1990 Camaro Engine Tune-Up Specifications

1990 Engine Tune-Up Specifications


RPO
(Engine Code)

Cyls-CID (Liters)

Spark Plug
Type
(1)

Spark Plug Gap (Inch) Ignition Timing Fuel Pressure (psi) face="Arial" size="1">(2)

Idle Speed face="Arial" size="1">(3)

MT AT MT AT
LO3 (E)

8-305 (5.0L)

R45TS 0.035 0 0 9-13 (4) (4)
LB9 (F)

8-305 (5.0L)

R45TS 0.035 6B 6B 40-47 (4) (4)
B2L/L98 (8)

8-350 (5.7L)

R45TS 0.035 6B* 6B 40-47 (4)* (4)

Firing Order: 1-8-4-3-6-5-7-2

NOTE: Under hood sticker figures must be used if
different from this chart.

(1) AC Delco noted or
equivalent
(2) Key on, engine off.  
(3) Or Minimum Air; RPM w/ engine
in Neutral (MT) or Park (AT) warmed to operating temperature; follow proper procedures in
setting.
(4) See underhood emission decal for specification.

*Manual Transmission not publically available with B2L/L98
5.7L Engine, but tune-up specifications noted for this setup regardless.

MT=Manual Transmission; AT=Automatic Transmission; psi=Pounds
per Square Inch

To select another year or component, simply reselect your
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