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1970 Models: Notes

Code

Displ. & Carb.

Comp. Ratio

⁽¹⁾

250" 6 1-Bbl.

8.5:1

SO

350" V8 2-Bbl.

9.0:1

SB

350" V8 4-Bbl.

9.0:1

SP

350" V8 4-Bbl.

10.25:1

SR

455" V8 4-Bbl.

10.0:1

SS (Stage 1)

455" V8 4-Bbl.

10.5:1

SF

455" V8 4-Bbl.

10.01

⁽¹⁾	6 cylinder engines do not have engine code designation.

Fig 1: 1968-71 BUICK 6 CYLINDER ENGINE NUMBERS

G09340398

Courtesy of GENERAL MOTORS COMPANY

Fig 2: 1968-72 350" V8 ENGINE NUMBERS

G09340399

Courtesy of GENERAL MOTORS COMPANY

Fig 3: 1968-72 400", 430", 455" V8 ENGINE NUMBERS

G09340400

Courtesy of GENERAL MOTORS COMPANY