OLDSmobility.com - The 1967 Oldsmobile Cutlass and 442 Resource - Oldsmobile Transmission Gear Ratio and Transmission Identification

Oldsmobile Transmission
Identification and Gear Ratios

Other model series transmissions are included on this page, in the event your original transmission was, at some time, swapped for a different version. All listings ARE still for the '67 model year, however.

Jetaway Transmission Code Location Jetaway Transmission

Transmission MODEL and CODE NUMBERS are stamped on the servo cover (see graphic at right). The first two digits represent the model year, the next two letters represent the transmission model (see table below) and the last three numbers are the sequential production numbers.
Example: 67 LC 001

Model	Series and Engine Usage
LC	L-6 in 33300 and 33500 Series (Fixed Stator)
ML	V-8 330 cu. in. 2-bbl. in 33400, 33600 & 33800 (Except V.C.)(Variable Stator)
MK	V-8 330 cu. in. 4-bbl. in 33400, 33600 & 33800 except with L-77 or L-78 opt. (Variable Stator)
MT	V-8 330 cu. in. 2- & 4-bbl. in 35200 Series (Delmont 88)

NOTE: From 64-67, you often found variable pitch torque converter automatic transmissions on Cadillac, Buick, Olds. Racers call them "switch-pitch" transmissions. Basically, there's a little stator turbine in between the two main turbines of the converter. The angle (pitch) of the stator blades is changed electronically. This changes the flow of fluid, thus changing the stall speed of the converter.

There are two settings: high stall and low stall. This was a design used to get those big cars moving faster. At idle or full throttle, the high stall setting kicks in, giving smooth idle or greater acceleration. At just off throttle, the low stall speed is set for better mileage during normal driving.

GM discontinued the idea due to high cost. There are still some aftermarket converter makers who sell converters for these transmissions for racers and such.

Turbo Hydra-Matic Serial Number Location Turbo Hydra-Matic Transmission

The Turbo Hydra-Matic serial number is stamped on a plate located on the right side of the case (see graphic at right). The first two digits represent the model year, the next two letters represent the transmission model (see table below) and the last three numbers are the sequential production numbers.
Example: 67-OB-1402

Starting Serial No.	Series or Engine Usage
67-OA-1001	3465, 3855, 3865 Series, 2- and 4-bbl.
67-OB-1001	5400, 5600, 5800, 8400 & 8600, All Bbl. except L-65, L-90, L-75, L-77
67-OC-1001	5400, 5600, 5800 V-8 2-bbl. with L-65, L-90
67-OD-1001	5400, 5600, 5800, 8400, 8600, V-8 with L-75
67-OE-1001	5600, 5800 V-8 with L-77, 5400, 5600, 5800, 8400, 8600 V-8 2- and 4-bbl. ALL HEAVY DUTY
67-OF-1001	5200 V-8 2- and 4-bbl.
67-OG-1001	3400, 3600, 3800 V-8 4-bbl. with L-77, L-78 (except 3465, 3667, 3855, 3865 & L-66)
67-OH-1001	3807, 3817 &3867 with L-66
67-OJ-1001	9400 & 9600 V-8 4-bbl.

Transmission Availability

Transmission Controls	Cutlass Supreme	Cutlass	F-85
Column Shift
Turbo Hydra-Matic, Reg. (M40)	Available (1)	-	-
Turbo Hydra-Matic, H.D. (M41)	-	-	-
Jetaway, Reg. (M33) (M31)	Available (2)	Available (3)	Available (3)
Jetaway, H.D. (M34)	Available	Available (4)	Available (4)
3-spd Man., Reg.	Standard	Standard	Standard
3-spd Man., H.D. (M13)	Available	-	-
Console Shift (6)
Turbo Hydra-Matic, Reg (M40)	Available (5)	-	-
Turbo Hydra-Matic, H.D. (M41)	-	-	-
Jetaway, Reg. (M33)	Available (2)	-	-
Jetaway, H.D. (M34)	Available	-	-
3-spd Man., H.D. (M13)	Available (5)	-	-
4-spd Man. (M20) (M21)	Available (7)	Available (7)	-
Floor Shift
3-spd Man., H.D. (M14	Available	Available (4)	Available (4)
4-spd. Man. (M20) (M21)	Available (7)	Available (7)	Available (4,7)
(1) With 4-4-2 Performance Package (L78) included in Turnpike Cruising Package (L66) (2) Except Jetaway Regular (M33) not available with 4-4-2 Performance Package (L78) (3) Fixed-Stator Jetaway (M31) with Action-Line 6 Engine (4) V-8 models		(5) With 4-4-2 Performance Package (L78) (6) Restricted to cars with bucket seats (7) Wide gear ratios (M20); special gear ratios (M21)

*Manual Transmission Identification*
Type	Series	Code R.H. Side of Case	Option Code
3-Speed	3300, 3500 L-6 Column Shift	QP	-
3-Speed	3400, 3600, 3800 Column Shift	RJ	-
3-Speed Heavy Duty	3400, 3600, 3800 V-8 H.D. Floor Shift (Except 3435, 3465, 3635, 3855, 3865)	DB	M-14
	3400, 3600, 3800 V-8 H.D. Column Shift (Except 3435, 3465, 3635, 3855, 3865)	DB	M-13
	5200, 5400, 5600, 5800 V-8 Column Shift	DA	-
4-Speed	3400, 3600, 3800 Floor Shift (wide ratio)	HP (Top of Case)	M-20
4-Speed	3400, 3600, 3800 Floor Shift (close ratio)	HF (Top of Case)	M-21

*Manual Transmission Ratios*		Cutlass Supreme, Cutlass V-8, F-85 V-8	Cutlass Six, F-85 Six
3-Speed Column-shift (Standard)	First	2.54-to-1	2.85-to-1
	Second	1.50-to-1	1.68-to-1
	Third	1.00-to-1	1.00-to-1
	Reverse	2.63-to-1	2.95-to-1
Heavy-duty 3-Speed Floor-Shift (M41) (1)	First	2.42-to-1	N/A
	Second	1.61-to-1
	Third	1.00-to-1
	Reverse	2.33-to-1
4-Speed Floor-Shift (M20)	First	2.52-to-1	N/A
	Second	1.88-to-1
	Third	1.46-to-1
	Fourth	1.00-to-1
	Reverse	2.6-to-1
Special Ratio (Close Ratio) 4-Speed Floor Shift (M21)	First	2.20-to-1	N/A
	Second	1.64-to-1
	Third	1.28-to-1
	Fourth	1.00-to-1
	Reverse	2.27-to-1
Clutch (Diameter / pressure-spring type)	Standard	10.4" / Flat	9.12" / Flat
Clutch (Diameter / pressure-spring type)	Heavy-duty (M01)	11.0" / Flat	N/A
(1) Except Station Wagons

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This page last modified on April 05, 2008.