Past Projects
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Heartthrob Exhaust 2007 GM Silverado Project Truck
Our 2007 GM Silverado was featured on
several episodes of Truck U on Speed
Channel. This truck features GM's displacement on demand
5.3L engine. A special thanks to the team at Truck U, and
the generous contributors for the great products we will be
adding
to this vehicle. We also displayed this vehicle at the
2007
SEMA show in Las Vegas.
This was a tricky
one to get a good sound out of. We tested dozens of
designs
of mufflers to find just the right combination. We needed
something that flows better than o.e. and gives a nice
performance
sound. This was not hard to do. What was difficult,
was getting the vehicle to have a nice sound when it is up to
speed, the engine is warmed up, and running in 4 cylinder mode,
with the displacement on demand system engaged. If you can
imagine your muscular sounding V8 pickup all of a sudden
sounding
like a sport compact 4 cylinder car with the big muffler and tip
on it, you get the picture. Through dozens of hours in
muffler design, flowbench testing, and road testing for sound,
we
came up with a specially-tuned muffler for the displacement on
demand engines. (All 2007 new body style Silverado 5.3L
pickups have the displacement on demand system). The sound
in 8 cylinder mode in the cab is a little more aggressive than
o.e., and more noticeable at the tail pipes. In 4 cylinder
mode, a small change in pitch is noticed, a little more than the
o.e. pitch, but very liveable and not annoying. In all
honesty, we were hoping for a little bit more aggressive sound
inside and at the rear, but through extensive sound testing,
found
the quieter sound to be much more liveable in the cab when in 4
cylinder mode. We felt this would be a better product.
Click on the
following link to see pictures of the kit installed at our shop
on
this vehicle: http://www.heartthrobexhaustinc.com/2005820p.html
Here are some pictures of the truck to see how it started life as:
Heartthrob Exhaust--split
rear cat-back dual system
JBL/Infiniti/Harmon Kardon--sound
system, including; drive &
play, 2-portable device interface, amp, and speakers
Steffens Enterprises--
Style Step running boards that won a best new
accessory award at SEMA. They also make tonneau covers and
truck bed cargo organizing systems. They will be featuring
all
three in association with this build up.
Precision Grilles--custom
grill
BDS Suspension--suspension
lift kit
Bushwacker--fender flares
Volant Performance--cold
air intake
Just before loading for SEMA 2007:
