Reverse Cooling?

[Gary Derian]

I misspoke, all truck versions have iron blocks.  The 6000 has iron heads,
also.  The 4800 has 9.6:1, the 5300 has 9.5:1 and the 6000 has 9.4:1.  All
use 87 octane.  The carryover 4300 V-6 has 9.2:1.

Gary Derian <gderian at oh.verio.com>

>
>
> On Tue, 4 May 1999, Gary Derian wrote:
>
> > The 6.0 liter version for trucks has an iron block.  I think reverse
cooling
> > is only a minor improvement compared to just a basically well designed
water
> > flow path.
> >
>
> Do the trucks with the iron blocks have the same compression or did GM
> change it?
>
> Roger