1928 Cadillac - GM Heritage Center

Engine
Subject
Cadillac
341
LaSalle
303-328
Specifications
Remarks
Bore.
Compression—
Average compression pressure,
low-compression cyl
inder heads
Average compression pressure,
high-compression
cylinder heads
Ratio, low-compression cyl
inder heads
Ratio, high-compression
cylinder heads
Identification marks—
Low-compression cylinder
heads
High-compression cylinder
heads
Horsepower, rated.
Piston displacement.
Stroke
CAMSHAFT
Bearing clearance
Bearings, out of round.
End-play in camshaft..
CHAINS
CAMSHAFT CHAIN
Adjustment
No. of links
Pitch
Type
Width
GENERATOR AND WATER PUMP
CHAIN
Adjustment
No. of links.
Pitch
Type
B
B
B
303
303
303
303
303
303
303
303
303
303
303
303
303
.328
328
328
328
328
303 328
303 328
303 328
303 1
303^ 328
303
303
303
303
303
328
328
328
328
328
328
328
328
328
328
328
328
3Ain.
3¼ in.
3¾ in.
90-92 lbs. per sq. in. at 1000
R. P. M.
105-107 lbs. per sq. in. at
1000 R. P. M.
4.8 to 1
5.3 to 1
No characteristic marks.
"HC-53"
"HC-53" "328" at lower
edge of head
35.0
31.2
33.8
341 cu. in.
303 cu. in
328 cu. in.
4¾ in.
New limits, .0027 to .0037 in.
Worn limit, not over .005 in.
Not over .005 in.
New limits. .005 to .015 in.
Worn limit, not over .020 in
Not adjustable
54
Hin.
645
B-45
15*in.
At the elevation of Detroit.
Low-compression cylinder heads are
standard on 341-A and 303 cars. Highcompression
cylinder heads are standard
on 341-B and 328 cars.
5.3 to I compression ratio.
Before engine unit 3-10155 on 341-A
cars and 2-17156 on 303 cars.
Beginning with engine unit 3-10155 on
341-A cars and 2-17156 on 303 cars.
Y% in. measured at top of See Note 3 in Cooling System Group,
sprocket housing
57
VT. in.
B-45
Page 43. Plate 36-, Fig. 3.
163J