaped valve cover on the poly