1966 Engine Codes & Production

Engine C.I.D.

Carb. Type

Trans. Type

Std. Code

Calif. Code

Compression Ratio

Horsepower

389

4BBL

MAN

WT

WW

10.75:1

335

389

4BBL

AUTO

YS

XE

10.75:1

335

389

3X2

MAN

WS

WV

10.75:1

360

389

3X2

AUTO

YR

YR

10.75:1

360

389

3X2

MAN(RA) 1

XS

XS

10.75:1

360

Special Notes:
1 Although never shown in production figures there were approximately 25 to 35 factory built 1966 Ram-Air GTO`s (XS package). It is estimated that 300 dealer Ram-Air packages were sold for 66 GTO`s. A 421 cubic inch motor could be ordered and dealer installed in a 66 GTO, but there were no factory built 421 GTO`s. A fully documented 421 GTO is very desirable and extremely rare. If not documented this application is incorrect.

1966 Production Totals

Convertible

12,798

Coupe

10,363

Hardtop

73,785

Total Production

96,946

389 3X2

19,045

389 4BBL

77,901

Manual

61,279

Automatic

35,667