GM Engine Sizes (was Chevy engines)

[Jim Davies]

On Fri, 6 Nov 1998, Tom Sharpe wrote:

> 
> > All this talk about GM engines leads me to postulate a theory about GM
> > engine size and ask if anyone really knows...
> >
> 421,425, 426, 427, 428 engines from Ford, GM and Chrysler were all <= 7 Liters,
> the FIA limit, same as the 5 liter (302) limit. The 428 Ford is actually at 426,
> but that name was already taken. The marketing name often did not match the
> actual displacement, ie 396 and 402s called 396 and 400.
> 
True. The marketing size and the actual size are often different. We are
dealing with a trivial size difference of course. This reminds me of the
urban legends surrounding trivial axle ratio differences in 4X4s.