Complete Engines & Custom Builds


At Pro-Weld Performance Parts, we specialize in high-performance Ford
Modular Engines, including 2, 3, and 4-Valve configurations from 4.6L to
5.0L. Whether you're revitalizing an 03-04 Cobra engine or building a
custom powerplant for a hot rod or Factory Five kit car, we offer
complete rebuilds and tailored solutions for racing and specialized
applications. We focus on delivering top-tier engines, managing
everything from ignition systems and fuel management to intake and
wiring. We often pre-install and pre-program components to make
installation easier. Additionally, we offer custom colors, paint, and
finishes to ensure your engine looks as impressive as it performs. At
Pro-Weld, we combine technical excellence with aesthetic precision to
make your engine stand out and perform at its best.

Engine highlights below... Call for a quote
(859) 586-4069

Modular 4.6L 2 Valve

For a long time, the Modular 4.6L 2-Valve market has been a bit
stagnant; however, there has been a renewed interest in the engine. The
release of Trick Flows 2-valve Heads as well as improvement in both
carbureted and aftermarket fuel injection systems has also been well
received. The re-designed Heads allow for much better breathing. The
stock un-ported heads flow much better than any high dollar, custom
ported 2-Valve Heads. This means more HP for much less money, and better
efficiency and improved power output. The small size of the 2-Valve
Head makes if perfect for smaller Engine compartments, and lower hood
lines. You can choose from cast iron or aluminum blocks, and have a very
powerful small block Engine, one that fits in many vehicles without
having to modify or replace the firewalls. This makes the 2-Valve, a
great choice for many Hot Rod or Kit Car Vehicles.

Modular 5.4L 3 Valve

3-Valve Engines offer smaller engine packages which work well in Hot
Rods and Kit Car re-powers. The 3-Valve Heads flow some very impressive
numbers right out of the box and the Variable Cam Timing makes great
torque and power. You can have a factory Ford like Engine, or customize
one for your specific needs, either way they fit the bill for many
applications. The aftermarket has responded well to this engine, and
there are many custom pieces available for it. Ford built a ton of these
3-Valve Engines in everything from F-Series Trucks to Mustangs. This
engine was in production from 2004-2010. It's a nice little engine with
great potential. Ford cut product development when the 5.0L was
released. Still, there are many of these engines available for Hot
Rodders.

Modular 4.6L 4 Valve

Fords 4-Valve Modular Engine is one of the greatest designs the
company has ever produced. The 4-Valve has graced everything from Trucks
to Sport models. This engine has also been used in Road Race vehicles
like the Ford GT. Voted one of the best top 10 Engine designs in
history. The Ford 4-Valve has a very special place in my heart. It is
the reason I got into this and the reason ProWeld is still here. In the
beginning Ford had what was soon to be known as the TEKSID Block. These
all aluminum blocks were made in Italy by TEKSID Aluminum Inc which was
the World leader in Cast, Forged and Lost-Foam Aluminum Engine parts.
TEKSID provides the world's best automotive manufacturers with the
highest quality aluminum pieces in the world. I consider both the old
and new 4-valve Engines to be world class engines. We specialize in
03-04 Cobra refered to as the "Terminator" engine. This is the most
popular platform to work from as the stock 03-04 engine boasts 500-550
horsepower. IOf you want more power you need a bigger blower and better
internal parts. But with the 4-Valve engine as a whole there appears to
be no limits on its potential. Today we see 2600-2800HP!

Modular 4.6L Terminator Engine

In 2003 and 2004 Ford Built one of the best Modular Engine of all time.
The Cobra Engine also known as the "Terminator". These engines produced
an amazing amount of power while getting over 20 MPG on the highway!
Only available in the Mustang line and trademarked as the Cobra Package.
Only 15,000 of these cars were produced over a two year span. When these first started hitting the streets, all the known rules changed
overnight. Everyone wanted one! Websites as well as retail outlets began
offering aftermarket parts for the Terminator design. I think it's fair
to say that there have been more engines built to these specifications
than all other designs from the factory. Combine that with the ever
constant decline of available engines and parts you have a classic. This
will be the one that we all look back on and say "Boy what a Engine".
We at ProWeld specialize in the Cobra platform and want everyone to know
that you can get a new Cobra Super-Charged engine or parts to build
your own. Built per Ford specifications with new Ford Parts. We also can
supply you with any replacement parts for your project or all the parts
needed to turn your long block into a Cobra replica. Like anything good,
it comes in a limited number, and so these parts are getting harder and
harder to find, both new and used. We keep a constant look out and
supply of both new and used parts. Very soon, the day will come when
there will be no more "Terminator" parts from Ford, it's already getting
tough. Don't wait any longer for your dream engine.

Modular 5L FR500 4 Valve Engine

Wow, what a Engine! This design has competed in many Road Racing events
both here and abroad. Aggressive heads with raised ports allow a more
straight shot from intake to combustion chamber. The intake manifolds
were a work of art. I have owned every Modular engine made by Ford
except the 2000 Ford 5.4L Cobra "R" and this 5.0L Cammer. Let me tell
you a bit about the Cammer engine. The FR500C was a racing Engine used
in many classes of racing, and is what I have longed for. Produced for
Ford by Roush/Yates Racing and only available to those that were
participating in Ford Racing events. This Engine uses a aluminum block
that differs from the production blocks. Cast using better materials and
under a more controlled environment. Journal webbing is thicker for
more reliability. Main bearing caps are of billet steel with a
combination of 4-main studs and 2-side bolts. Crankshaft is the forged,
fully counter-weighted 8-bolt unit. This was a competition engine that
will see more HP and many more RPM's then your typical 4-valve Modular
Engine. The Road Racing aspect will subject this Engine to much more
abuse then others would ever see. Roush/Yates is a first class
organization. They build many Engines every year for some of the most
respected, and feared racing organizations in the business. There is no
one thing that makes this a great Engine. It's more a collection of
improvements that makes this the most impressive 4-Valve Engine
available.