Introduction
Forbes magazine just published their annual "Billionaires"
issue. To no surprise we didn't make the list and we're
certain neither did you. This means that when we embark
on building next seasons bracket motor, or perhaps the
new mill for your street machine, we're gonna have to
do so on a budget. But don't fret, we can still be rich
in pride by building a motor with gobs of torque, dependability,
and an exhaust thump so wicked it might shake some loose
change out the pockets of Buffet and Gates - should
you be fortunate enough to drive by them.
Building a motor on a budget requires being smart and
resourceful. It doesn't necessarily mean cutting every
corner, but rather putting money in the places where
it counts. We wont kid you and say you can build a 100,000
mile motor which won't burn a drop of oil and make 500
horsepower for a few hundred dollars. Let's be reasonable.
We're talking about assembling, on your own, a big block
Ford motor that should last a couple hundred passes
or perhaps 20,000 miles in a street application. If
you drive your project car as sparingly as we do, 20k
on the odometer may take you out to 2010.
Of course the word budget means different things to
different people. We think about $3000 is a proper sum
for building a 460 from the ground up. This is assuming
you don't have the block, heads, or intake to start
with. If you are already in posession of these parts
then naturally the costs come down. Follow along as
we build a Streetwise 460 destined for our project 1973
Gran Torino.
Sourcing the Motor
In order to keep costs down FordMuscle techs went in
search of a low mileage or well-maintained stock 460
engine. Our goal was to source a standard two-bolt main
460 bottom end for no more than $350, but more importantly
find one which required nothing more than a bearing
and ring job. Keep in mind post 1988 Ford 460 motors
were fuel injected. While the bottom ends are no different,
the head design is and will cause issues with carbed
manifolds.
Naturally the first place to look for the 385-series
motor is in wrecking yards. Since the late 1960's Ford
has been dropping the big boy into all kinds of intermediate
and full sized passenger cars, trucks, commercial vehicles,
and even motorhomes. However, vehicles typically end
up in the wrecking yards for one of two reasons. The
primary reason, as you can guess, is because a vehicle
has outlived it's useful life, which usually means the
bottom-end from one of these cars is likely to require
machine work. The majority of wrecking yard vehicles
fall into this category. The second reason a vehicle
lands in the wrecking yard is because it suffered a
sudden and unexpected trauma that sent it there long
before its' time. Unfortunately
for enthusiasts these vehicles rarely are towed directly
to the "Pull it Yourself" yard. Rather they
may find their way through a variety of small business
"recyclers" who will vulture whatever parts
are deemed profitable. For example, if an 1990 F350
is determined a "salvage" after a severe accident,
the insurance company may auction the car off to an
intermediate broker who will then bid it out in whole
or part to body shops, use parts outfits, and wholesale
recyclers. Once all potential profits are squeezed out
the remaining carcass might be transported to a "Pull-It-Yourself"
yard. In some cases, particularly where there is no
insurance or the totaled car has no significant value
in whole, the vehicle may just sit at a tow or impound
yard.
The point is that in order to score a low-mileage motor
you
may have to get creative and try to intercept a vehicle
before it
reaches the public yard. As often in life, success usually
comes down to connections or good networking that only
results from numerous failed attempts. Talk to shops
and towing companies, peruse the local classifieds,
and take a drive through the "bad" side of
town. You'll be surprised at the vehicles you find with
inconspicuous for-sale or "parting out" signs
parked in dingy tow lots under the freeway overpasses.
We did experience a number of dead-ends in our quest
for a suitable bottom end before we finally struck gold.
FordMuscle picked up a 460 engine from a 1996 Fleetwood
Pace-Arrow RV that had severe fire damage. The odometer
showed 25,260 miles but we knew only teardown would
reveal the truth (see side bar). For $200 dollars we
trusted our instincts and bought the motor from a local
impound lot that was willing to make the deal. We immediately
recovered $50 of that cost by selling the 460 EFI heads,
double sump oil pan, and other items which were of no
use to us.
Tear Down
When buying a motor under these conditions you have
to assume some risk. It is not likely that the seller
will let you hear it run, or engage you in a discussion
about the condition of the crankshaft. Gather whatever
visual cues you can regarding the life of the motor
or donor vehicle. We feel it is advantageous to pull
a motor from a vehicle as opposed to buying an already
pulled motor, vehicle not present. If the underside
of the hood is plastered with NHRA and Clay Smith cams
decals you may question whether or not the motor was
modified or run hard. Since our vehicle was a well kept,
elderly owned, motor home we had good reason to believe
the internals would be in fine shape. When confident,
strike the lowest price you can and bring your bounty
home for a detailed disassembly and inspection.
We cannot emphasize enough the importance of a thorough
and detailed disassembly and inspection. Maybe in a
bare bones budget or "demolition derby" motor
we'd be willing to fire it up as is and go. However
since we do want to maximize torque and have dependability
from this mill we start with a step by step check. This
will help identify machine work that may be necessary,
and perhaps even a decision to look for another motor.
We have identified a cracked block before.
The side bar to the right shows the process we followed
to disassemble our motorhome 460 bottom end. With everything
checking out okay, we proceeded to recondition the short
block.
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