Mounting The Drivetrain
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One thing I definately have never liked about the Caddy V8
engines was the ugly valve covers. Luckily, I had recently picked
up an Allante engine for its unique intake runners, so why not
use its unique valve covers as well? Pictured above is the engine
with the stock valve cover removed, and a picture of it's soon
to be inhabitor. I thought long and hard about swapping the entire
intake manifold, since it adds 20+ HP, however, I decided against
it. Afterall, I need SOMETHING to do for a project down the road!
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Pictured above is the front poly transmission
mount, made by Rodney Dickman at www.RodneyDickman.com.
As you can see from the left photo, a spacer was added in to both
bring the mount ever so slightly closer to the mounting bracket
on the transmission, and to add some height to the mount. To add
even more height, two thick steel washers were added between the
mount and the cradle, as seen in the right photo, to adjust the
height to the the right setting so that the engine was completely
level sitting on the cradle.
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For the rear poly transmission mount, I again
used Rodney Dickman. He uses the standard Energy Suspension GM
350 poly transmission mount, part Number 3-1108, to make his Fiero
tranny mounts with. The rest of the mount is 1/4" steel plating
that is bent and formed to fit the oem position. However, some
custom things like this are never exact. Firstly, I had to raise
the height of the mount ever so slightly, using 1/2" thick
steel spacers that I cut from some scrap metal I picked up at
a local machine shop. The purpose for this was to make the engine
sit level. Secondly, I had to trim off the edges of the steel
plating in order for the mount to fit in the stock citation location
and relocate the holes that hold the steel to the poly mount itself.
Also note in this picture that the poly cradle mounts are installed
into place with their oversized form fitted steel washers.
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On the left side of the picture, you can see
the engine mounting bracket that I fabricated using an AutoCAD
template made by Jon Lagler of www.fieroaddiction.com.
The template was made assuming an '84 to '87 Fiero cradle was
being used, but for my application, it worked as well. Citations
and Fieros share virtually the same drivetrains, sharing all the
same mounting points and even the same part numbers for motor
mounts. The only aspect of this engine mounting bracket that was
different was the thickness. At the time, I only had 3/8"
steel available to me. As a result, I was forced to notch the
bottom portion of the bracket as it was VERY close to making contact
with the oil pan. To keep things simple, the actual poly mount
I used was the same Energy Suspension part no. 3-1108. if you
examine the picture on the right, I was forced to grind a corner
of the mount off, as a large beed of steel left over from the
welding was left behind, interfering with the mount being seated
flush against the flange. The red line indicates where the bracket
is to be seated on the block.
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Anybody noticing a trend here? For all 4 mounting
locations, the Energy Suspension GM 350 transmission mount, part
no. 3-1108, is used. One of the reasons I chose to go with Rodney
Dickman's transmission mounts over WCF mounts ( www.westcoastfiero.com)
is because they utilize the same poly mounts that I would be using
on the other mount locations. This will make replacing a bad mount
much more economic in the future. Another very notable item in
the split picture above are the steel spacers I used for this
front engine mount. At the time, the only thing that was available
for scrap that would get the job done were these 1/4" stainless
steel spacers. Little did I know how difficult it would be to
drill holes in these babies, even with the use of a drill press.
The density of this steel was so great that I went through 5 rather
expensive drill bits JUST to drill two holes in each plate.
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The exhaust system setup on this motor will
be utilizing dual oxygen( O2 ) sensors. For this reason, as well
as available routing space for the exhaust pipes, I chose to go
with two front Cadillac Seville/Eldorado exhaust manifolds. After
cleaning the manifolds with degreaser and laquer thinner, they
were painted with 1200 degree high-temp ceramic paint.
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Voila! She's mounted and ready to go into
the engine bay. Notice I did not use the rear valve cover from
the Allante engine. The reason for this is because many accessories
physically mount to the rear valve cover. The Allante rear valve
cover does not have the provisions for these accessories. I will
be waiting for the Allante intake project before I swap over the
rear Allante valve cover.
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Looks good, no? The entire drivetrain and
cradle assembly is mounted on top of two automotive wheel dollies.
Between the two of them, they are rated for 2,000 pounds, so handling
this weight is a cake walk. They will facilitate rolling the entire
assembly underneath my '81 X-11 once the front is jacked up in
the air.
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