Skip to main content

SX455

The official club for enthusiasts of the

Oldsmobile Cutlass Supreme SX

 

HomeProduction Numbers
..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... .....

SX Production Numbers as of November 2016

Year

Hardtops
(style 4257)

Convertibles
(style 4267)

Total for
Both Styles

1970*

6,404

793

7,122

1971

1,820

357

2,177

Total for
Both Years

8,224

1,150

9,374

 
 
 
 
Year  Options   Notes
 1970 Cutlass Supremes with SX Option Y79  7,122  Holiday Coupes & Convertibles 
 1970 Cutlass Supremes with Engine L33 6,724  Holiday Coupes & Convertibles & Holiday Sedans
 1970 Cutlass Supremes with Engine L31 746 Holiday Coupes & Convertibles
 1970 Cutlass Supremes with Engine W32 852 Holiday Coupes & Convertibles
 1970 Other Cutlass Models with L33 916

The preceding summary shows that there were 8,322 Cutlass Supremes built with 455s (L33+L31+W32) but only 7,122 were SXs.  That indicates that there were 1,200 Cutlass Supremes built with 455s (L33s) but did not have the cutouts in the rear bumper, exhaust trumpets, or the SX badge on the front fenders (option Y79).

 

Note:  Option L33 was available until February 24, 1970 – and was replaced with the L31 effective February 25, 1970.  Concurrently, the L31 was not available with the Holiday Sedan or the Cutlass S. 


PREVIOUS PRODUCTION NUMBERS
PRIOR TO  NOVEMBER 2016

Year

Hardtops
(style 4257)

Convertibles
(style 4267)

Total for
Both Styles

1970*

6,404

793

7,197

1971

1,820

357

2,177

Total for
Both Years

8,224

1,150

9,374


*There is no reliable data for the number of 1970 Cutlass SX cars produced
with each of the three available engines options for 1970 (L-31, L-33, W32).

Previously published figures claimed 1,025
W-32 cars built,
but an April, 2010 finding from the GM Heritage Center prove 862 W-32s
were produced for the first 11 months of the 1970 production year.

To determine if your car is a Cutlass SX,  join the SX455 Club.
Then check out the member only sections of this web site, including:
Spotter Tips, Tech & Spec, & Articles, Docs, etc. 
sections of the SX455.com web site


Sign Up to Gain Access