vortec heads

[Bruce Plecan]

I'll tell ya, since I can't get the GN to detonate (with what I call a
reasonalbe tune), next motor is gonna be a 9 or 9.2ish CR job (with barrier
coatings).....
The Regal has flat tops for 9.5 with a 56cc chamber (AL), and that is
another one that is another one that is real hard to detonate.

The GN has run 20d timing at 20 PSI of  boost on 92 Octane, and only once
did it tickle the K/S and that was on the 2-3 shift for 2d.  40#er
injectors.  I think the smooth chambers, and 195 operating temp with the
cooling system right are the big answers here.
Bruce

> Does anyone know what the cc of the chambers in
>  these heads?  Also, are they the heart shaped
> chambers?  Wondering what CR could be achieved
> with TRW blower pistons.  (gotta have a turbo or two)
> I'm hesitant if the dish in the piston doesn't match
> the chamber..
> TIA
> Mike V
> In a message dated Sat, 16 Dec 2000 11:57:12 AM Eastern Standard Time,
KasaRyan at aol.com writes:
> << just for your info, I have built an engine with vortec heads, a crane
> 222/.462 cam, and put it in a 55 chevy and it runs great.  The
semi-official
> word is no more than .470 lift without changing to aftermarket springs.
>
> Thanks for listening to my electroyappin!

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