we're in the power auto media shop today and we're going to be talking about
LS intake manifold these aren't just any intake manifolds
these are Holley's high RAM intakes now you may ask yourself where does that
name come from
well it's a tunnel ram design and well they're pretty high
what you basically got here is something that provides the performance of a fabricated
intake
at a cast manifold price the high ram is built as a two piece unit with
different bases and tops
and all of them have these equal length high ram style runners
now as you can tell this is not something that's going to fit under your
stock hood
it's designed for very serious engine applications we're talking like six
hundred-plus horsepower
in that range and at high rpm this is really gonna be a standout manifold one
of the things that's really cool about the system
is that the interchangeable bases and tops let you adapt it to just about any
situation
for a race motor that you would come across now for example
you can put this together in 20 different ways for the bases alone
you've got six different configurations depending on when you're running
EFI or a carbureted set up and also whether you've got LS7 style high square port
regular square port or a cathedral port engine now this is the manifold we chose
to use on our project Z
in-house drag racer which you can see behind us it's a 2000 Camaro
with 380 cubic inch
LSX based engine
it's got Trick Flow cathedral port heads on it so we chose the matching base
and a top from the Holley line when it comes to the design spec of this intake
you'll see that it's built for serious engine builders as well as performance
Street engines
the intake is 11.08 inches tall
it features 6.5 inch runners and it has a 2.77 square inch cross-section area out of the box
this intake is designed for 600 horsepower engine but
it's got plenty of room for porting if you want to run something in the thousand horsepower
plus range
now what all these have in common is that they're all designed with these
large equal length runners
and a very large volume they're all designed to work best at high rpm
and for very high horsepower applications now in the case this
manifold here
you can see that this is set up for Cathedral port heads and it's also set up
for EFI because it's got provisions drilled
for all the injectors now as you can see if your gonna port this out for race
use
it's really easy to get access to all those runners great for anybody who's
doing a true custom application
speaking of true custom one of the really nice things about this modular design
is that there are so many different tops avalible for if you're running EFI
like you would with a set up like this
you can choose tops that are set up for either a hundred and two millimeter
or 92 millimeter throttle bodies if you're running a carburetor
Holley offers two different tops this one is set up for twin 4150's they've also got a model
set up for twin dominators
an if you're trying to run something that nobodies thought of before
or how about a completely blank top that you can machine to your own specifications
for true custom configurations for EFI
applications Holley offers this cast base ring makes fabrication easy now between
all the different base
and top configurations you're looking at something that will cover anything from EFI
to carbureted to anywhere in between the main difference between
the EFI and the carbureted version is that the EFI version
is machined and ready for injectors now the bonds are still present
on the carbureted version so if you're trying to run a direct port nitrous
system
it's a perfect place to insert those nozzles now for EFI applications
Holley also provides
machine fuel rails that are set up to handle -8 plumbing
now obviously the high ram is not for everyone
if you're driving a Street Camaro it's not gonna fit under the hood
but if you've got a race car making more than 600 horsepower
and you need something that really
breathes at high rpm this is a great way to go you're going to get
cast manifold price and you're going to get fabricated manifold performance