427 Small Block Chevy
Turn-Key Crate Engine With 550 HP Extremely Wild Street/Strip Power Plant
* Engine Shown With Optional Upgrades:
Chevy 427 small block stroker
with 550HP Hydraulic roller
fully forged bottom end engine
engine can be custom designed to tailor to
your specific needs. When we designed this engine combination
we had the weekend racer in mind who can
drive to the strip and back home.
We can also custom
paint your engine to match your vehicle at
your request. We are a dealer for March
Performance serpentine belt systems if you
choose them as your pulley manufacture.
We can also assist you in choosing the
proper performance street/strip transmission and
stall speed converter combination for your
vehicle and have it shipped directly to you
as your engine is being built.
See Below The Quality Of
Parts We Use In Our Engines
Short Block Assembly:
New Dart SHP 4 bolt main block with 4.125 bore
Block painted with 3 coats
of high temp ceramic engine paint customers
choice of color
with ARP bolts
pistons (Speed-Pro, Keith Black,
SRP, or Mahle)
Performance rods and main bearing (Clevite, King
or Federal Mogul)
ignition wires (Color Of Choice
Chrome valve covers
Flex plate (for auto trans)
during the building process
Each engine is
timing set and
adjusted for optimum performance
We video tape your live run
engine and send you a copy
We Are Constantly
Running Engine Deals
Please Call Us For
The Most Up To Date Pricing
Or E-Mail Us For More
**Customer Review of our Chevy 427**
have a lot of time to explain everything I am doing
and make a pretty letter. But I wanted to let you
know what is going on in my neck of the woods.
After deciding to order and engine from you 6
months, I place the order 4 months, then looked for
a car 8 months +/-.
I wanted to use a pre
computer car due to the wiring. After no luck on
choice, I designed a plan to inst ll into Suburban
approx $8000.00 plan.
I now have a super
suburban stealth vehicle I drive every day.
am continuing to modify ad could not be happier with
your work. At a younger time in life I had a
Chevelle 396/427/454. This engine is better and runs
like a sewing machine. Everyone is in awe.
Most cannot see what is making the noise even when
looking right at me.
I have tuned the system
tow and fly. I am still running 342 gears and will
soon look to cangetem to 411 or 456. But for now it
still runs very well.
I went through a stock
mid-pipe system with flow tech headers to 2.5"
Gibson out the back. I have now change to 3" all the
way and now will install a second system which will
work off of a 2-3" cutouts to activate quite mode
through 2.5" additional mufflers. This way I can
be quite of run as needed.
EFI outshines the competition in
ease of installation and
performance! The MSD annular ring
injection design produces an
air/fuel charge with much better
mixture as well as an even
distribution among the cylinders
that our competition cannot match.
Better AFRs equal better idle
quality, better starting, and better
overall drivability throughout the
rpm range. You and your engine will
be glad when you Go Atomic.
Body Assembly (An exact swap for
a 4150 Holley)
Comprehensive Instruction Manual
harnesses and connectors (Much
less harnessing than other
Control - Built in to the
Temperature Sensor - 3/8-NPT
threads for most manifolds
Sensor and cable (Many
competitive units are
Have a custom painted car?
Why not have a custom painted
engine? Give us your paint
code and we'll do the rest.
Old School Look:
One of the most popular and
durable dress-up kits available
today! This black crinkle kit
with its distinctive look and
boldly striking wording comes
with everything you need for
race day or show day!
world’s finest transmission
packages, custom made for
Proformance Unlimited. Each
Transmission Package is tailored
to your engine, and Test Driven
to ensure maximum performance. They
build them from Mild to Wild, if
you’ve got the horsepower, they
have the transmission.
TH-400 Add $1,800
vehicle is a hot rod, street car, race car,
or even a tow truck, here at Proformance
Unlimited we are here to help design and
build the combination that best suits your
vehicles needs. Please browse our engine
combinations listed below or custom design
one of your own. Proformance Unlimited is
best known for our precision custom designs.
From that special built stroker engine to
that turn-key drop in ready crate engines,
call Doug or Steve and we will be happy to
answer any of your questions.
All engines are custom built to order for
total customer satisfaction
PROFORMANCE UNLIMITED INC. RESERVES THE
RIGHT TO MAKE CHANGES IN DESIGN OR TO MAKE
ADDITIONS TO OR IMPROVEMENTS UPON ANY OF ITS
PRODUCTS AT ANY TIME WITHOUT INCURRING ANY
OBLIGATION WHATSOEVER TO INSTALL THE SAME OR
IMPROVEMENT UPON PRODUCTS PREVIOUSLY
MANUFACTURED. OCCASIONALLY DEPENDING ON
AVAILABILITY, PARTS MAY BE SUBSTITUTED THAT
WILL NOT EFFECT PRICE, PERFORMANCE,
APPEARANCE OR QUALITY OF THE PRODUCT.