The responses to the oil pressure question raised by Mr. Edelbach have
been interesting, but my experience and my mechanic (whom I trust) tell
me that it's more important that the oil pressure being shown on the
gauge at all readings be consistent: that is, steady at any given
engine r.p.m. These gauges are all "approximate" in any event; no real
values can be assumed by the markings on the face of the gauge itself.
I get quite a chuckle out of those that propose to do the Cadillac 500
cu.in. engine swap. I recall a story a couple of years ago in one of
the "mainstream" automotive magazines (my best recollection is that it
was Car and Driver, but I might be wrong...) about an enthusiast that
had done exactly the swap that's been proposed.
I remember pictures of the front wheels spinning, with great clouds of
smoke being produced; this certainly seconds the motion of those
responding to the suggestion that it's important to keep in mind that
you have to get that power to the ground somehow!
I have also seen a couple of (non-GMC-motorhome related) over the years
addressing the busisness of swapping a 454 for the 455. The articles
refer to a difference in the overall physical "envelope" of the engine
and I, for one, would be most concerned that the present flat floor
between the front seats might have to be modified if th e 454 is in fact
taller overall. This is in addition to the work required that Patrick
Flowers details in his response, and as he points out, is no small
effort.
This mailing list is the greatest! I've been enjoying all of it, and
look forward to the future!
Bill Marx
'76 Eleganza II
Livingston, Texas (presently in Seattle, Washington - brrr!)
billmarx
been interesting, but my experience and my mechanic (whom I trust) tell
me that it's more important that the oil pressure being shown on the
gauge at all readings be consistent: that is, steady at any given
engine r.p.m. These gauges are all "approximate" in any event; no real
values can be assumed by the markings on the face of the gauge itself.
I get quite a chuckle out of those that propose to do the Cadillac 500
cu.in. engine swap. I recall a story a couple of years ago in one of
the "mainstream" automotive magazines (my best recollection is that it
was Car and Driver, but I might be wrong...) about an enthusiast that
had done exactly the swap that's been proposed.
I remember pictures of the front wheels spinning, with great clouds of
smoke being produced; this certainly seconds the motion of those
responding to the suggestion that it's important to keep in mind that
you have to get that power to the ground somehow!
I have also seen a couple of (non-GMC-motorhome related) over the years
addressing the busisness of swapping a 454 for the 455. The articles
refer to a difference in the overall physical "envelope" of the engine
and I, for one, would be most concerned that the present flat floor
between the front seats might have to be modified if th e 454 is in fact
taller overall. This is in addition to the work required that Patrick
Flowers details in his response, and as he points out, is no small
effort.
This mailing list is the greatest! I've been enjoying all of it, and
look forward to the future!
Bill Marx
'76 Eleganza II
Livingston, Texas (presently in Seattle, Washington - brrr!)
billmarx
