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W31 numbers
1970 W31
1968 W31 Option
1968 was the first year
for W31 option. Items to look for:
Special 350 Engine.
Gold color, Forced air system, dual snorkel air cleaner, scoops under front
bumper, number 5 cast on cylinder heads, same as standard 350 but W31 has 455
valves (larger than stock 350). Manual brakes only. Letter M for
Lansing in vin. All were 3 speed or 4 speed, no automatic transmission. Small
crossed piston decal with the word Ram on one, and Rod on the other. 350
on bottom. 4 core heavy duty radiator. Special high speed harmonic
balancer, thicker and heavier than standard 350. Black plastic fender
wells, with holes for forced air system. 308 degree camshaft makes for a
rougher idle than standard 350.
1968 Production numbers
3277 F85 Club
Coupe
38
3600
Cutlass
674
4287 Cutlass Supreme HT
Coupe 30
Total
742
1969 W31 Option
Special 350 Engine as
1968, Forced air system, dual snorkel air cleaner, scoops under bumper. Number
5 cast on cylinder head, 455 valves, manual brakes only, M for Lansing in
VIN, standard trans or automatic special M38 turbo 350. Simple W31 decal
above front fender marker light. Hood has raised blocks painted, 4 core
radiator, special high speed harmonic balancer, black plastic fender wells with
holes cut for forced air system, 308 degree camshaft with lumpy idle, front and
rear stabilizer bars.
1969 W31 Production
numbers.
3277 F85 Club
Coupe
212
3667 Cutlass
Convertible
26
3677 Cutlass Sport
Coupe
106
3687 Cutlass Hardtop
Coupe
569
Total
913
1970 W31 Option
Same special 350 engine
as 1968-69. OAI (outside air induction) hood as the 1970 442 W30 (W25 option). Number 6 on
cylinder head. Manual brakes only. Letter M in VIN for
Lansing. Standard or Automatic transmission. Die cast W31 Emblems.
Same body stripping as W30. High speed heavy duty harmonic balancer as
1968, 1969. W350 raised letters on aluminum manifold. 442 dual exhaust
bumper not standard on W31.
3277 F85 Club
Coupe
207
3677 Cutlass Sport
Coupe
116
3687 Cutlass
Hardtop
1,029
Total
1,352
Copyright 2009 Fusick Automotive Products, Inc, Classic
Oldsmobile, Cutlass, 442, Hurst/Olds, Restoration Parts.
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