Every Jap and Eur V8 sounds weezy. Even the Ital. for that matter, if it were not for those exhausts. Reason being that they fire like two normal four cylinders engines joined togather: i.e. over a plane crankshaft.
Even 4-Cyl with crossplane-crank burble like American V8s (e.g. some engines from the motorcycle world). And two 4-Cyl joined on a crossplane-crank (= American V8) produces just a crazy sound (that burble!)
There is alot of stuff explaining that sound in internet, but for the ones with an affinity for numbers, following explaination may be the most intuitive:
Suppose:
- Each number: 1 ... n represents a half-stroke of the crank
- Number 1 represents the power half-stroke, i.e. the one with the explosion sound
- 8 half-strokes = 2 revs of the crank, i.e. all cylinders on a 4-stroke engine have fired
Now, a normal flatplane 4-cyl fires like:
- 1 - 2 - 1 - 2 - 1 - 2 - 1 - 2 ( = 2 revs remember?
a flatplane 8-cyl:
- 1 - 2 - 1 - 2 - 1 - 2 - 1 - 2 (Cyl-bank 1)
- 2 - 1 - 2 - 1 - 2 - 1 - 2 - 1 (Cyl-bank 2)
^ that was pretty balanced, but sounds weezy
a crossplane 4-cyl:
- 1 - 2 - 3 - 1 - 2 - 1 - 1 - 2 ( notice the irregular pulse? just imagine again)
now the crossplane V8:
-
1 - 2 - 3 - 1 - 2 - 1 - 1 - 2 (Cyl-bank 1)
- 2 - 1 - 1 - 2 - 1 - 2 - 3 - 1 (Cyl-bank 2)
^ see that burble there? 
