Firebird Power Train Chart

An enhanced reproduction of the original Pontiac Sales Manual used in 1968 showrooms which described all the equipment that was available on the Firebird. This album has become a rare and valuable resource.

1968 Pontiac Sales Manual

1968 FIREBIRD POWER TRAIN CHART

Transmission
Type

Item
No.

Car Order
Engine
Code

Engine
Size
(Cubic
Inch)

Carb.

Engine
Ident.
Code

Trans.
Ident.
Code

Horse
Power

Comp.
Ratio

Standard
Axle

Econ.
Axle

Perf.
Axle

Special Order Axles

3.55(K)

3.90(P)

4.33(S)

3

S
P
E
E
D

341

250 6 Cyl.

1 Bbl.

175

9.0
Reg.
Fuel

3.55
(Exc. W/Air)

3.23
(W/Air)

3.08

342

250 6 Cyl.
(N.A. W/Air)

4 Bbl.

215

10.5
Prem.
Fuel

3.55

343

350

2 Bbl.

RJ
DD

265

9.2
Reg.
Fuel

3.23

3.08
(Exc. W/Air)

344

350 HO

4 Bbl.

RJ
DD

320

10.5
Prem.
Fuel

3.36
(Exc. W/Air)

3.23
(W/Air)

A-C-N-S

345

400

4 Bbl.

330

10.75
Prem.
Fuel

3.36
(Exc. W/Air)

3.23
(W/Air)

3.55

4

S
P
E
E
D

341

250 6 Cyl.

1 Bbl.

175

9.0
Reg.
Fuel

3.55
(Exc. W/Air)

3.23
(W/Air)

342

250 6 Cyl.
(N.A. W/Air)

4 Bbl.

215

10.5
Prem.
Fuel

3.55

343

350

2 Bbl.

265

9.2
Reg.
Fuel

3.23

3.08

344

350 HO

4 Bbl.

FF
FX

320

10.5
Prem.
Fuel

3.36
(Exc. W/Air)

3.23
(W/Air)

A-C-N-S

A-C-N-T

345

400

4 Bbl.

FF
FX

330

10.75
Prem.
Fuel

3.36
(Exc. W/Air)

3.23
(W/Air)

3.55

A-N-T

A-F-N-T

348

400 HO

4 Bbl.

FF
FX

335

10.75
Prem.
Fuel

3.36

3.55
(Exc. W/Air)

A-N-T

A-F-N-T

347

400
Ram Air

4 Bbl.

335

10.75
Prem.
Fuel

3.90
(Exc. W/Air)

A-N-T

A-F-N-T

A
U
T
O
M
A
T
I
C

341

250 6 Cyl.

1 Bbl.

LF

LH

175

9.0
Reg.
Fuel

3.23

2.56
(Exc. W/Air)

342

250 6 Cyl.
(N.A. W/Air)

4 Bbl.

215

10.5
Prem.
Fuel

3.23

2.78

3.55

343

350

2 Bbl.

MA

MC

265

9.2
Reg.
Fuel

2.56
(Exc. W/Air)

2.78
(W/Air)

2.93
(Exc. W/Air)

344

350 HO

4 Bbl.

MB

MC

320

10.5
Prem.
Fuel

3.23
(Exc. W/Air)

2.78
(W/Air)

H
Y
D
R
A
M
A
T
I
C

345

400

4 Bbl.

PX

PY

330

10.75
Prem.
Fuel

3.08
(Exc. W/Air)

2.56
(W/Air)

3.23
(Exc. W/Air)

A-N-S-T

348

400 HO

4 Bbl.

PX

PY

335

10.75
Prem.
Fuel

3.08
(Exc. W/Air)

2.56
(W/Air)

3.55
(Exc. W/Air)

A-N-T

347

400
Ram Air

4 Bbl.

335

10.75
Prem.
Fuel

3.90
(Exc. W/Air)

Engine and Axle Ratios as of 8-10-67

AXLE IDENTIFICATION
Ratio	Sales Code Col. 37	Std. Axle Code	Safe-T-Track Axle
2.56 (41:16)	C	XB	ZB
2.78 (39:14)	D	XC	ZC
2.93 (41:14)	E	XD	ZD
3.08 (40:13)	F	XE	ZE
3.23 (42:13)	G	XF	ZF
3.36 (37:11)	H	XG	ZM
3.55 (39:11)	K	XN	ZN
3.90 (39:10)	P	–	ZP
4.33 (39:9)	S	–	ZR

There are two methods of identifying the axle ratio in a car. The proper two-letter code, from the chart above, is stamped in the axle housing just to the left of the carrier case and directly below the brake pipe clip. The same code is applied to the left rear brake drum facing by means of a sticker.

	TRANSMISSION IDENTIFICATION CODES
	DD	3 Speed Manual – Floor Shift – V-8
	FF	4 Speed Manual – Floor Shift – V-8 Only
	FH	4 Speed Manual – Floor Shift – 6 Cyl. Only
	FK	3 Speed Manual – Column Shift – 6 Cyl.
	FX	4 Speed Manual – Floor Shift – Close Ratio
	FY	3 Speed Manual – Floor Shift – 6 Cyl. Only
	LF	Automatic – 1 BBl. – 6 Cyl. – N.A. W/Air
	LG	Automatic – Sprint Only
	LH	Automatic – 1 BBl. – 6 Cyl. W/Air
	MA	Automatic – 350 N.A. W/Air
	MB	Automatic – 350 HO – N.A. W/Air
	MC	Automatic – 350 and 350 HO W/Air Cond.
	PX	Hydra-Matic-400 & 400 HO – N.A. Ram Air
	PY	Hydra-Matic-400 & 400 HO W/Air Cond.
	RJ	3 Speed Manual – Column Shift – 350 & 350 HO
	RQ	Hyd. – Ram Air Only

	LEGEND

	A – Available
	C – Cooling – H.D. Radiator – Code 681 Required.
	N – Not Available W/Air Conditioning.
	S – Speedo Adapter – Code 591 Required.
	T – H.D. Safe-T-Track – Code 361 Required.

	NOTE: ITEMS C, S & T ARE EXTRA COST OPTIONS.