I believe you are referring to a 318 max wedge.
This answer is wrong. There is no such thing as a "max wedge" 318. The poly or polyspherical head 318 was considered an industrial motor used in early 50's to 1966 full size Dodge Plymouth and Chrysler cars and dodge or Fargo (Canadian) trucks. There is not a big market for these motors due to the popularity of the 413 and 440 max wedge motors used for hot rods in the 60's. I hope this clarifies any questions you had.
First of all there is no such thing as a "wide block" 318.Chrysler corp made an "A block" engine that used poly-spherical combustion chamber heads and then made the "LA (late A) engine using wedge heads.The blocks are near identical and have the same dimensions.Ill-informed persons may have confused the Ford designation "Y Block" with poly head coming up with the misnomer WIDE BLOCK
The 77 has better metallurgy. Any advantages of the 68 318 are not specific to the block.
yes
About 6,500 lbs
318
No.
Yes. Same block, different stroke.
Yup, same thing. The Chrysler Corp. used the same LA Block 318 from 1967-2002, With a few updates here and there, so if your trying to use one in a car from that year to go in another, it'll work.
Any thing is possible, but the 1990 318 is a different block than the "Magnum" 318 that was available in the Grand's.
Yes there are, if you search on google formopar b-body 318 poly headers, then you will find this (among other sites):http://chucker54.stores.yahoo.net/ttipo318he.htmlHopefully this site will answer your question.
Not with out modifications.
On the driver's side of the engine block you should see either 318 or 360 stamped.