New Ford 7.3 V8
I see people calling this a “big block” engine. Is it part of a series of engines of different displacements based on a common “big” block?
Forum Discussion
dodge guy wrote:
Ok everyone, the big block vs small block debate is ridiculous. Obviously most of you don't know much about engines. The term came from the physical size of the engine, not the displacement!
And if we want we can give the triton motors 3 designations, the 4.6 is a small block, the 5.4 is a big block, and the 6.8 is a bigger block. The physical size of each engine is larger than the next!
This! The big difference between the 4.6 and 5.4 is the 5.4 block is an inch taller tan the 4.6 but it is still a SBF.
In regards to t he LS series of engines.
A 4.8, 5.3, 6.0, 6.2 etc is the same size block with a different stroke and sometimes bore.
6.0 has a 4.0 inch bore while the 4.8 and 5.3 have a 3.78 inch bore.
The original aluminum LS1 was the same size block with a 3.9 inch bore.
LS7 had what I believe to be the largest production bore at 4.25 inches and that is a 427 small block.
There are largest displacement aftermarket LS small blocks. Same size block.
Same physical size, that is why LS swaps are so popular.
