In a message dated 9/25/2001 10:57:52 AM Pacific Daylight Time,
ghalvorson@earthlink.net writes:
> The cam is a Isky "Mega" series hydraulic. I haven't done much else
> yet but I suppose I should start checking lobe duration and lift at the
> valve. I can't think of any other reason two cylinders would build such a
> significant difference in pressure. I suspect valve timing. I'm not
> sure of what the usual compression build would be but I just don't think I
> have
> six bad cylinders. The old manual I have indicates a compression
> reading of 150# is the approximate range for a compression check for 454
> chevys.
>
>
Anybody who has visited the Isky facility on the past 20 years would
have a pretty good handle on your problem and question.............Ardun Doug
King
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