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Dual
Distributor Holddowns |
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Sometimes
the standard single distributor  holddown
is difficult to access. So we have provided
dual distributor holddowns on all Chevy
intake manifolds, which gives you an
optional position. And on our
52030
and 52031
Racing Manifold, you can use two holddowns
for extra protection against distributor
rotation. |
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| If
you want to run nitrous with the
injectors mounted directly in
the ports, our manifolds provide
a simple solution. Many of our
manifolds include cast-in nitrous
bosses which provide the extra
thickness not found in most competitive
manifolds without spending a lot
more money. This extra thickness
is necessary to provide the proper
amount of thread engagement. All
you have to do is drill and tap
the bosses to accept any manufacturer's
nitrous injectors. |
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The
Professional Products #52030/52031 Manifold
is designed for both racing and street
applications.
 It
has all the necessary bosses and tapped
holes to accommodate street accessories
yet it also includes every feature found
in manifolds costing hundreds more.
One trick feature is the Water Divider
Baffle. Expensive race manifolds have
this baffle cast in place in the manifold
but this precludes the use of a thermostat
if you want to use one. Our manifold
is machined for a thermostat but the
package also includes a drop-in Water
Divider Baffle for those who desire
this feature. |
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Many
Chevy manifolds accept the stock Rochester
Quadra-Jet spread-bore carb. But if
you want to use one of the popular
Holley or Edelbrock square bore carbs,
you have to spend more bucks for a
carb adapter plate. Our manifolds
with spread- bore patterns include
steel adapter plates and gaskets to
accept square bore carbs. Included
with manifold. |
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All
of our performance manifolds feature
two extra water ports at the rear of
the manifold, a
feature normally only found in manifolds
costing hundreds more. Some enthusiasts
have found that plumbing a line between
these two rear ports can reduce engine
overheating. Many racers also find these
ports to be an advantageous special
feature for plumbing special additional
water lines. |
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Special
Manifold Adapters |
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 All
Power+Plus Street and High Performance
Street Manifolds
for small block Chevys
come with special adapters that allow
these manifolds to fit the '87-'95 cast
iron heads. If you have '86 or earlier
heads, or '87-'95 aluminum heads, our
manifolds bolt right on without the
adapters. For '87-'95 cast iron heads,
drop the adapters in the four slotted
holes and bolt up the manifold with
no fuss and no special tools required. We also now supply (4) straight bushings when used
on non-angle style cylinder heads. |
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