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Buy with confidence!
If for any reason
you're not
completely satisfied
with an item, simply
return it within 7
days and the
purchase price will
be refunded.
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We ship world wide.
All international
orders must be paid
online. Checks or
money orders drawn
on non-US banks will
not be accepted.
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Edelbrock Quadrajets
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For decades the Edelbrock company has made aluminum heads, intake manifolds, carburetors,
and other accessories for the high-performance market. It offered both replacement and high-
performance Quadrajet carburetors for many years. The replacement units were limited to several
basic styles, all with side fuel-inlet locations and both electric and divorced chokes.
For high-performance use, Edelbrock offered their “RPM” Q-jet. It was the first and only true high-
performance Quadrajet ever offered in large production by an aftermarket manufacturing facility.
Based on the late Chevrolet castings, they featured a host of upgrades to the standard units.
Edelbrock rated them at 850 cfm for powering engines over 450 hp.
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The only aftermarket high-performance
Quadrajet produced on a large scale was the
Performer RPM Q-jet from Edelbrock. The part
number for the RPM Q-jet is 1910. These units
featured a host of high-performance
modifications, generous idle-fuel calibrations
and were advertised as 850 cfm. The RPM
Q-jet was only offered in a side fuel-inlet
model. It is based on the late-style large
primary bore Chevrolet castings and came with
an electric choke to make it easy to retrofit to
almost any application.
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Here our RPM Q-jet is shown
disassembled for inspection.
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Edelbrock installed a high-performance fuel inlet seat with a hole diameter of .149 inch. The
accelerator pump had a shortened shaft and stiff duration spring for maximum fuel delivery. They
featured a stiff spring under the pump to help return the throttle to the closed position. They would
use the late-style “M” primary metering rods, small float and quick opening choke pull-off. The full
open angle of the secondary air flaps was set at 1.270 inches, as measured from the leading edge
of the flaps to the rear of opening in the casting.
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Rated at 850 cfm, the air flaps open to
a full-open point of 1.270 inches as
measured from the leading edge of the
flaps back to the opening in the air
horn as shown.
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The secondary air flaps also received two additional holes and two small tabs to help with air
distribution into the secondary throttle bores.
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The secondary air flaps contain round
holes and “tabs.” The round holes are
located inboard and on the front half of
the air flaps. They allow some fuel to
be pulled into the engine from the
accelerating holes located just above
the air flaps. The “tabs” on the rear
portion of the air flaps are designed to
help air and fuel distribution into the
carburetor at full throttle.
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The basic castings used were identical to the later Chevrolet side-inlet large primary-bore
carburetors, using the late-style adjustable part throttle (APT) system and float arrangement.
They used a single pair of main air bleeds in the air horn, and the upper idle air bleeds were in the
main casting just above the idle channel restrictions.
They came with an electric choke as standard equipment to make them more universal. The
standard late-style Chevrolet throttle linkage was used, with several provisions for installing throttle
cable hook-ups and a lower location for return springs and a transmission downshift linkage.
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The Adjustable Part Throttle (APT) screw is
slotted so it can be adjusted with a small flat-tip
screwdriver.
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A removable set screw is located in the air
horn just above the APT screw. This allows
easy access to the APT for quick, fine
adjustments without taking the carburetor
apart.
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The RPM Q-jet is based on the later-style
single main air-bleed design. The single pair of
main air bleeds is located in the air horn and
extend at an angle into the incoming air stream
on the primary side of the carburetor.
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The RPM Q-jets were equipped with electric
chokes. This makes them more universal and
can be easily retrofitted onto earlier engines
originally set up for divorced chokes. As with
most late-model emission-years carburetors
that used an electric choke, the choke held in
place with rivets to prevent tampering. The
rivets can be removed and the choke housing
tapped for screws if adjustments are required.
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Previous
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This has been a sample page from
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How to Rebuild and Modify
Rochester Quadrajet Carburetors
by Cliff Ruggles
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The Rochester Quadrajet carburetor was found perched atop the
engine of many classic GM and Ford performance vehicles. The
Q-Jet is a very capable, but often misunderstood carb. This book,
How to Rebuild and Modify Rochester Quadrajet Carburetors,
seeks to lift the veil of mystery surrounding the Q-Jet and show
owners how to tune and modify their carbs for maximum
performance. A complete guide to selecting, rebuilding, and
modifying the Q- Jet, aimed at both muscle car restorers and
racers. It includes a history of the Q-Jet, an explanation of how the
carb works, a guide to selecting and finding the right carb,
instructions on how to rebuild the carb, and extensive descriptions
of high-performance modifications that will help anyone with a
Q-Jet car crush the competition.
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Click below to view sample
pages from each chapter
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Chap. 1 - Quadrajet History
Chap. 2 - How Q-Jets Work
Chap. 3 - Carb Selection
Chap. 4 - Tools & Safety
Chap. 5 - Q-Jet Rebuilding
Chap. 6 - Performance Mods
Chap. 7 - Edelbrock Q-Jets
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"Unlike some tech books you've probably seen, this one does a
good job on the photography, with all color photos shot with good
lighting, clear details, and clean backgrounds." -Musclecar
Enthusiast, October 2006, reviewed by Steve Statham
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8-1/2 x 11"
Softbound
128 pages.
Approximately 300 color photos
Item: SA113
Price: $22.95
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Click here to buy now!
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This is a great book
anyone with a
Quadrajet will love!
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Other items you might be interested in
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Holley - Rebuilding and Modifying
This unique book takes you step-by step through disassembly, parts
inspection, modification, reassembly, installation, and on-car tuning of
all popular Holley modular carburetors. This hands-on guide includes
clearly labeled steps, hundreds of detailed photos, and easy to
understand instructions that make working on Holleys as simple as
1-2-3.
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Price:
$18.95
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How to Rebuild and Modify Carter/Edelbrock Carburetors
Author David Emanuel outlines carburetor types, gives a thorough look
at carb selection and carb function, and offers detailed information on
modifications, tuning, and rebuilding Carter/Edelbrock carburetors.
Also features the history of Carter as well as the history of the AFB
and the AVS since the purchase by Edelbrock. Contains more than
300 color photos, illustrations, and diagrams.
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Price:
$22.95
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Super Tuning and Modifying Holley Carburetors
Super Tuning and Modifying Holley Carburetors shows you how to
select, install, tune, and modify all popular Holley performance
carburetors. This book gives a detailed view of basic carburetor
functioning, modifying for performance applications, custom tuning for
street, racing, off-road, turbocharging, economy, and other special
uses.
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Price:
$18.95
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Shipping is combined and discounted for multiple item purchases!
Buy more and save on shipping!
We ship Worldwide! See International Shipping for more information!
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Search Our Store for More Great Ford, Lincoln & Mercury Items!
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FAST AND EFFICIENT SERVICE
We believe customer service and online retail can coexist. Our policy is to treat customers the way
we would like to be to treated. We strive to describe all items correctly. You have many options
online, but we believe our service is the best. We work around the clock to fill orders and ship items
within one business day. It is our goal to serve the customer before, during and after the checkout
process. Why gamble with your money and purchase from other sellers? We look forward to doing
business with you now and in the future.
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FAST SHIPPING
Items usually ship within one business day of receipt of payment! We keep large quantities on hand
and have a state of the art inventory management system to ensure your items are in stock and
ready to ship.
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YES, WE HAVE A RETURN POLICY
Satisfaction is guaranteed. Our store has a NO HASSLE RETURN POLICY within 7 days of
purchase. Your exchange will be processed upon receipt. If you are not satisfied with your
purchase, our knowledgeable team will do their best to make sure you get what you are looking for.
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QUALITY AND AFFORDABILITY
Why pay retail when you can save money and benefit from our purchasing power? We stock large
quantities to get you the best prices and assure the item you order will be in stock and ready to
ship. We have a COMBINED SHIPPING incentive whereby each additional item adds $1.95 to the
s/h. The more you buy, the more you can save!
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SHIPPING
Standard shipping is a flat rate of $4.95 to anywhere in the United States with USPS Media Mail.
Priority Mail shipping is available for an additional $3.00, or $7.95 shipping. Shipping is combined
and discounted for multiple items purchases as follows: first item regular price shipping, add $1.95
for each additional item.
INTERNATIONAL SHIPPING
We ship to Canada and Mexico with Priority Mail International for $10.95, and to most locations in
Europe, Australia, Asia, Japan and South America for $14.95. Shipping is combined and discounted
for multiple items purchases as follows: first item regular price shipping, add $1.95 for each
additional item. All international orders must be ordered and paid online, as we can no longer
accept checks or money orders drawn on non-US banks.
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PAYMENT & SALES TAX
We accept Paypal, Visa, Mastercard, Checks and Money orders. Paypal is the preferred form of
payment. Our online shopping cart system is powered by PayPal, the most secure way to send
payment online. Iowa residents must add 7% sales tax.
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If you have any questions or comments please feel free to contact us. We look forward to serving
you and fulfilling your needs.
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Thanks for your business!
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MRE
PO Box 47
Grinnell, IA 50112
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