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ROCHESTER CARBURETORS Bulletin 9D-8-57
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BULLETIN 9D-8-57
12-1-56
FILE AFTER 9D-8 BC-BASIC MODEL
MANUAL
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ROCHESTER
CARBURETORS
MODEL BC 1957 DESIGN
CHANGES
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ROCHESTER PRODUCTS
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APPLICATION
CHEVROLET
Syncromesh "6" —
7009657 Powerglide "6"—
7005656
G.M. of CANADA
Pontiac "6"
Syncromesh — 7010516 Pontiac "6" Powerglide — 7010517
DESCRIPTION OF CHANGES
APPEARANCE:
The Model BC
Carburetors for 1957 incorporate a new low air horn design, to
facilitate lower hood styling. Along with decrease in height, air horn
construction has been altered to include ,a center stud hole for
simpler and more positive air cleaner mounting ing. A larger fuel
inlet is used with a pressed bead type strainer installed under the
fuel inlet nut. The new type strainer can be easily removed for
cleaning and will give improved fuel filtering,
OPERATION:
A new type power
piston is used this year with a solid stem for more support to
eliminate any possibility of the end flaring.
With the exception
of minor calibration changes to meet new engine requirements the
carburetors are the same in operation and adjustment as the 1956
Models.
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CO, WO, 131,
132:1-2-9-12-16, 9X, 9FR
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Printed in U.S.A. R. P. Form No. 1211 I.P.S.
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