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In an attempt to be different
for the better, this TSF twisted Wedge head
changed the valve angles from 23 degrees to 13
degrees. The really big difference here is what
the exhaust side of this head is capable of.
Only one other head (AFR 210) was even close on
the exhaust side. The E/I was also a very
respectable 77%. This head really can wake up
your engine.
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This head really has some
respectable E/I numbers from 0.050 up to
0.300-inch lift. This head can be configured in
many different ways, such as straight or angled
plugs, 2.02 or 2.05-inch intake valves, 1.60 or
1.65-inch exhaust valves, and in 64cc or 72cc
chamber sizes. This head comes with a lot of
options if your one of those types who likes to
design their own
combination.
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World Products Sportsman II
Iron
|
World Products has been
around for a long time and there is no
replacement for experience. The 0.400-inch lift
numbers are right in line with the rest of the
heads on the market but the cost is considerably
less than some of the others. Another great
feature here is that these heads carry a
50-state E.O. part number, which means they can
be put on smog motors.
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Production LS1 Aluminum
Head
|
GM won’t be left out of
category 3 with these heads. This head has great
0.400-inch lift numbers as well as a good E/I
ratio. They also feature a more flat valve angle
(15 degrees) in order to promote a better
combustion chamber that’s shaped like a kidney
to help direct combustion and reduce possible
detonation. Remember that this head will not
interchange with pre-‘93 small-block
heads.
|
AirFlow Research 210 Aluminum
Head
|
Here is an extraordinary
head. It has larger intake ports but with 240cfm
at 0.400-inches of lift who cares? The E/I ratio
is an incredible 75% making it hard to find
anything wrong with these heads. This head may
be a little much for a mouse motor but it is
perfect for a big mouse somewhere in the 383
inch range up.
|
Brodix Track 1 Aluminum
Head
|
The Track 1 head may be down
on the numbers at 0.400-inch lift but it’s
really competitive once it sees the 0.500-inch
lift point. Add some short-side radius work and
wow you’ve got a killer head. If you have a set
of these heads there’s definite
potential.
|
Edelbrock Victor Jr. Aluminum
Head
|
This is an impressive head.
It features a kidney shaped combustion chamber
keeping the combustion moving, the flow is
awesome from 0.400-inches all the way up to our
tested 0.700-inches, and the E/I ratio is an
amazing 81%. We see a head that flows some
serious air and likes high lift roller
cams.
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This head really likes to
flow at lifts above 0.500-inches. The E/I ratio
at 0.400-inch is a very good 72% and 68% at
0.500-inches. This head comes machined for both
center-bolt and perimeter-style valve covers.
The Conquest can be optioned with 200 or 220cc
intake ports, valves up to 2.08/1.60, and in 64
or 72cc chamber sizes.
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The Dart Iron Eagle head here
offers a budget alternative to the aluminum
Conquest head. With similar flow numbers the
only real big difference here is iron verse
aluminum and cost. This head is offered in 200
or 220cc intake ports and with 2.02 or 2.05-inch
intake valves.
|
Brodix -11X 220 Aluminum
Head
|
Brodix offers this
large-port, 23-degree valve angle, small-block
head as one of its largest ports in the stock
valve-angle lineup. The low lift numbers are
down a bit but in comparison to some of the
others once the lift numbers increase you can
see there is some serious airflow. These come
available with minor or major port work
depending on how you order
them.
|
Dart Pro 1 Aluminum
215cc
|
This is perhaps one of the
most versatile heads out there. While the low
lift numbers don’t stand out, the higher lift
numbers are on par with the rest of the heads on
the market. This head is definitely best on high
winding motors where consistent rpm is what wins
a race.
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Canfield 220 Aluminum
Head
|
This race oriented
small-block head requires the use of 0.150-inch
offset intake rocker arm to accommodate the
repositioned intake valve. The idea of spreading
the valves apart is to increase valve diameter
and improve flow. This head has 2.08/1.60-inch
valves and probably works best on larger
displacement mouse motors around 383-plus cubic
inches.
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The Brodix -1x heads feature
a 40/60 valve spacing, meaning the centerline of
each valve has been moved away from its standard
location to accommodate a larger diameter valve
and move both valves away from chamber walls for
unshrouding. This means special offset shaft
mounted rockers are needed and available from
Brodix. It seems like a lot of R & D went
into these bad boys and the numbers show
it.
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These heads can be purchased
from Air Flow Research in many different intake
port sizes. They are available with 180, 200,
220, and 235cc intake ports. They also feature a
64cc and 72cc chamber for your desired
compression levels.
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This is the largest of the
Dart Iron Eagle series heads. They perform best
on motors above 400ci-inches and with cam lifts
above 0.500-inches lift. The E/I ratio is
acceptable and the castings are made of good
quality. These heads flow well and do not really
require too much handwork to improve
airflow.
|
Pro Action Iron 235 Iron
Head
|
These are the largest of the
Pro Action lineup. The heads are advertised as
235cc intake ports but in our testing we found
them to be 245cc’s. These heads are definitely
for use on big mouse motors that like to see
some
rpm.
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