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ARAO 32valve LSX
bolt on heads
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The ARAO 32v
LSX heads are a bolt on for the LS-2 or LS-7 blocks. They bolt on
using all standard head gaskets, intake manifolds, exhaust headers,
standard cams and pistons!
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ARAO Engineering has just introduced
the 32 valve LSX bolt on heads for the LS-2 and LS-7 motors. These
heads are a direct bolt on and use all standard intake and exhaust
manifolds, exhaust headers, pistons and standard camshafts.
Compression ratios can be set by just flycutting the heads from 10:1
to 12:1. The valves are operated by the standard cams, lifters and
pushrods. This is done through shaft mounted needle bearing rockers,
that operate 2 valves with one rocker arm. |
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The valves are operated
by the standard or high performance cam through pushrods, with one
pushrod operating 2 valves simultaneously through a special shaft
mounted rocker arm. The rockers are needle bearing with through
shafts on the exhaust and individual shafts on the intake rockers.
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Due to the way that 4 valves
per cylinder flows, there is a huge gain in Horsepower over a 2
valve head. To the tune of 100HP more. And this using the same
induction, exhaust, cams etc. |
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The heads come
with everything necessary to convert to 32v. Pair heads fully
assembled, pair valve covers, rocker assembly and shafts. |
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32vLSX stage II “B” heads |
$7499.00 |
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32vLSX stage III “B” heads |
$8499.00 |
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32v LSX combustion chamber face. Shows standard head bolt locations
and standard location water jacketing access holes. Uses stock head
gaskets. The two extra head studs are a special order option to be
used with the GM LSX Bowtie block with 6 studs per
cylinder. |
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32v LSX combustion chamber. 4
valves per cylinder, flat chamber. Shortest possible flame front of
any combustion chamber possible. This is a fast burn low detonation
combustion chamber, with less spark lead necessary at peak HP
levels.
Compression ratio is adjustable from 10:1 to 12:1 by just
flycutting the heads |
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The intake ports are
standard LS-7. They are a good high rectangle port with good entry
to the back of the valves. The LS-7 manifold will fit even if the
heads are used on an LS-2 block.
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Intake port flow is
405CFM @ .600” lift
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It is the way
that 4 valve heads flow that provides the performance gain. Which
is much more air flow right off of the seat. At only .100” lift,
they flow 50% more air than a racing 2 valve LS head. And it carries
this advantage in air flow all the way up to full lift. This huge
gain, or area under the curve as it is called, more fully fills the
cylinder producing the impressive torque and Horsepower gains that
is legendary with 4 valves. |
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32v valve cover from top to head gasket face is 9”.
Stock LS valve cover to head gasket surface is 7”
32v valve cover width is 6.25” width of stock cover is 4.5”
Length of head and cover is the same as a stock LS head. |
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info@araoengineering.com |
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