Turbo LT-1

[ECMnut at aol.com]

Good point, but the vacuum in the manifold is not an 
accurate measurement of what is happening in the chamber.
What's going on in the cylinder drives what your gauge reads
out in the manifold, while the pressure changes in the cylinder
are much more extreme..
( Well, it sounded good when I was thinking it )
Mike V

> I think it is the extended time at high rpm.  How much vacuum can you have,
>  10 or 12 psi?  That is only a 150 lbs of force on a 4 inch piston.
>  
>  Gary Derian <gderian at oh.verio.com>
>  
>  
>  > The high vacuum stress makes sense..  High vacuum, as in allowing
>  > the engine breaking to slow you down after a run, really shortens the
>  > life of aluminum rods..
>  > Mike V
>  > >
>  > >  IMHO Pistons, pins, bearings, and block webing  ( and cast cranks)
>  > usually