1968 Engine Codes & Production

Engine C.I.D.

Carb. Type

Trans. Code

Std. Code

Compression Ratio

Horsepower

400

4-BBL

3-SPD.MAN

WT

10.75:1

350

400 H.O.

4-BBL

3-SPD.MAN

WS

10.75:1

360

400

4-BBL

4-SPD.

WT

10.75:1

350

400 H.O.

4-BBL

4-SPD.

WS

10.75:1

360

400 R.A.

4-BBL

4-SPD.MAN

XS

10.75:1

360

400

4-BBL

AUTO.

YS

10.75:1

350

400

2-BBL

AUTO.

XM

8.60:1

265

400 H.O.

4-BBL

AUTO.

YZ

10.75:1

360

400 R.A.

4-BBL

AUTO.

XP

10.75:1

360


Special Note:
A 428 cubic inch motor could be ordered and dealer installed in a 68 GTO, but there were no factory built 428 GTO`s. A fully documented 428 GTO is very desirable and extremely rare. If not documented this application is incorrect.

1968 Production Totals

Hardtop

400 Ram Air (Manual)

757

400 Ram Air (Auto)

183

400 H.O. (Manual)

6,197

400 H.O. (Auto)

3,140

400 2BBL. (Manual)

0

400 2BBL. (Auto)

2,841

400 Std.Engine (Manual)

25,371

400 Std.Engine (Auto)

39,215

Total Hardtop

77,704

Convertible

400 Ram Air (Manual)

92

400 Ram Air (Auto)

22

400 H.O. (Manual)

766

400 H.O. (Auto)

461

400 2BBL. (Manual)

0

400 2BBL. (Auto)

432

400 Std.Engine (Manual)

3,116

400 Std.Engine (Auto)

5,091

Total Convertible

9,980

Total Production

87,684