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ENGINE SPECIFICATIONS
A Buick engine is stamped with two different identification codes. One is the engine production code which identifies the engine and its approximate production date. The other code is the engine serial number - it matches the VIN (vehicle identification number)

EXAMPLE:
F 12 07 SB
0 H 12 3456

Top Row:
  F = Flint
  12 = Month
  07 = Day
  SB = Trans. or Option usage
Bottom Row:
  0 = Year (1970)
  H = Flint
  123456 = Production Code

  • The 250 CID OHV6 engine number and production code are on the right side, to the rear of the distributor.
  • The 350 CID V8 engine number is on the front of the left bank of cylinders. The production code number is between the left exhaust manifold and the two front spark plugs.
  • The 455 CID V8 engine number is between the two front spark plugs and the eshaust manifold. The production code number is between the two rear spark plugs and the left exhaust manifold.

ENGINE
CODE

SA
SB
SF
SO
SP
SR
SS
NO.
CYL.

6
8
8
8
8
8
8
CID
 
250
350
455
350
350
455
455
HORSE
POWER

155
285
370
260
315
350
360
COMP.
RATIO

8.5:1
9.0:1
10.5:1
9.0:1
10.25:1
10.0:1
10.5:1
CARB
 

1BC
4BC
4BC
2BC
4BC
4BC
4BC
Engines available as indicated:
  • Skylark and 350 - SA,SO,SB,SP
  • Sport Wagon and Skylark Custom - SO,SB,SP
  • Skylark GS - SP
  • Skylark GS455 - SR,SS
  • Estate Wagon - SF
  • LeSabre and Custom - SO,SB,SP
  • LeSabre Custom 455 - SF
  • Wildcat Custom - SF
  • Electra 225 and 225 Custom - SF
  • Riviera - SF




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