��� Alexander Bilan Graciously said to us on Sunday �
> >  I think the 350 should have two notatios, the bowtie 350 was quite
> >different enough to be seperated. It's Siamesed cylinders lead to the
> >400.
>
>True enough, since we don't know what engine might be in the car.
>I thought the 400 came before the bowtie 350 came out.
>Personally, if I'm hunting down a car, I couldn;t care less if it was
>a siamesed block or not.  
 Well, we were under the impression that the Bowtie 350 worked so well
in the performance version that they punched it out to 400. Which...
has it's own problems :>
> > What about the infamous 409?
>
>That was before his chevelle was built. =)
Awww, phoey :> You listed all those motors and forgot the dreaded 409
because it predates him? ;>
 He might still find one if he hunts down older Chevies for a block.
I think alot of Chevelles got one from rodders who had them left over
from the early 60's and blew up the 327's they came with.
> >Plus there is now the 502 and 572 in the Big block line-up.
> >These are a stroked 454 and a new over the counter design respectivly.
>
>True, but the chances of one of these being in a low-buck car is
>pretty low. =)   (Hows that for backing out of the corner?)
hehe, keep backing ;>  you were listing all the blocks as I recall,
and left those ones out (which he might choose if he gets a bit of cash
together)
> >companies should REALLY get together to decide what the qualifications
> >are of a sb and bb. Ford has 4 distinct families, two of which are
> >recognized as BB but one of the last two hangs between confusing people.
>
>At least with a chevy motor, its a clear line. Its an actual small
>block, and an actual big block.
Well, the problem there is that everyone thinks along chevy lines now.
And that starts fights when a chevy person intrudes on a conversation
with Ford folks ;>
> >only has smallblocks. If anything they only have BB 's  :>
>
>Exactly! =)  And then theres Buick, which at a glance both bb and sb
>appear the same.
My point (even though I have never worked on a Buick)
> > Same for olds etc etc... There has to be a better way of defining these
> >motors.
>
>Displacement is out of the question as a deciding factor.
Very true. Some of the detuned BB's displace less than a chevy
smallblock.
>Theres got to be some sort of physical material/construction
>differences to give a definition.
I am still reaching for one unfortunatly.
>How about parts interchangeability? All small block chevies for
>instance can swap parts, albeit some would be an extremely bad
>combination, but a cam for a 305 fits a 307 fits a 350 fits a sb400. 
>How do pontiac and olds motors fair in this department? Any components
>that would work only in a series of blocks? (Sorta the Chrysler LA, RB
>blocks) 
Well pontiac blows this to sh*t. All their blocks have total
interchangeability. The heads even swap from 326 to 455.
But I still say Big Block, with the 326 being an extremely poor use of
the Big block. I was wondering about bearing sizes and actual dimensions
of stroke and bore. I mean, if it has capability of 4 inches of stroke
and over 4 inches of bore it's big block? Would that work?
 Certainly seems to eliminate the chevy smallblocks while leaving
the big blocks alone. It's hard to say really. That's why I say the
factory should define them.
... Is the idea of Siamese twins born in '69 rude?
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