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0-6
1949 FEATURES
1948-1949 BUICK SHOP MANUAL
(6)
NEW FEATURES OF 1949 SERIES 50-70
For ready camparison between 1948 and
1949 models, the following summary lists the
new features of the
194,9Series
50-70 on which
information is given in the indicated para-
graphs of this manual. New features which are
apparent on inspection or do not require
serv-
ice information
are not listed.
A few of the
new features
were used in
the last cars of
t
he 1948 model
production.
These are included in the summary with proper
model
identification.
.
~
Group 0, General
Specifications.
1949 Series 50 wheel base is 121" and overall length is 209
3
/8".
1949 Series 70 wheel base is 126" and overall length is
214%".
Group 2, Engine.
Series 50 Dynaflow engine
H.P .=120;
Compression
Ratio =6.9 t
o 1; Compressi on Pressure
(cranking) =118 lbs
.ysq.
in.
Replaceable
connecting
rod bearings used after
approximately
the fir st
5000 1949
engines
(par. 2-5
&
2-21).
Hydraulic valve lifters used in
last
production 194,8 S
eri es 70 and all 194,9
S
eries
50-70 Dyna-
flow
engines. Includes new camshaft, push rods, rocker arms
and
ball studs
(par . 2-2,
2-15,
2-17) .
New oil filter and diffe
rent
element. Filter outlet piped to rock
er arms to supply filte red oil t
o
valve mechanism (par.
2-6).
Cooling system capacity of Series 50 Dynaflow cars incr eased one
quart.
Group
4, Clutch, Transm
ission,
Universal Joint.
Dynaflow
Drive is
standard on Series 70 and optional
equipment
in
Ser ies 50.
Rubber boot used t
o
replace torque ball outer
retainer packing
(par
.
4-20
&
4-28)
.
Group 5, Rear Axle Assembly.
Rear axle ratio for Series 50 Dynaflow is 4.4 to 1
(par.
5-1).
Starting in last
194,8 m
odels and continued in
1949,
two rolle
r bea ri ngs support rear end of
the
pinion
(par.
5-2)
.
Strut rods attached to
spring
seats
by
3 bolts, same as 1948
Series 40 (par. 5-29 ) .
Group 6, Chassis Suspension.
Eccentricity of upper pivot pin increased to increase camber adjustment
(par. 6-16 ) .
Model
79
tir
e
size
incr eased
to
8.20" -15"
(par. 6-1).
Front and r
ea r spring
trim
dimensions
cha
nged (par.
6-17
&
6-20) .
Rear
springs moved
to
spring seats on rear side of axle housing, same as 1948
Series
40
(par 6-3)
.
Group 7, Steering Gear and Tie Rods.
Series 50 steering wh
eel
can be raised from production
set ting, but
not lower ed. Series 70
wheel can be raised or lower ed
(par.
7-5)
.
Last of 194,8 Se
rie s
70
steering
gears have ratio of 23.6 to 1;
same for 1949
(par. 7-1).
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