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1908 CADILLAC Cadillac Index
Cadillac fielded five models: Model G, Model H, Model M, Model S, and Model T.

CADILLAC - MODEL G

1908 Cadillac Model G Limousine


MODEL G ENGINE
DescriptionFour cylinder, L-head Individual cast iron cyl., copper water jacket
Bore & Stroke4 x 4.5 in.
Displacement226.2 cu. in.
ALAM H.P.25.6 hp
Advertised H.P.25 hp
Main bearingsFive
Valve liftersmechanical
Carburetorthrottled float feed, jet type made by Cadillac


CHASSIS
Wheelbase100 in.
Front/Rear tread56 in.
Tire32 x 3.5 (34 x 4 limo)


ENGINE
DescriptionCylinders cast singly, copper water jackets, detachable combustion valve chamber
Main bearingsreplaceable without removing crankshaft
Valvesinterchangeable inlet and exhaust valves operated by push rod & roller cam follower on single gear driven camshaft
Accessoriesbelt driven fan, water pump, and oiler; splash lubrication
Suspensionthree point engine suspension
Crankingclockwise cranking
Carburetorfloat feed carburetor controlled by foot throttle or automatic ring-type governor; jet type carburetor made by Cadillac
Transmission typeselective sliding gear transmission, independently attached to frame

1908 Cadillac Model S runabout with rumble seat

The MODEL H for 1908 was the same as the 1907 Model H except the coupe body was dropped from the line. Also the touring body was now similar to the Model G with continuous molding across the center of the doors. The model H no longer supplied an engine speed governor or the interlock between brakes and clutch. Tire size increased to 34 x 4.

The MODEL M was built only as a delivery vehicle. It was the same as the 1907 delivery except that prices now included two oil side lamps, an oil tail lamp, and a bulb horn. Headlamps were not included as standard equipment on Cadillacs until 1910. Also it did not have the longer wheelbase or running boards found on the Model S or Model T.

1908 Cadillac Model S runabout

The MODEL S has the same chassis as the 1907 model except the wheelbase on all body styles increased to 82 in. and full running boards replaced the step plates. Single and double rumble seat options were available on the straight line or Victoria styles runabouts. If rumble seat passengers were to be carried regularly, it was recommended that tire size be increased from 30 x 3 to 30 x 3-1/2.

The MODEL T has the same chassis as the Model S except the coupe did not have running boards. The bodies were the same as the 1907 Model M except the folding tonneau was dropped. The Victoria style top was now available for the tonneau of the Victoria Touring.

I.D. DATA
Model G & H serial numberson plate on rear of body or on dash (with engine no.);
engine numbers were stamped on top surface of crankcase
- in front of and to the left of number one (front) cylinder.
Model G engine no.30426-30500 (1907- 1908), 30501-31032 (1908)
Model H engine no.10201-10709 (1906-1908).
Model M, S & Tserial numbers on plate on rear of body (with engine number.
Engine numbers were stamped two places on crankcase:
1. Top, right edge of cylinder flange, near water outlet.
2. Top surface of left, front mounting leg.
Also on plate on rear of body (with serial number).
(Blank spaces on patent plate are for additional patent dates, not engine or serial number.)
Model M engine no.24075-24350 with K, S. T (1907).
Model S engine no.24075-24350 with K,- M, T (1907), 24351-25832 with T.
Model T engine no.24075-24350 with K. M. S (1907), 24351-25832 with S.


Body Type & Seating Price
Model G
2-dr. Tr.-5P$2000
2-dr. Limo.-5P$3000
Runabout. - 3P$2000
Runabout - 4P$2025
Model H
2-dr. Tr.-5P$2500
2-dr. Limo. - 6P$3600
Runabout - 2P$2400
Model M
Delivery - 2P$950
Model S
Straight Line Runabout - 2P$850
Vic. Runabout. - 2P$850
Vic. Runabout w/single rumble$875
St. Line Runabout w/double rumble$885
Model T
2-dr - St. Line Tr. - 4P$1000
2-dr. Vic. Tr. - 4P$1000
2-dr. Coupe - 2P$1350


ENGINE
-Model HModel GModel M, S, T
Engine typeVertical, in-line, L-head. Four. Individual cast iron cyl., copper water jacket.Horizontal, with cylinder to rear. One cylinder. Cast iron cylinder, with copper water jacket
Bore & stroke4.375 x 5.00" 4.00 x 4.50"5.00 x 5.00"
Displacement300.7 cid226.2 cid98.2 cid
Brake HP--"Higher than advertised or calculated"
ALAM HP30.62525.610
Advertised HP302510
Main bearings552
Valve liftersmechanical
Carburetorthrottled, float feed, jet type made by CadillacUpdraft mixer manufactured by Cadillac


CHASSIS
-Model M DeliveryModel SModel T TouringModel T CoupeModel GModel H
Wheelbase76 in.82 in.82 in.82 in.100 in.102 in.
Front/Rear Tread56 in.56 in. (61 in. opt.)56 in. (61 in. opt.)56 in. (61 in. opt.)56 in.56.5 in.
Over all length-10' 1"10' 2"---
Height-5' 4"5' 4"- --
Tires30 x 3-1/230 x 330 x 3- 1/230 x 3-1/232 x 3-1/2 (34 x 4 limo)34 x 4

TECHNICAL

Model G
TransmissionSelective sliding gear transmission
Speeds3 Forward, 1 Reverse
Drive controlRight-hand drive with controls to the right
ClutchLeather faced cone clutch
DriveShaft drive
AxleLive axle, bevel drive
DifferentialSpur gear
BrakesMechanical brakes on two wheels; service and emergency brakes on rear drums
WheelsWood artillery wheels, 10 spokes front, 12 spokes rear
Touring & Roadster Wheel size25 in.
Limo wheel size26 in.


Model H
TransmissionPlanetary transmission
Speeds3 Forward, 1 Reverse
Drive controlRight-hand drive with controls to the right
ClutchTwin disc in flywheel, disc and three bands on transmission
DriveShaft drive
AxleLive axle, bevel drive
DifferentialBevel differential
BrakesMechanical brakes on two wheels; service and emergency brakes on rear drums
WheelsWood artillery wheels, 12 spokes front, 12 spokes rear
Wheel size26 in.


Models M, S, and T
TransmissionPlanetary transmission
Speeds2 Forward (3:1 and 1:1), Reverse (3:1)
Drive controlLow (foot pedal), reverse & high (lever to the right)
Clutchdisc clutch
DriveChain drive
DifferentialSpur gear
Overall ratio3.1:1 to 5:1
BrakesMechanical brakes on two wheels; contracting on inboard drums
WheelsWood wheels, 12 spokes
Model M and T wheel size23 in.
Model S wheel size24 in.


Drivetrain Options: On the models M, S & T, different combinations of 9 or 10 tooth driving sprocket with 31, 34, 38, 41, or 45 tooth driven sprocket gave ten possible ratios from 3.1:1 to 5:1.

9

10

31

3.44

3.10

34

3.78

3.40

38

4.22

3.80

41

4.56

4.10

45

5.00

4.50


Lower ratios for runabout to be run on smooth, level roads to higher ratios for loaded Delivery to be run on rough, hilly roads. Instructions for changing sprockets were furnished by owners, but the change involved disassembly of the transmission and rear axle - definitely not a "quick-change" set-up.

OPTIONS
Model G: Headlights. Rubber, leather, and mohair tops in three-bow, cape cart, and victoria styles$90.00 to 200.00
Model H: Headlights. Lined Cape Cart top for Touring$150.00
Model S: Headlights. 30 x 3-1/2 tires on Runabouts with rumble$50.00
Model S: Rubber top with side curtains & storm apron$60.00
Model S: Leather top with side curtains & storm apron$80.00
Model S: Victoria style top (factory installed only)$175.00
Model S: Storm front w/windows to replace storm apron$15.00
Model T: Headlights. Cape Cart top$115.00
Victoria style top (factory installed only)$175.00

HISTORICAL NOTES

The model G was introduced in November, 1907. Calendar year sales and production was 1030 (1907-1908). Model year sales and production: same. The President of Cadillac was C. A. Black.

Note: The bulky, complicated, planetary transmission luxury fours were too great a first leap from the single cylinder, which had become passe. The compromised Model G design formed a solid basis for the "Thirty," which was to be the single line for Cadillac through 1914. Had the Brush design concepts been perpetuated, the company might well have failed. Its move into a firm position in the luxury car field was to wait another seven years.

The model H was introduced in June, 1907. Calendar year sales and production: 509 (1906- 1908). Model year sales and production: same.

Note: This was the last year for the planetary transmission fours and the counterclockwise cranking for Cadillac. The only remaining Brush features were the copper water jacket and the splash lube system; both of these were in use by Cadillac through 1914.

The model M was introduced in 1906. Model year production was included with the 1907 figures.

The models S & T were introduced on Nov. 1907. Calendar year sales and production: 1482 with S & T. Model year sales and production: same.

Note: Several hundred of the approximately 16,000 single cylinder Cadillacs produced still exist in the hands of collectors all over the world. A prominent Australian collector visiting Hershey remarked, "Anyone wanting to restore, drive, and enjoy a one cylinder car had best find a Cadillac" -- no argument, mate.

NEXT: History of the 1909 Cadillac

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